Construction of a Composite Pavement (Asphalt over Concrete) in Virginia
The U.S. Strategic Highway Research Program 2 (SHRP2) identified composite pavement as a “renewal solution” and the Virginia Department of Transportation (VDOT) received implementation funding to demonstrate its feasibility. In 2017, this funding was applied to support major rehabilitation of two westbound lanes of US?60?in Henrico County, Virginia, a project that essentially replaced 1.1?mi of deteriorated concrete pavement with a new composite system consisting of continuously reinforced concrete pavement (CRCP) overlaid with stone matrix asphalt (SMA). This paper documents the design and construction of this new composite pavement. It also includes results from through-the-thickness temperature monitoring and a summary of performance for the first 4?years after opening to traffic.Close oversight by researchers provided a review of challenges and associated lessons learned from the design and construction process. Current VDOT specifications and standards were sufficient for successful construction. The asphalt overlay appeared to reduce the temperature gradient within the CRCP and to moderate daily temperature swings. This insulating effect of asphalt is expected to lower curling and associated stresses in the concrete pavement, which may permit reduced concrete thickness requirements in designs and also enable longer service life. The cracks in CRCP were tight and were not expected to reflect through the SMA. Moreover, the SMA mixture was tested to be crack and rut resistant. Therefore, a crack- and rut-free long service life for this composite pavement is expected. A recent visual survey by researchers found no observable distresses after 4?years under traffic.
- Record URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
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Supplemental Notes:
- M. Shabbir Hossain https://orcid.org/0000-0002-8963-117X© National Academy of Sciences: Transportation Research Board 2022.
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Authors:
- Shabbir Hossain, M
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0000-0002-8963-117X
- Nair, Harikrishnan
- Celik Ozyildirim, H
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0000-0001-6969-0554
- Publication Date: 2022-10
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 251-264
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Volume: 2676
- Issue Number: 10
- Publisher: Sage Publications, Incorporated
- ISSN: 0361-1981
- EISSN: 2169-4052
- Serial URL: http://journals.sagepub.com/home/trr
Subject/Index Terms
- TRT Terms: Composite pavements; Construction; Continuously reinforced concrete pavements; Lessons learned; Pavement design; Pavement performance; Rehabilitation; Stone matrix asphalt
- Geographic Terms: Henrico County (Virginia)
- Subject Areas: Construction; Design; Highways; Maintenance and Preservation; Pavements;
Filing Info
- Accession Number: 01844960
- Record Type: Publication
- Files: TRIS, TRB, ATRI
- Created Date: May 9 2022 11:59AM