LTPP pavement maintenance materials : PCC partial-depth spall repair experiment, final report.
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1999-10-01
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Subject/TRT Terms:
- Concrete pavements
- Pavement performance
- Sealing (Technology)
- Sealing compounds
- Performance
- Service life
- Cost effectiveness
- Bituminous pavements
- Concrete pavement
- Pavement maintenance
- Partialdepth spalls
- Spa11 repair
- Patching materials
- Bituminous patch
- Cementitious patch
- Performance
- Service life
- Cost-effectiveness
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Edition:Final report; Oct. 1993-June 1999.
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Abstract:The Strategic Highway Research Program (SHRP) H-106 maintenance experiment and the Federal Highway Administration ; (FHWA) Long-Term Monitoring (LTM) of Pavement Maintenance Materials Test Sites project studied the repair of partialdepth ; spalls in concrete pavements. The purpose of partial-depth spall repair is to restore a pavement's structural integrity, ; improve its ride quality, and extend its serviceable life. ; Highway agencies spend a large amount of time and money annually performing partial-depth spall repairs, both as temporary ; and permanent fixes. Frequently, the repairs are not made as efficiently as desired or do not perform as long as intended. The ; primary consequences are added disruption to traffic, more exposure of patching crews to traffic, and additional maintenance ; expenditures. The purpose of this study, then, was to address the merits and deficiencies of current spall repair materials, ; designs, and practices. The study evaluated the relative performance of selected patching materials, as well as the effect of ; selected repair methods. The study also examined repair material properties and tests that correlate well with field performance. ; This report documents the entire portland cement concrete (PCC) partial-depth spall repair study, including the installation of 30 ; unique repair types (i.e., combinations of patching material and patching method) at 4 different test sites, the laboratory testing ; of experimental repair materials, and the 7-year performance monitoring of the various partial-depth repairs. It also discusses ; the results of comprehensive statistical analyses conducted on material performance and laboratory testing data. The results of a ; detailed cost-effectiveness analysis are also presented.
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