Preliminary Research Findings on the Effect of Coarse Aggregate on the Performance of Portland Cement Concrete Paving
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1993-10-01
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Edition:Interim
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Abstract:This report focuses on aggregates used in the construction of continuously reinforced concrete pavements (CRCP). Specific chapters address (1) past research regarding aggregates used in asphalt concrete paving, (2) field and laboratory investigations of asphalt concrete pavements, and (3) CRCP behavior and distress. Also addressed are research activities related to aggregates used in asphalt cement concrete pavements. The report reviews such topics as spalling and punchout distresses in continuously reinforced and jointed pavements, aggregate shape characterization using fractals, and the determination of sawcut depth using fractal analysis. Some of these activities relate directly to improving pavement performance, regardless of aggregate type used for construction. Early recommendations based on the project's significant findings have already been presented to the Texas Department of Transportation.
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