Cost-Benefit Analysis of the Effectiveness of Crack Sealing Techniques

  • Routed crack after first sealant pass
  • Airlance being used to clean a crack
Status:  Complete
Report Date:  07/31/2019


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.

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