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68 A P P E N D I X A Agency and Partner Laboratory Survey Questionnaires NCHRP Synthesis Topic 50-14 Agency Survey Dear AASHTO Committee on Materials and Pavements member: The Transportation Research Board (TRB) is preparing a synthesis titled âPractices for Fabricating Asphalt Specimens for Performance Testing in Laboratories.â This is being done for the National Cooperative Highway Research Program (NCHRP), under the sponsorship of the American Association of State Highway and Transportation Officials (AASHTO), in cooperation with the Federal Highway Administration (FHWA). This survey is the key component of the Synthesis 50- 14 project and is intended to identify the current state of the practice in state and provincial transportation agencies with respect to fabrication of asphalt-mixture specimens that are used in laboratory performance tests. Your cooperation in completing the questionnaire will ensure the success of this effort. If you are not the appropriate person in your agency to complete this survey, please forward the survey link to the person in your agency who leads the efforts related to laboratory performance testing of asphalt mixtures. Please complete and submit this survey by March 2, 2019. We estimate that it should take approximately 15-20 minutes to complete. If you are unsure about a question, please provide information to the best of your knowledge. Please leave responses blank for questions where information may not be readily available. If you have any questions about this survey, please contact the project principal investigator, Dr. Jo E. Sias, at (603) 862-3277 or jo.sias@unh.edu. The individual names of the respondents are anonymous, but not the agencyâs responses. Thank you for your time and expertise! SURVEY INSTRUCTIONS To view, download and print the entire survey, click on the following link: https://unh.box.com/shared/static/qi96q6tsl5zehrffg6qsj4cw4uioz5ok.pdf
Agency and Partner Laboratory Survey Questionnaires 69 email to your colleague. They will be able to open the partially filled survey using the same link (If you prefer to review all responses before submission of survey, please make sure to let them know that they should not submit the survey. Once submitted, you will not be able to access it.) On conclusion of the survey, you will be able to download your responses in a PDF format. Simply click on "Download PDF" link to download your survey responses. Identification of contact information Name (first, last): ________________________________________________ Agency: ________________________________________________ Position/Title: ________________________________________________ Telephone: ________________________________________________ Email: ________________________________________________ DEFINITIONS The following definitions are used to clarify the scope in this questionnaire: Asphalt Mixtures: For the purposes of this survey, the term âasphalt mixturesâ is intended to represent any dense-graded hot-mix asphalt (HMA) or warm-mix asphalt (WMA) or stone matrix asphalt (SMA) mixture that is made in the laboratory or produced at the plant. This term To save your partial answers and complete the questionnaire later, just close the survey window. Survey responses are saved in real time and you will be able to open the survey again from your email. Please note that when you reach the end of survey and click next, the survey will be submitted and you will no longer be able to access it or change your responses. To return to the questionnaire later, open the original email for the survey and click on the link that you used originally to initiate the survey. To pass a partially completed questionnaire to a colleague, simply close the survey and forward the original survey
70 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Laboratory Asphalt-Mixture Performance Tests: For purposes of this survey, laboratory asphalt- mixture performance tests are defined as any laboratory test procedure for mechanical characterization of asphalt mixtures to determine a fundamental engineering or empirical property (e.g., resilient modulus, creep properties, and fatigue properties) that can predict pavement performance and/or appear in primary performance prediction relationships (i.e., models that can be used to predict pavement stress, distress, or performance from combinations of predictors that represent traffic, environmental, roadbed, and structural conditions). Pavement performance in this definition is in context of asphalt-mixture durability and resistance to traffic- and climate-induced distresses. Specimen Fabrication for Performance Testing: Specimen fabrication for this survey is defined as the comprehensive process by which loose asphalt mixture (made in laboratory or sampled from plant) is made into the finalized test specimen that is ready for mechanical characterization. The steps for fabrication include, but are not limited to, reheating, compaction, conditioning (e.g., laboratory aging or moisture), cutting, coring, air void determination, and gluing of loading platens or gage brackets. Please click here to indicate that you have reviewed the above shown definitions. Block-1: The questions in this section are used to determine the current status of laboratory asphalt performance testing at your agency. 1) Does your agency prepare and conduct asphalt laboratory performance testing (irrespective of whether testing is conducted on a routine or supplemental basis, i.e., not part of routine usage/specification/mix acceptance)? Yes (either in-house at agency and/or through consultant or university labs) No includes mixtures which have been modified with the use of recycled materials (e.g., reclaimed asphalt pavement, reclaimed asphalt shingles, crumb rubber from recycled tires, etc.). This term does not include maintenance mixtures (e.g., cold mix asphalt, seal coats, etc.), in-place recycled mixtures (e.g., hot-in-place recycled asphalt, cold-in-place recycled asphalt, etc.) or specialized surface mixtures (e.g., open-grade friction course or gap-graded thin bonded overlays).
Agency and Partner Laboratory Survey Questionnaires 71 2) Please select the types of laboratory asphalt performance testing conducted by your agency (in-house and/or by other entities on behalf of your agency)âselect all that apply. Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1: (briefly describe) ________________________________________________ Other test 2: (briefly describe) ________________________________________________
72 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 3) How does your Agency use the results of the laboratory performance test (select all that apply)? Mix Design Acceptance In Quality Assurance (QA) Process Nonroutine Usage for Research or Other Purposes Other Routine Usage for Research Purposes (such as specification updates) For Mix Acceptance For Pay Factor Adjustment Other Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S- VECD) (AASHTO TP107) Disk- Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378)
Agency and Partner Laboratory Survey Questionnaires 73 Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi- Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F)
74 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Other test 1 (briefly describe): Other test 2 (briefly describe): 4) At your agency, is the fabrication of test specimens for performance testing conducted using standardized AASHTO or ASTM specifications and/or agency-specific protocols? (Provide one response for each test.) Standardized Procedures (AASHTO or ASTM specifications) Standardized Procedure with Some Agency- Recommended Modifications (AASHTO or ASTM specifications with some agency-specific modifications) Other (nonstandardized procedure, such as entirely in-house protocol) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test
Agency and Partner Laboratory Survey Questionnaires 75 Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 5) If you have a document describing agency-specific procedures for fabricating specimens for laboratory performance tests, either (1) upload documents: FILE UPLOAD (please rename files to include agency name) or (2) please paste a link to agency website where documents can be found. Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test ________________________________________________ Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321)
76 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) __ CTIndex Test ________________________________________________ Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) ________________________________________________ Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test ________________ Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): ________________________________________________ Other test 2 (briefly describe): ________________________________________________ 6) Is asphalt laboratory performance testing conducted at your agency and/or by consultant/university labs on behalf of the agency? Conducted only in-house by agency Conducted only through consultant/university labs Conducted both in-house and through consultant/university labs
Agency and Partner Laboratory Survey Questionnaires 77 7) Important component of this synthesis study is to document specimen fabrication practices of non-agency entities (such as consultant or university labs) that conduct performance testing on behalf of agencies. Please share the name of entities that conduct laboratory performance testing for your agency and provide an email address for sending the survey. Entity Name Email Address for Sending Survey 1. 2. 3. 4. 5. Block-2: The questions in this section relate to the process involved in fabrication of asphalt performance test specimens. Details regarding compaction, cutting and coring, age conditioning, etc., will be gathered in this section. A list of required equipment to fabricate specimens will also be collected. 8) For laboratory performance tests used by your agency, are specimen dimensions as per standard specifications (such as AASHTO or ASTM)? (Select "No" if non-standard dimensions are used for even a single performance test used by your agency.) Yes No
78 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 9) What are the dimensions of the final test specimen for the laboratory performance tests used by your agency? (Typical values are shown; please edit as necessary and fill all that apply.) Thickness Diameter (if applicable) Length (if applicable) Width (if applicable) If there are any additional features about the test specimen (e.g., flat faces or semi-circular shape), please describe them and share the dimensions used Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313)
Agency and Partner Laboratory Survey Questionnaires 79 Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale
80 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 10) What type(s) of materials are evaluated using laboratory performance test(s) by your agency (check all that apply)? Lab Mixed, Lab Compacted Plant Mixed and Field Compacted, or Field Cores Reheated Plant Mixed Lab Compacted or Plant Mixed Lab Compacted at the Plant Other Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107)
Agency and Partner Laboratory Survey Questionnaires 81 Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test
82 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 11) Please identify laboratory performance test(s) for which there is a laboratory conditioning requirement (for example, short- and/or long-term oven aging) as part of specimen fabrication process for your agency (select all that apply). Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044)
Agency and Partner Laboratory Survey Questionnaires 83 Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 12) Please provide information regarding the laboratory conditioning (for example, short- and/or long-term oven aging) during specimen fabrication for laboratory performance testing (check all that apply). Laboratory Oven Aging Other (briefly describe) Loose Mix Compacted Sample Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324)
84 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 13) Please provide details (such as temperature and time) for the loose mixture laboratory conditioning during specimen fabrication process (fill all that is applicable). Conditioned as per AASHTO R30 Short-Term Aging Protocol Other Process Followed (briefly describe) Non-AASHTO R30 Protocol Used: Aging Temperature and Aging Time Deg. Celsius Minutes Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test
Agency and Partner Laboratory Survey Questionnaires 85 Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test
86 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 14) Is laboratory conditioning of compacted specimens conducted on bulk (prior to cutting and coring) specimens or on finished test specimens (after cutting and coring) (select one)? Lab Conditioning on Bulk Specimen (prior to cutting and/or coring) Lab Conditioning on Finished Test Specimen (after cutting and/or coring to get to final test specimen geometry) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test ⢠â¢
Agency and Partner Laboratory Survey Questionnaires 87 Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 15) Please provide details (such as temperature and time) for the compacted specimen conditioning during fabrication process (fill all that is applicable): Conditioned as per AASHTO R30 Long-Term Aging Protocol Non-AASHTO R30 Protocol Used: Aging Temperature and Aging Time Other Process Followed (briefly describe) Degree Celsius Time Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342)
88 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
Agency and Partner Laboratory Survey Questionnaires 89 16) Is there a target air void level requirement for laboratory performance test specimens used by your agency? (Select one for each test.) Yes No Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
90 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 17) Please provide information regarding the target air void level requirement during fabrication of laboratory performance test specimens used by your agency or on behalf of your agency. (If requirements are in the AASHTO/ASTM specification, please select in first column and leave rest blank. Fill all that apply, leave blank if no requirements are in place.) Requirements Not Detailed in Test Specification or Deviated from Test Specification: Target Air Void Required on Bulk Compacted Sample Prior to Test Specimen Fabrication (e.g., prior to cutting or coring) Other (such as more than one target air void level; please briefly describe) Requirements Not Detailed in Test Specification or Deviated from Test Specification: Target Air Void Required on Finalized Test Specimen (e.g., after all necessary cutting or coring) Target Air Void Requirement as per AASHTO/ASTM Specification for the Performance Test Target Air Void Level (%) Allowed Variation (+/- %) Target Air Void Level (%) Allowed Variation (+/- %) Requirements as per Specification Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S- VECD) (AASHTO TP107) Disk- Shaped Compact Tension (DCT) Test (ASTM D7313)
Agency and Partner Laboratory Survey Questionnaires 91 Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi- Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small- Scale Geometry Direct Tension Cyclic
92 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Test (S- VECD) Small- Scale Geometry Dynamic (Complex) Modulus Test Small- Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248- F) Other test 1 (briefly describe): Other test 2 (briefly describe): Fatigue
18) Identify equipment that is used in your laboratory to fabricate test specimens for laboratory performance tests (check all that apply): Lab Equipment (select all that apply) Other(s) (briefly describe) M ix Splitter (e.g., quarterm aster) Superpave G yratory C om pactor O ven(s) R otary Saw (s) C oring D rill C ore D rying D evice G luing Tem plates (e.g.,tem plate for m arking location of gage points or to attach gage points) G luing Jigs (e.g., specim en holding devices to glue loading platens to test specim en) Tem perature C onditioning C ham ber(s) Vacuum Bag Sealing D evices (such as C oreLok) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313)
Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
Agency and Partner Laboratory Survey Questionnaires 95 Block-3: The questions in this section relate to the operational constraints (such as storage times) and rejection rates of test specimens. 19) What are the allowable maximum storage times before, during, and after specimen fabrication for the performance tests that are instituted in your agency? Please use comments column to provide any additional relevant information (fill all that apply, leave blank if no requirements are in place). Between Loose Mix Sampling and Laboratory Compaction Between Preparation of Compacted (bulk) Specimen and Finalized Test Specimen Between Finalized Test Specimen Fabrication and Mechanical Testing Between Repeated Mechanical Testing (if multiple tests are conducted on same specimens) Comments Maximum Allowable Time (days) Maximum Allowable Time (days) Maximum Allowable Time (days) Maximum Allowable Time (days) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313)
96 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale
Agency and Partner Laboratory Survey Questionnaires 97 Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 20) How are performance test specimens prepared for storage at your agency (select all that apply)? Preparation Prior to Storage Other (briefly describe) No Preparation Wrapped in Plastic Film Vacuum Sealed Coated in Wax Left in Airtight Container Between loose mix sampling and laboratory compaction Between preparation of compacted (bulk) specimen and finalized test specimen
98 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Between finalized test specimen fabrication and mechanical testing Between repeated mechanical testing (if multiple tests are conducted on same specimens) 21) Please indicate the most frequent causes of operational disruptions that you have encountered during the test specimen fabrication process (check all that apply). Not meeting dimensional requirements for bulk specimen (prior to cutting and/or coring) Not meeting dimensional requirements for prepared (after cutting and/or coring) test specimens Not meeting air void requirements for bulk specimen (prior to cutting and/or coring) Not meeting air void requirements for prepared (after cutting and/or coring) test specimens Exceeding shelf storage times Not meeting temperature tolerance requirements for laboratory conditioning Laboratory ambient conditions (e.g., excessive humidity) Challenges with operator training/skill levels
Agency and Partner Laboratory Survey Questionnaires 99 Specimen fabrication equipment problems (e.g., problems with saws or jigs) Others (please describe) ________________________________________________ 22) In your experience, what has been the rejection rate of test specimens (i.e., specimens that are not used for testing), due to the fabrication process (e.g., longer shelf storage than allowed, out-of-tolerance dimensions, wrong air void content, etc.) (select one and fill in the blank)? Typical specimen rejection rate: (%) Rejection rate of specimens not observed 23) Is your agency satisfied with your performance test specimen rejection rate (select one and fill in the blank)? Yes No: What rejection rate (%) would you consider as acceptable/satisfactory? ________________________________________________ Block-4: Identification of Other Contacts and Suggestions for Future Research 24) Is your Agency currently sponsoring (or planning to sponsor) any research related to asphalt performance testing that specifically addresses the fabrication of laboratory specimens in-house in the future? Yes (please describe) ________________________________________________ No 25) Have you observed any gaps in knowledge that have made it challenging for your Agency to start (or continue) successfully fabricating performance test specimens in-house? Yes (please describe) ________________________________________________ No
100 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 26) The synthesis will also include case examples illustrating agency practices on asphalt performance test specimen fabrication. The development of the case example(s) may require an additional follow-up interview. Agencies will be provided the opportunity to review the case example write-up for accuracy. Would your agency be interested in participating in a case example? Yes No 27) If you have any additional information or thoughts you would like to share regarding this topic, please share them here: ________________________________________________________________ END OF SURVEY Please click on "Submit Survey!" button to submit your survey. NOTE: By clicking "Submit Survey!" button here you will end the survey and you will be unable to go back and review or revise your responses. Thank you for your willingness to participate in this NCHRP Synthesis 50-14! While names of survey respondents will be kept anonymous, agency responses will be identified in the reports. If you need any additional information about this survey or about the project, please contact Dr. Jo E. Sias (jo.sias@unh.edu).
Agency and Partner Laboratory Survey Questionnaires 101 NCHRP Synthesis Topic 50-14 Partner Laboratory Survey Dear Colleague: The Transportation Research Board (TRB) is preparing a synthesis titled âPractices for Fabricating Asphalt Specimens for Performance Testing in Laboratories.â This is being done for the National Cooperative Highway Research Program (NCHRP), under the sponsorship of the American Association of State Highway and Transportation Officials (AASHTO), in cooperation with the Federal Highway Administration (FHWA). A State Transportation Agency identified you as a contact person that conducts asphalt laboratory performance tests on behalf of the agency. This survey is the key component of the Synthesis 50-14 project and is intended to identify the current state of the practice with respect to fabrication of asphalt-mixture specimens that are used in laboratory performance tests. Your cooperation in completing the questionnaire will ensure the success of this effort. If you are not the appropriate person in your organization to complete this survey, please forward the survey link to the person in your agency who leads the efforts related to laboratory performance testing of asphalt mixtures. Please complete and submit this survey by March 2, 2019. We estimate that it should take approximately 15-20 minutes to complete. If you are unsure about a question, please provide information to the best of your knowledge. Please leave responses blank for questions where information may not be readily available. If you have any questions about this survey, please contact the project principal investigator, Dr. Jo E. Sias, at (603) 862-3277 or jo.sias@unh.edu The individual names of the respondents will be kept anonymous. Thank you for your time and expertise! SURVEY INSTRUCTIONS To view, download and print the entire survey, Click on the following link: https://unh.box.com/shared/static/rafgoun51t7mkbggm24gqu6e9z06lpjx.pdf To save your partial answers and complete the questionnaire later, just close the survey window. Survey responses are saved in real time and you will be able to open the survey again from your email. Please note that when you reach the end of survey and click next, the survey will be submitted and you will no longer be able to access it or change your responses. To return to the questionnaire later, open the original email for the survey and click on the link that you used originally to initiate the survey. To pass a partially completed
102 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories questionnaire to a colleague, simply close the survey and forward the original survey email to your colleague. They will be able to open the partially filled survey using the same link. (If you prefer to review all responses before submission of survey, please make sure to let them know that they should not submit the survey. Once submitted, you will not be able to access it.) On conclusion of the survey, you will be able to download your responses in a PDF format. Simply click on âDownload PDFâ link to download your survey responses. Identification of contact information Name (first, last): ________________________________________________ Organization: ________________________________________________ Position/Title: ________________________________________________ Telephone: ________________________________________________ Email: ________________________________________________ DEFINITIONS The following definitions are used to clarify the scope in this questionnaire: Asphalt Mixtures: For the purposes of this survey, the term âasphalt mixturesâ is intended to represent any dense-graded hot-mix asphalt (HMA), warm-mix asphalt (WMA), or stone matrix asphalt (SMA) mixture that is made in the laboratory or produced at the plant. This term includes mixtures which have been modified with the use of recycled materials (e.g., reclaimed asphalt pavement, reclaimed asphalt shingles, crumb rubber from recycled tires, etc.).This term does not include maintenance mixtures (e.g., cold mix asphalt, seal coats, etc.), in-place recycled mixtures (e.g., hot-in-place recycled asphalt, cold-in-place recycled asphalt, etc.) or specialized surface mixtures (e.g., open-grade friction course or gap-graded thin bonded overlays).
Agency and Partner Laboratory Survey Questionnaires 103 Laboratory Asphalt-Mixture Performance Tests: For purposes of this survey, laboratory asphalt- mixture performance tests are defined as any laboratory test procedure for mechanical characterization of asphalt mixtures to determine a fundamental, engineering or empirical property (e.g., resilient modulus, creep properties, and fatigue properties) that can predict pavement performance and/or appear in primary performance prediction relationships (i.e., models that can be used to predict pavement stress, distress, or performance from combinations of predictors that represent traffic, environmental, roadbed, and structural conditions). Pavement performance in this definition is in context of asphalt-mixture durability and resistance to traffic- and climate-induced distresses. Specimen Fabrication for Performance Testing: Specimen fabrication for this survey is defined as the comprehensive process by which loose asphalt mixture (made in laboratory or sampled from plant) is made into the finalized test specimen that is ready for mechanical characterization. The steps for fabrication include, but are not limited to, reheating, compaction, conditioning (e.g., laboratory aging or moisture), cutting, coring, air void determination, and gluing of loading platens or gage brackets. Please click here to indicate that you have reviewed the above-shown definitions. Block-1: The questions in this section are used to determine the current status of laboratory asphalt performance testing at your organization. 1) Does your organization prepare specimens and conduct asphalt laboratory performance tests? Yes No 2) Please provide a list of transportation agencies that contract asphalt laboratory performance testing to your organization (if more than 15, please provide list of most recent 15 agencies that have contracted with your organization for asphalt laboratory performance testing). Agency 1 ________________________________________________ Agency 2 ________________________________________________ Agency 3 ________________________________________________
104 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Agency 4 ________________________________________________ Agency 5 ________________________________________________ Agency 6 ________________________________________________ Agency 7 ________________________________________________ Agency 8 ________________________________________________ Agency 9 ________________________________________________ Agency 10 ________________________________________________ Agency 11 ________________________________________________ Agency 12 ________________________________________________ Agency 13 ________________________________________________ Agency 14 ________________________________________________ Agency 15 ________________________________________________ 3) For agencies identified in the previous question, please provide information regarding the purpose of performance testingâselect all that apply. Test Required as Part of Mix Design, Mix Acceptance, QA Process or Pay Factor Adjustment (select if any of these conditions apply) Performance Testing as Part of a Research Study (or research studies) Agency 1 Agency 2 Agency 3 Agency 4
Agency and Partner Laboratory Survey Questionnaires 105 Agency 5 Agency 6 Agency 7 Agency 8 Agency 9 Agency 10 Agency 11 Agency 12 Agency 13 Agency 14 Agency 15 4) Please select the types of laboratory asphalt performance testing conducted by your organizationâselect all that apply. Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321)
106 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): ________________________________________________ Other test 2 (briefly describe): ________________________________________________ 5) At your organization, is the fabrication of test specimens for performance testing conducted using standardized AASHTO or ASTM specifications and/or agency specific protocols (provide one response for each test)? Standardized Procedures (AASHTO or ASTM specifications) Standardized Procedure with Some Agency- Recommended Modifications (AASHTO or ASTM specifications with some agency-specific modifications) Other (nonstandardized procedure, such as entirely in-house protocol) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test
Agency and Partner Laboratory Survey Questionnaires 107 Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
108 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 6) If you have a document describing organization-specific procedures for fabricating specimens for laboratory performance tests, either (1) upload documents: FILE UPLOAD (please rename files to include organization name) or (2) please paste a link to a website where documents can be found. Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test ________________________________________________ Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test ________________________________________________ Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) ________________________________________________ Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) ________________________________ Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): ________________________________________________ Other test 2 (briefly describe): ________________________________________________
Agency and Partner Laboratory Survey Questionnaires 109 Block-2: The questions in this section relate to the process involved in fabrication of asphalt performance test specimens. Details regarding compaction, cutting and coring, age conditioning, etc., will be gathered in this section. A list of required equipment to fabricate specimens will also be collected. 7) For laboratory performance tests conducted by your organization, are specimen dimensions as per standard specifications (such as AASHTO or ASTM)? (Select "No" if non-standard dimensions are used for any performance tests that are conducted on behalf of an agency.) Yes No 8) What are the dimensions of the final test specimen for the laboratory performance tests conducted by your organization on behalf of state transportation agencies? (Typical values are shown; please edit as necessary and fill all that apply.) Thickness Diameter (if applicable) Length (if applicable) Width (if applicable) If There Are Any Additional Features About the Test Specimen (e.g., flat faces or semi-circular shape; please describe them and share the dimensions used) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test
110 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044)
Agency and Partner Laboratory Survey Questionnaires 111 Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 9) What type(s) of materials are evaluated using laboratory performance test(s) by your organization on behalf of state transportation agencies (check all that apply)? Lab Mixed, Lab Compacted Plant Mixed and Field Compacted, or Field Cores Reheated Plant Mixed Lab Compacted or Plant Mixed Lab Compacted at the Plant Other Asphalt Pavement Analyzer Test (AASHTO T340)
112 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test
Agency and Partner Laboratory Survey Questionnaires 113 Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 10) Please identify laboratory performance test(s) for which there is a laboratory conditioning requirement (for example, short- and/or long-term oven aging) as part of specimen fabrication process (select all that apply). Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324)
114 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 11) Please provide information regarding the laboratory conditioning (for example, short- and/or long-term oven aging) during specimen fabrication for laboratory performance testing (check all that apply). Laboratory Oven Aging Other (briefly describe) Loose Mix Compacted Sample Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313)
Agency and Partner Laboratory Survey Questionnaires 115 Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321)
116 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 12) Please provide details (such as temperature and time) for the loose mixture laboratory conditioning during specimen fabrication process (fill all that is applicable). Conditioned as per AASHTO R30 Short-Term Aging Protocol Other Process Followed (briefly describe) Non-AASHTO R30 Protocol Used: Aging Temperature and Aging Time Deg. Celsius Minutes Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044)
Agency and Partner Laboratory Survey Questionnaires 117 Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
118 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 13) Is laboratory conditioning of compacted specimens conducted on bulk (prior to cutting and coring) specimens or on finished test specimens (after cutting and coring) (select one)? Lab Conditioning on Bulk Specimen (prior to cutting and/or coring) Lab Conditioning on Finished Test Specimen (after cutting and/or coring to get to final test specimen geometry) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test
Agency and Partner Laboratory Survey Questionnaires 119 Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 14) Please provide details (such as temperature and time) for the compacted specimen conditioning during fabrication process (fill all that is applicable). Conditioned as per AASHTO R30 Long-Term Aging Protocol Non-AASHTO R30 Protocol Used: Aging Temperature and Aging Time Other Process Followed (briefly describe) Degree Celsius Time Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378)
120 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
Agency and Partner Laboratory Survey Questionnaires 121 15) Is there a target air void level requirement for laboratory performance test specimens used by your organization (select one for each test)? Yes No Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313) Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S- VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
122 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 16) Please provide information regarding the target air void level requirement during fabrication of laboratory performance test specimens. (If requirements are in the AASHTO/ASTM specification for the laboratory performance test, please select in first column and leave the rest blank. Fill all that apply; leave blank if no requirements are in place.) Requirements Not Detailed in Test Specification or Deviated from Test Specification: Target Air Void Required on Bulk Compacted Sample Prior to Test Specimen Fabrication (e.g., prior to cutting or coring) Other (such as more than one target air void level; please briefly describe) Requirements Not Detailed in Test Specification or Deviated from Test Specification: Target Air Void Required on Finalized Test Specimen (e.g., after all necessary cutting or coring) Target Air Void Requirement as per AASHTO/ASTM Specification for the Performance Test Target Air Void Level (%) Allowed Variation (+/- %) Target Air Void Level (%) Allowed Variation (+/- %) Requirements as per Specification Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S- VECD) (AASHTO TP107) Disk- Shaped Compact Tension (DCT) Test (ASTM D7313)
Agency and Partner Laboratory Survey Questionnaires 123 Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi- Circular Bend (SCB) Test (any version, I- FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small- Scale Geometry Direct Tension Cyclic
124 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Test (S- VECD) Small- Scale Geometry Dynamic (Complex) Modulus Test Small- Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248- F) Other test 1 (briefly describe): Other test 2 (briefly describe): Fatigue
17) Identify equipment that is used in your laboratory to fabricate test specimens for laboratory performance tests (check all that apply). Lab Equipment (select all that apply) Other(s) (briefly describe) M ix Splitter (e.g.,quarterm aster) Superpave G yratory C om pactor O ven(s) R otary Saw (s) C oring D rill C ore D rying D evice G luing Tem plates (e.g.,tem plate for m arking location of gage points or to attach gage points) G luing Jigs (e.g.,specim en holding devices to glue loading platens to test specim en) Tem perature C onditioning C ham ber(s) Vacuum Bag Sealing D evices (such as C oreLok) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313)
Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test Small-Scale Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX-248-F) Other test 1 (briefly describe): Other test 2 (briefly describe):
Agency and Partner Laboratory Survey Questionnaires 127 Block-3: The questions in this section relate to the operational constraints (such as storage times) and rejection rates of test specimens. 18) What are the allowable maximum storage times before, during, and after specimen fabrication for the performance tests that are instituted in your organization? Please use comments column to provide any additional relevant information (fill all that apply, leave blank if no requirements are in place). Between Loose Mix Sampling and Laboratory Compaction Between Preparation of Compacted (bulk) Specimen and Finalized Test Specimen Between Finalized Test Specimen Fabrication and Mechanical Testing Between Repeated Mechanical Testing (if multiple tests are conducted on same specimens) Comments Maximum Allowable Time (days) Maximum Allowable Time (days) Maximum Allowable Time (days) Maximum Allowable Time (days) Asphalt Pavement Analyzer Test (AASHTO T340) Cantabro Test Direct Tension Cyclic Fatigue Test (S-VECD) (AASHTO TP107) Disk-Shaped Compact Tension (DCT) Test (ASTM D7313)
128 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Dynamic (Complex) Modulus Testing (AASHTO T342) Flexural Beam Fatigue Test (AASHTO T321) Flow Number (RLPD) Test (AASHTO T378) Hamburg Wheel Tracking Test (AASHTO T324) CTIndex Test Semi-Circular Bend (SCB) Test (any version, I-FIT, LTRC, Minnesota) (AASHTO TP105 or TP124 or ASTM D8044) Small-Scale Geometry Direct Tension Cyclic Fatigue Test (S-VECD) Small-Scale Geometry Dynamic (Complex) Modulus Test
Agency and Partner Laboratory Survey Questionnaires 129 Geometry Flow Number (RLPD) Test Superpave Indirect Tensile Strength and Creep Test (AASHTO T322) Texas Overlay Test (TxDOT TEX- 248-F) Other test 1 (briefly describe): Other test 2 (briefly describe): 19) How are performance test specimens prepared for storage at your organization? (select all that apply) Preparation Prior to Storage Other (briefly describe) No preparation Wrapped in Plastic Film Vacuum Sealed Coated in Wax Left in Airtight Container Between loose mix sampling and laboratory compaction Between preparation of compacted (bulk) specimen and finalized test specimen Small-Scale
130 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Between finalized test specimen fabrication and mechanical testing Between repeated mechanical testing (if multiple tests are conducted on same specimens) 20) Please indicate the most frequent causes of operational disruptions that you have encountered during the test specimen fabrication process (check all that apply)? Not meeting dimensional requirements for bulk specimen (prior to cutting and/or coring) Not meeting dimensional requirements for prepared (after cutting and/or coring) test specimens Not meeting air void requirements for bulk specimen (prior to cutting and/or coring) Not meeting air void requirements for prepared (after cutting and/or coring) test specimens Exceeding shelf storage times Not meeting temperature tolerance requirements for laboratory conditioning Laboratory ambient conditions (e.g., excessive humidity) Challenges with operator training/skill levels
Agency and Partner Laboratory Survey Questionnaires 131 Specimen fabrication equipment problems (e.g., problems with saws or jigs) Others (please describe) ________________________________________________ 21) In your experience, what has been the rejection rate of test specimens (i.e., specimens that are not used for testing) due to the fabrication process (e.g., longer shelf storage than allowed, out-of-tolerance dimensions, wrong air void content, etc.)? (Select one and fill in the blank.) Typical specimen rejection rate: (%) ________________________________________________ Rejection rate of specimens not observed 22) Is your organization satisfied with your performance test specimen rejection rate? (Select one and fill in the blank.) Yes No: What rejection rate (%) would you consider as acceptable/satisfactory? ________________________________________________ Block-4: Suggestions for Future Research 23) Have you observed any gaps in knowledge that have made it challenging for your organization to start (or continue) successfully fabricating performance test specimens in- house? Yes (please describe) ________________________________________________ No 24) The synthesis will also include case examples illustrating practices on asphalt performance test specimen fabrication. The development of the case example(s) may require an additional follow-up interview. Organizations will be provided the opportunity to review the case example write-up for accuracy. Would your organization be interested in participating in a case example? Yes No
132 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories 25) If you have any additional information or thoughts you would like to share regarding this topic, please share them here: ________________________________________________________________ END OF SURVEY Please click on "Submit Survey!" button to submit your survey. NOTE: By clicking "Submit Survey!" button here you will end the survey and you will be unable to go back and review or revise your responses. Thank you for your willingness to participate in this NCHRP Synthesis 50-14! Names of survey respondents will be kept anonymous. If you need any additional information about this survey or about the project, please contact Dr. Jo E. Sias (jo.sias@unh.edu).
