Cost-Benefit Analysis of the Effectiveness of Crack Sealing Techniques Status: CompleteReport Date: 07/31/2019 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
