Cost-Benefit Analysis of the Effectiveness of Crack Sealing Techniques

Summary:

Researchers compared clean-and-seal asphalt pavement crack repairs to rout-and-seal repairs in terms of performance and cost benefit. Survey results, construction data and field evaluation of new repairs and their performance over two years gave rout-and-seal repairs a slight cost benefit edge over clean-and-seal repairs. At an average performance index level, rout-and-seal offered about four years of service before failure; clean-and-seal offered about three years. Rout-and-seal is recommended for use over clay and silt subgrades in most conditions. Decision trees were developed to help planners and repair crews select an appropriate repair method.

Final Deliverables:

• Report #2019-26
• Appendix #2019-26A
• Research Summary

Related Materials:

• Rout-and-Seal Offers Slight Cost-Benefit Over Clean-and-Seal Repairs  - (Blog Post)
• Decision Tree for Selection of Crack Sealing Method (Figure 6.1)  - (Other)

Related Research:

• Crack Treatments for Local Governments; Status of Saw-and-Seal