United States Department of Transportation
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Evaluation and Improvement of Bituminous Maintenance Mixtures
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1995-11-01
[PDF-4.18 MB]
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Edition:Final Report: September 1993 - August 1995
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Abstract:The objective of this study was to provide the Texas Department of Transportation with a means to assure quality of cold-applied asphalt stabilized maintenance mixtures. Samples of 17 different maintenance mixtures were obtained from across the state and 14 of these were stockpiled at Texas A&M's Riverside Campus. These materials were evaluated in terms of field aging and field workability. To evaluate the aging of the field materials, laboratory tests were performed to determine resilient moduli, tensile strength and extracted binder properties. Findings indicated that only minimal aging occurred in most of the mixtures in a six-month period. The workability of the stockpiled field materials was subjectively evaluated and compared to laboratory measurements aimed at quantifying workability. Comparisons of field ratings to laboratory measurements indicated that there was no clear relationship.
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