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dc.contributor.authorWen, Haifang
dc.contributor.authorMartono, Wilfung
dc.contributor.authorLi, Xiaojun
dc.identifier.otherOCLC: 636128764en
dc.identifier.otherTRID: 01339100en
dc.description133 p.
dc.description.abstractWhitetopping (WT) overlay is a concrete overlay on the prepared existing hot mix asphalt (HMA) pavement to improve both the structural and functional capability. It?s a relatively new rehabilitation technology for deteriorated HMA. If the slab thickness is less or equal to 4 in., it is referred to as ultra-thin whitetopping (UTW). The primary objectives of this study are to catalog the WT and UTW projects in Wisconsin, document pertinent design and construction elements, assess performance and estimate a service life of these projects. A comprehensive literature review was performed. A database of the WT and UTW projects was established covering 18 projects built from 1995 to 2007 in Wisconsin. The performance of these WT and UTW projects was assessed, by means of shear strength tests on field cores, falling weight deflectometer (FWD) tests on selected projects, and field distress survey on in-service projects. FWD backcalculation methods for WT and UTW pavements were studied and a Critical Distance Method was proposed and utilized for UTW pavement. Fatigue life was analyzed using 18kip, 22kip and 26kip single axle load level. Performance assessment was conducted using both Pavement Condition Index (PCI) and Pavement Distress Index (PDI). The performance of WT projects in Wisconsin was found comparable to that in other states. WT overlay thickness, joint spacing and pavement age were found to have significant effects on pavement performance.en
dc.publisherWisconsin Highway Research Programen
dc.subjectConcrete overlaysen
dc.subjectFalling weight deflectometersen
dc.subjectFatigue testsen
dc.subjectRehabilitation (Maintenance)en
dc.subjectAsphalt pavementsen
dc.subjectPavement distressen
dc.subjectCondition surveysen
dc.subjectPavement performanceen
dc.subjectService lifeen
dc.subjectPavement designen
dc.subjectShear strengthen
dc.titlePerformance assessment of Wisconsin's whitetopping and ultra-thin whitetopping projectsen
dc.typeTechnical Reporten

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  • Wisconsin Highway Research Program
    The Wisconsin Highway Research Program is intended to integrate the highway research efforts of the Wisconsin Department of Transportation, academia, and industry representatives to strategically improve Wisconsin’s highways and transportation system.

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