APPENDIX B

State Survey Responses

Survey Responses

Responding States

Alabama

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

District of Columbia

Florida

Georgia

Hawaii

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Puerto Rico

Rhode Island

South Dakota

Tennessee

Texas

Utah

Virginia

Washington

West Virginia

Wyoming

Procedures, Materials, and Specifications

1. Does the DOT distinguish between narrow cracks suitable for conventional sealants and fillers (typically complying with ASTM D6690 and ASTM D5078) and wide cracks where sealants and fillers are not able to adequately seal the pavement?

1. If yes, what is the minimum width of a wide transverse crack no longer suitable for conventional crack sealing/filling?

Other:

• Depends on the length of the crack on asphalt pavement. (On composites, then cause eval.)

2. If yes, what is the minimum width of a wide longitudinal joint or crack no longer suitable for conventional crack sealing/filling?

3. If no, does the DOT define a wide crack, regardless of orientation?

• Yes, what is that width? (inches).

If no, skip logic takes respondent to [Thank you for your response] page (end survey) after answering 1d.

1. 4. Does the DOT have a method of distinguishing and treating wide cracks?
      
      

2. How is a wide transverse or longitudinal crack (defined by the widths given in Question 1) detected in the field? Check all that apply.

Other:

• Varies by District

3. Does the DOT have specifications, guidelines, or other written documentation describing the materials and/or procedures used to repair wide transverse cracks or longitudinal joints/cracks?

• If yes, Please share the documentation via one of the following methods:
  • Email to David Peshkin.
  • Provide link to files in comments field below.
  • Upload now (Up to 10 files at 25MB each can be loaded one at a time using the Browse button).

Uploads:

Comments:

4. Does the DOT have specifications, guidelines, or other written documentation describing how does the presence of defects (other than crack width) affect the decision to repair wide cracks?

Uploads:

Comments:

Wide transverse cracks

5. Has the DOT established any of the following limits for when transverse cracks are too wide to effectively be treated by wide crack repair technique(s)?

6. Does the DOT have written guidance identifying different transverse crack width limits based on any of the following: traffic volume, roadway classification, climatic region/environmental zone, or other?

If Yes, please complete the tables below or provide the guidelines.

No uploads.

Comments: North Dakota – ND = Table on Chapter 5 page 2 of the maintenance operations manual attached in question 3.

7. Based on the DOT’s criteria for identifying wide transverse cracks, what materials are used to treat wide transverse cracks? Select all that apply.

Other:

• See email 2/13/24 6:46 pm (APL - https://azdot.gov/sites/default/files/2024-02/approved-product-listFebruary-2024.pdf [Last accessed September 15, 2024]).
• Composite geosynthetic.
• ASTM D36, D3111, D70 or D5329.
• We are moving towards mastics but Maintenance also fills will stone and emulsion using a DuraPatcher.
• Cold mix.
• Piloted Fibrecrete product.
• As evaluated and directed by the Materials Office.
• Experimented with mastic but not implemented.
• No spec.
• Have added granite chips to the mastic application.
• Microsurfacing.
• Crack sealer and 4.75mm HMA.

8. Do the materials specified and used vary based on any of the following: traffic volume, roadway classification, climatic region/environmental zone, other?

If yes, please identify how materials vary using the following table.

No uploads.

Comments: California - CA section 37-6 already attached in previous question.

9. What wide transverse crack repair materials are on the DOT’s approved product list? Please indicate or provide a link to that segment of the DOT’s approved product list:

10. Are there wide transverse crack repair materials that are not yet on the approved product list that the DOT has used, such as in pilot projects, in the laboratory, or on pavements?

Wide Longitudinal Joints and Cracks

11. Based on the DOT’s criteria for identifying wide longitudinal joints or cracks, what materials are used to treat wide longitudinal cracks or joints? Select all that apply.

Other:

• See email 2/13/24 6:46 pm.
• ASTM D36, D5329, D3111, D70.
• We are moving towards mastics, but Maintenance also fills with stone and emulsion Using a DuraPatcher.
• Cold mix.
• For wide longitudinal cracks, we would contact the Materials Office for recommendation. Temp. rep.
• Matrix - ASTM D6297 Table 1.
• Microsurfacing.
• Crack sealer and 4.75mm HMA.

12. Has the DOT established limits for when longitudinal joints or cracks are too wide to effectively be treated by wide crack repair technique(s)?

13. Do the longitudinal crack or joint width limits vary based on any of the following: traffic volume, roadway classification, climatic region/environmental zone, other?

If Yes, please identify criterion value and limit in the following table.

No uploads.

Comments: California - CA section 37-6 already sent in previous question.

14. What wide longitudinal crack or joint repair materials are on the DOT’s approved product list? Please indicate all products or provide a link to that segment of the DOT’s approved list:

15. Are there longitudinal crack or joint repair materials that are not yet on the approved product list that the DOT has used, such as in pilot programs, in the laboratory or on pavements?

Placement Techniques

16. What crack preparation technique(s) is used for treating wide transverse cracks? Select all that apply.

Other:

• Tool and blow out debris. Use Type A/type B resin mixture or as directed by the Materials Office.
• Mfr. Recommendations.
• Routing or sawing.
• Routing as needed.
• Backpack blowers.
• Preheat edges of the crack.
• “Remove debris and loose deteriorated pavement” (no specific method required).

Wide Crack Repair Performance

17. What measures are used to assess how long a wide transverse crack or wide longitudinal joint/crack repair performs (i.e., how long it remains effective)? Select all that apply.

Other:

• IRI. Transverse thermal cracks lead to deteriorated ride over time if not addressed.
• Varies by District

18. Has the DOT constructed test sections to evaluate the performance, cost-effectiveness, or other characteristics of wide transverse crack and longitudinal joint or crack repair materials and procedures?

No uploads.

Comments:

19. Has the DOT evaluated the cost-effectiveness of wide transverse crack and longitudinal joint or crack repair materials and procedures other than through test sections (e.g., analysis of in-place performance)?

No uploads.

Comments:

• Arizona - AZ: Maintenance uses procurement contracts and you can find the contract documents online at https://app.az.gov/page.aspx/en/ctr/contract_browse_public (Last accessed September 15, 2024). Search term ‘asphalt crack’ in the keywords. ADOT has a contract (CTR060214) for Texas A&M to do research in this area. https://app.az.gov/page.aspx/en/ctr/contract_manage_public/64849 (Last accessed September 15, 2024). The research resulted in NCHRP Research Results Digest 399.
• Washington – WA: https://www.wsdot.wa.gov/research/reports/fullreports/871-2.pdf. (Last accessed September 15, 2024).

20. What is the typical performance life (that is, how long does the treatment remain effective) for wide transverse crack repair materials and techniques? (for each material/technique given previously)

Other:

• Emulsions.
• High variability on performance depending on existing pavement condition.
• This answer applies to all our materials.
• A lot of variables affecting performance.
• Service life depends on location, traffic, env, weather, etc. All life ranges have been observed.
• Recommended to seal cracks within 3 years of construction and maintain every other year.
• We used milling to remove loose materials in longitudinal joints. Generally, it lasts longer. But we do not have the data that show how the performance life.
• Clean, dry cracks aid performance.
• Clean, dry cracks that are warm seem to aid adhesion and life extension can be substantial depending on ADT.

21. What is the typical performance life (that is, how long does the treatment remain effective) for wide longitudinal crack and joint repair materials and techniques? (for each material/technique given previously)

Other:

• Same see above.
• Varies, can be longer.
• Spec 407.

22. Has the DOT observed any impact of wide transverse crack repairs on surface performance measures?
    1. Roughness.

1. 2. Friction.

1. 3. Noise.

Costs

23. For each wide transverse crack repair procedure/material, what is the approximate in-place repair cost (materials and installation costs only) per linear foot?

24. For each wide longitudinal crack or joint repair procedure/material, what is the approximate in-place repair cost (materials and installation costs only) per linear foot?

25. As a follow-up to this questionnaire, we are interested in interviewing selected respondents for case examples. Would you be willing to participate in a case example interview, if selected?