United States Department of Transportation
i
Geotextile fabrics under an asphalt concrete overlay to retard reflective cracking : interim report.
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1994-02-01
[PDF-675.08 KB]
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Abstract:The City of Portland identified pavement surface distress on East Burnside Street between East 39th Avenue and East 47th Avenue. Therefore, the City developed a construction project to improve the pavement. The project included cold planing, an asphalt concrete leveling course, geotextile fabrics, and an asphalt concrete overlay.
The City of Portland decided to use geotextile fabrics for pavement reinforcement and carck retardation. In September 1991, the City placed Glasgrid and Polyguard geotextile fabrics on East Burnside Street. If the fabrics successfully retard reflective cracking, the City anticipates the following benefits: 1) Reduction of water infiltration into underlying cracks; 2) Retardation of vegetation growth in cracks; 3) Improvement of pavement surface quality; and 4) Reduction of future pavement maintenance costs.
Over two years have elapsed since the installation of the geotextile fabrics. The overlay over he geotextile fabrics has been inspected twice since construction. The inspections revealed some cracks in the section without the geotextile fabrics. However, the cracks are small and the performance of the test and control sections are similar; additional time is needed to evaluate the sections to determine if the City of Portland will receive the benefits listed above.
Inspections will be conducted annually until at least 1996 or until the test and control sections fail. Then, if enough information exists to determine the cost effectiveness of the geotextile fabrics (Glasgrid and Polyguard) a final report will be written.
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