United States Department of Transportation
i
Practices for Maintaining and Resurfacing Existing Composite Pavements
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2024-01-01
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[PDF-3.52 MB]
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Edition:Final Report
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Abstract:In recognition of the prevalence of asphalt concrete (AC) overlays as a rehabilitation solution for existing portland cement concrete (PCC) pavements, this project looked at State Departments of Transportation (DOTs) practices for the evaluation, design, construction, maintenance, and rehabilitation of AC/PCC composite pavements. This was primarily accomplished through a 2-day, multi-agency peer exchange, meetings with selected State DOTs, and the preparation of case studies highlighting practices that have been used by State DOTs in managing their composite pavement systems. It was found that many State DOTs have experienced improved performance as the result of ongoing research studies and initiatives. Much of that improved performance is the result of the State DOTS taking a “systems” approach to considering and addressing the potential for reflective cracking issues throughout the entire composite pavement design and construction process, including: Evaluation of existing pavement. Selection of appropriate overlay materials. Development of appropriate overlay thickness. Effective preparation of existing pavement and placement of overlay. Timely application of effective future maintenance and rehabilitation treatments. This report documents the various activities that were performed under the project, provides key takeaways from the State DOT outreach meetings, and presents practices being used by the State DOTs in managing their AC/PCC pavements.
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