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Integration of GPR and Core Data Laboratory Testing to Identify the Causes of Premature Pavement Failures

Despite significant advancements in pavement technology, premature pavement failure and distresses continue to happen. The root causes of these failures need to be identified to prevent them from occurring and to derive corrective solutions. This paper reports various Ground Penetrating Radar (GPR) highway pavement field applications based on studies conducted in 2013 in the states of Ohio and New Mexico, and the commonwealth of Puerto Rico. These studies have proved GPR successful at evaluating the conditions of transverse contraction joints, locating sections of pavement where voids have developed, detecting locations and depths of potential asphalt stripping, estimating the level of moisture in base layers, and identifying misaligned dowel bars in concrete pavement. The field surveys were conducted on Interstate 75, OH, US Route 6487, NM, and Puerto Rico Highway 22, where premature pavement failures were observed. The equipment used in these studies, the methods of scanning the pavements, the analysis of the data, and the final results are discussed. The GPR data along with core data laboratory testing were used to determine the causes of these failures.

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