Evaluation of Partial Depth Spall Repair Materials and Proceduresby Arti J. Patel, ERES Consultants Inc, Savoy, United States,
David G. Peshkin, ERES Consultants Inc, Savoy, United States,
A. Russell Romine, ERES Consultants Inc, Savoy, United States,
Document Type: Proceeding Paper
Part of: Materials: Performance and Prevention of Deficiencies and Failures
In 1990, as a part of a Strategic Highway Research Program project (SHRP H-106, Innovative Materials Development and Testing), an investigation was initiated to evaluate the performance of six rapid setting cements, a polymer modified cement, a polyurethane, an epoxy, an epoxy-urethane, and two bituminous cold mixes used for repairing partial depth spalls in portland cement concrete (PCC) pavements. In conjunction with the various materials being evaluated, five patching procedures, varying in the method of concrete removal and surface preparation, are being studied. These techniques include saw and patch, mill and patch, waterblast and patch, jackhammer and patch, and adverse condition clean and patch. From April through July of 1991, over 1500 partial depth spalls were repaired at four test sites in four climatic regions of the United States using the materials and procedures under evaluation. These installations were carefully monitored and their performance is being evaluated at periodic intervals. In addition, laboratory tests were conducted to determine the physical properties of the materials to identify correlations with field performance.
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