Journal
JOURNAL OF TRANSPORTATION ENGINEERING PART A-SYSTEMS
Volume 143, Issue 6, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/JTEPBS.0000044
Keywords
Optimal timing; Preventive maintenance; Performance model; Cost-effective; Long-term pavement performance (LTPP)
Funding
- Federal Highway Administration (FHWA)
- National Key Basic Research and Development Program (973 Program) [2011CB013800]
- Effectiveness and Applicability of Asphalt Pavement Maintenance Techniques in Zhejiang project founded by Zhejiang Transportation Engineering Construction Group Co. [8521002166]
- China Scholarship Council
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One obstacle to the optimal time for pavement maintenance treatments based on the expected performance or cost-effectiveness is the lack of posttreatment performance models at different timings. This study first summarized the current effectiveness/cost-effectiveness evaluation methods. Then, the posttreatment performance model was established based on the pretreatment performance model and other factors such as traffic and environment. By incorporating the incremental posttreatment performance models into the effectiveness evaluation, an optimization method was developed to calculate the dynamic effectiveness/cost-effectiveness and to select the optimal performance threshold. Investigation of 243 sections from the long-term pavement performance (LTPP) database showed that when the pavement deteriorated very fast, an early age treatment was recommended, whereas when the pavement condition was good and the deterioration rate was not fast, a higher optimized international roughness index (IRI) threshold was recommended. In addition, the optimal IRI thresholds for fog seal and crack seal are lower than those of thin overlay, chip seal, and slurry seal, indicating that it is more effective or cost-effective to apply fog seal and crack seal treatments at a relatively early age. (C) 2017 American Society of Civil Engineers.
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