The National Academies Press

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From page 166... ... 166 A P P E N D I X C Partner Laboratory Survey Responses The responses to the partner laboratory survey questionnaire are presented in this appendix. Current Status of Laboratory Asphalt Performance Testing Question 1: Does your organization prepare specimens and conduct asphalt laboratory performance tests? Read the entire page →
From page 167... ... Partner Laboratory Survey Responses 167 Question 2: Please provide 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.) Read the entire page →
From page 168... ... Question 3: "For the agencies identified in previous question, please provide information regarding the purpose of the performance testing (select all that apply) ." Partner Lab Agency 1 Agency 2 Agency 3 Agency 4 Agency 5 Agency 6 Agency 7 Agency 8 Agency 9 Agency 10 Agency 11 Agency 12 Agency 13 Agency 14 Agency 15 1 P 2 P, Q P, Q Q 3 P 4 Q Q Q Q Q Q Q Q Q Q Q P, Q P, Q Q Q 5 P P P 6 P, Q 7 P 8 P 9 P, Q P, Q P, Q 10 P P Q P 11 P 12 P, Q P, Q P, Q 13 P P P 14 P P P 15 P P P P P P P P P 16 17 P P P P P P P P P P P 18 P P P 19 P, Q Q P, Q 20 P P 21 22 P 23 P 24 P, Q 25 P, Q P P P P P P P P 26 P 27 28 P P 29 P 30 P, Q 31 P 32 P 33 P: Performance testing as part of a research study (or research studies) Read the entire page →
From page 169... ... Partner Laboratory Survey Responses 169 Question 4: "Please select the types of laboratory asphalt performance testing conducted by your organization–select all that apply:" "Other" responses and brief descriptions 7 9 14 13 12 26 13 23 19 17 26 7 7 4 12 18 0 5 10 15 20 25 30 APA Cantabro CTIndex DCT DTCF E* Read the entire page →
From page 170... ... 170 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 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.) Read the entire page →
From page 171... ... Partner Laboratory Survey Responses 171 Fabrication of Asphalt Performance Test Specimens Question 7: "For laboratory performance tests used by your organization, are specimen dimensions as per standard specifications (such as AASHTO or ASTM) Read the entire page →
From page 172... ... 172 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 8: "What are the dimensions of the final test specimen for the laboratory performance tests conducted by your organization on behalf of transportation agencies? (Typical values are shown; please edit as necessary and fill all that apply.) Read the entire page →
From page 173... ... Partner Laboratory Survey Responses 173 Question 10: "Please identify laboratory performance test(s) for which there is a laboratory conditioning requirement (e.g., short- and/or long-term oven aging) Read the entire page →
From page 174... ... 174 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 11: "Please provide information regarding the laboratory conditioning (e.g., short- and/or longterm oven aging) during specimen fabrication for laboratory performance testing (check all that apply) Read the entire page →
From page 175... ... Partner Laboratory Survey Responses 175 Question 12: "Please provide details (such as temperature and time) for the loose mixture laboratory conditioning during specimen fabrication process (fill in all information that is applicable) Read the entire page →
From page 176... ... 176 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Descriptions of "other process followed" for loose mix conditioning: Asphalt Pavement Analyzer (APA) Cantabro We do all loose mix conditioning (both STOA and LTOA) Read the entire page →
From page 177... ... Partner Laboratory Survey Responses 177 Question 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) Read the entire page →
From page 178... ... 178 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 14: "Please provide details (such as temperature and time) for the compacted specimen conditioning during fabrication process (fill in all information that is applicable) Read the entire page →
From page 179... ... Partner Laboratory Survey Responses 179 Descriptions of "other process followed" for compacted specimen conditioning: Asphalt Pavement Analyzer (APA) Cantabro Direct Tension Cyclic Fatigue (SVECD) Read the entire page →
From page 180... ... 180 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 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, please select in first column and leave the rest blank. Read the entire page →
From page 181... ... Partner Laboratory Survey Responses 181 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) 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) Read the entire page →
From page 182... ... 182 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Table continued from previous page. 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) Read the entire page →
From page 183... ... Partner Laboratory Survey Responses 183 "Other" (such as more than one target air void level) responses and descriptions. Read the entire page →
From page 184... ... 184 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 17: "Identify equipment that is used in your laboratory to fabricate test specimens for laboratory performance tests (check all that apply) Read the entire page →
From page 185... ... Partner Laboratory Survey Responses 185 Other equipment identified: Test Other(s) (briefly describe) Read the entire page →
From page 186... ... 186 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Operational Constraints and Rejection Rates of Test Specimens Question 18: "What is the allowable maximum storage time before, during, and after specimen fabrication for the performance tests that are instituted by your organization? Please use the comments column to provide any additional relevant information (fill all that apply; leave blank if no requirements are in place) Read the entire page →
From page 187... ... Test Comments Asphalt Pavement Analyzer Test 30 days if materials are stored inside at room temperature (mainly for field mixtures) Read the entire page →
From page 188... ... Flow Number (RLPD) Test NA 30 days if materials are stored inside at room temperature (mainly for field mixtures) Read the entire page →
From page 189... ... Direct Tension Cyclic Fatigue Test (SVECD) NA SmallScale Geometry Dynamic (Complex) Read the entire page →
From page 190... ... 190 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 19: "How are performance test specimens prepared for storage at your organization? (Select all that apply.) Read the entire page →
From page 191... ... Partner Laboratory Survey Responses 191 Question 20: "Please indicate the most frequent causes of operational disruptions that you have encountered during the test specimen fabrication process (check all that apply) Read the entire page →
From page 192... ... 192 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories "Other" responses: Solid-state relays going bad in ovens, compressors going bad, nothing related to specimens. There is a lot more to this discussion than presented here. Read the entire page →
From page 193... ... Partner Laboratory Survey Responses 193 Typical specimen rejection rates reported: Typical specimen rejection rate: (%) 20 to 30% due to % air void rejection 5 25 Changes depending on the quantity in one production, experience of students, type of asphalt mixture, test method, etc. Read the entire page →
From page 194... ... 194 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 22: "Is your organization satisfied with your performance test specimen rejection rate? (Select one and fill in the blank.) Read the entire page →
From page 195... ... Partner Laboratory Survey Responses 195 Suggestions for Future Research Question 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? Read the entire page →
From page 196... ... 196 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories Question 24: "The synthesis will also include case examples illustrating practices on asphalt performance-test specimen fabrication. The development of the case example(s) Read the entire page →

From page 166...

... 166 A P P E N D I X C Partner Laboratory Survey Responses The responses to the partner laboratory survey questionnaire are presented in this appendix. Current Status of Laboratory Asphalt Performance Testing Question 1: Does your organization prepare specimens and conduct asphalt laboratory performance tests?