Portland Cement Concrete Pavement Joint Sealant Practices and Performance (2021)

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82 Questionnaire A P P E N D I X B Dear Agency Representative, The Transportation Research Board (TRB), through the National Cooperative Highway Research Program (NCHRP), under the sponsorship of the American Association of State Highway and Transportation Officials (AASHTO), and in cooperation with the Federal High- way Administration (FHWA) is preparing a synthesis report on Portland Cement Concrete Pavement Joint Sealant Practices and Performance. The purpose of this questionnaire is to document the practice and performance of joint sealant in PCC construction projects. The results of the questionnaire will be incorporated into a synthesis of highway agency practice, with the intent of helping agencies evaluate and improve their current practices for joint sealant. This questionnaire is being sent to each state department of transportation. If you are not the appropriate person at your organization to complete this questionnaire, please forward to the correct person. If your state not using PCC pavements, ignore this survey Please complete and submit this questionnaire within the next 10 working days. We estimate that it should take no more than 30 minutes to complete. It is designed so you can exit and return to the questionnaire if you need to allocate your time over several days. If you have any questions or problems related to this questionnaire, please contact our principal investigator Dr. Dan Zollinger. Questionnaire Tips • If you are unable to complete the questionnaire, you can return to the questionnaire at any time by reentering through the questionnaire link as long as you access the questionnaire through the same computer. Reentering the questionnaire will return you to the last completed question. • Questionnaire navigation is conducted by selecting the “prev” (previous) or “next” button at the bottom of each page. Thank you for your time and expertise in completing this important questionnaire. Guidance This questionnaire is created to gather information on agency requirements and practices on installing and managing joint sealant projects.

Questionnaire 83   Definitions The following definitions are used in conjunction with this questionnaire: • Reservoir – The reservoir (joint well) needed to accommodate the movement of pavement. • Shape factor – The shape factor is the ratio of width to depth of a formed-in-place sealant. The sawcut width, depth and insertion depth of the backer rod define the shape. • NTPEP Data – NTPEP DataMine 3.0 (https://data.ntpep.org/JS/Products) is the online repository of data and audit reports for all NTPEP services. • Minimum joint opening – The initial width of the joint reservoir. • Recess – Most sealants are placed in recessed configurations, where the top of the reservoir is roughly 0.12 to 0.25 inches (3 to 6 mm) below the pavement surface. • Alternative method – Construction related measures to keep the range of joint opening to a minimum by reducing the effects such factor as drying shrinkage. General 1. Are joint sealants used in any New Portland Cement Concrete (PCC) pavement con- struction by your agency? ◽ Yes (Go to Q 2) ◽ No (Go to Q 22) 2. What type of joint sealant does your agency specify (select all that apply)? ◽ Silicone Sealant (Self-leveling) ◽ Silicone Sealant (Non-Sag) ◽ Hot-pour (Rubberized Asphalt) ◽ Compressive seal (preformed) ◽ Other: ______________ 3. Indicate how your agency uses the National Transportation Product Evaluation Pro- gram (NTPEP) database for sealants. (For example, if your agency uses the NTPEP data- base for both hot-pour sealant product approval and quality control/assurance, enter “a b” in the corresponding field. For any sealant types your agency does not use, simply leave the corresponding field blank). a) Product approval. b) Quality control/quality assurance. c) Does not use the NTPEP database. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________.

84 Portland Cement Concrete Pavement Joint Sealant Practices and Performance Sealant Design 4. Indicate the typical reservoir width(s) used by your agency. a) 1⁄8″ b) 1⁄4″ c) 3⁄8″ d) 1⁄2″ e) 5⁄8″ f) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. 5. Rank the reasons why these widths are used by your agency. a) Due to joint spacing considerations. b) Due to climatic considerations. c) Due to noise considerations. d) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. 6. Indicate the range of shape factor(s) (width/depth-see figure below) used in PCC pave- ment projects by your agency. a) 1.5–2.0 b) 1.0–1.5 c) 0.5–1.0 d) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. 7. Indicate the sealant configuration your agency uses for joint sealing (see figure below). a) Recessed. b) Flush-filled. c) Overbanded. d) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________.

Questionnaire 85   Sealant Installation 8. What method does your agency use to clean and prepare the sawcut for sealing (select all that apply)? ◽ Water blasting. ◽ Air blasting. ◽ Sand blasting. ◽ Wire brushing. ◽ Air-drying. ◽ Other: ______________ 9. Order the joint preparation methods followed by your agency. ex. 1. Sand blasting → 2. Water blasting → 3. Air-drying 1. Water blasting only 1. Water blasting → 2. Air-drying ◽ Water blasting. ◽ Air blasting. ◽ Sand blasting. ◽ Wire brushing. ◽ Air-drying. ◽ Unsure. Order: ______________ 10. How long does your agency wait to install the sealant after completion of joint preparation? ◽ Less than 1 hour. ◽ Between 1 hour and 6 hours. ◽ Between 7 hours and 12 hours. ◽ Between 13 hours and 1 day. ◽ Over 1 days. ◽ Unsure. ◽ Other: ______________ 11. How does your agency inspect for sawcut cleanliness (select all that apply)? ◽ Does not inspect for cleanliness. ◽ Visual Inspection. ◽ ACPA quality control wipe test. ◽ Finger test. ◽ Other: ______________ 12. Does your agency check for moisture on the face of the sawcut prior to installation of the joint sealant? ◽ Yes ◽ No

86 Portland Cement Concrete Pavement Joint Sealant Practices and Performance 13. Following cleaning operations or a rainfall event, what is your agency’s policy with regard to waiting for the face of the sawcut to dry sufficiently prior to installation of the joint sealant? ◽ Does not wait. ◽ Less than 1 day. ◽ Between 1 day and 3 days. ◽ Over 3 days. ◽ Unsure. ◽ Other: ______________ Sealant Performance 14. Indicate the average performance life experienced by your agency. a) Less than 3 years. b) Between 3 and 6 years. c) Between 7 and 10 years. d) Between 11 and 15 years. e) Over 15 years. f) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. 15. Rank the most important factor(s) used by your agency in sealant type selection. a) Cost. b) Service life. c) Special purpose. d) Contractor installation skill. e) Material availability. f) Climatic factors. g) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. 16. Does your agency have a pavement performance database that includes sealant condition? ◽ Yes ◽ No 17. Indicate the principle distress type(s) most frequently experienced by your agency. a) Debonding and adhesive separation. b) Push down. c) Aging and cohesive cracking. d) Displaced. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________.

Questionnaire 87   18. Indicate your agency’s use of these distress types with regard to estimating their effect on performance. a) Yearly trends of sealant condition. b) Establishment of agency resealing policy. c) Effectiveness estimates. d) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. Sealant Maintenance 19. Does your agency conduct joint resealing operations? ◽ Yes (Go to Q 20) ◽ No (Go to Q 22) 20. Indicate the criteria your agency uses to determine if resealing is needed (select all that apply). a) Missing joint sealant. b) Cracked or debonded sealant. c) Spalling/cracks around joints. d) Noisy joints. e) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. 21. Indicate the factors considered by your agency as to when sealant maintenance is carried out. a) The life of the sealant with respect to the conditions listed in previous question. b) The condition of the pavement with respect to a given distress type. c) Unsure. Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. 22. Indicate the issues experienced by your agency with joint seals in general (select all that apply). a) Shortened service life. b) Water presence. c) Movement. d) Noise. e) Other (please specify). Hot-pour sealant: ______________. Silicone sealant: ______________. Preformed sealant: ______________. Alternatives 23. Does your agency use any alternative method(s) instead of sealing joints? ◽ Yes (Go to Q 24) ◽ No (Go to the end)

88 Portland Cement Concrete Pavement Joint Sealant Practices and Performance 24. What alternative method(s) to joint sealing does your agency employ (select all that apply)? ◽ Reduced maximum joint opening. ◽ Improved subbase performance. ◽ Improved drainage performance. ◽ Improved durability performance. ◽ Other: ______________ Please provide your contact information below and indicate if you would be open to a follow-up interview. Name: ___________________________________________________ Organization: _____________________________________________ Position: _________________________________________________ Email Address: ____________________________________________ Phone Number: ___________________________________________ Follow-up Interview? (Yes/No)