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原文传递 Test Method to Determine Aggregated/Asphalt Adhesion Properties and Potential Moisture Damage.

题名：	Test Method to Determine Aggregated/Asphalt Adhesion Properties and Potential Moisture Damage.
作者：	williams, r. c.
关键词：	moisture damage,adhesion,aggregates,asphalts/cohesion, fracture energy, test methods, screening tests, testing procedures, mass losses, quantitative analysis/stripping test
摘要：	The aim of this research project was to improve current practice by investigating different test methods to quantify moisture damage in an effort to serve the short and long term needs of the agency and industry. In the short term, more efficient test methods were investigated for use as a screening test to supplement current testing procedures. The Stripping Test was chosen as a candidate to serve this need. This test measures the mass loss due to moisture conditioning of a HMA loose mix. The test was evaluated in terms of serving as a screening test to waive mechanical testing requirements for mixes that display resistance to moisture damage. To serve the long term needs of the agency the use of fracture energy, a fundamental property of the asphalt mixture, was investigated as a first step in identifying a parameter that relates to pavement performance. The research involved selection and testing of common HMA mixes used in Wisconsin using the stripping test to measure percent mass loss and the indirect tension test to measure tensile strength and fracture energy. Test results were evaluated on an individual basis in their ability to reliably identify moisture damage due to sample conditioning and the effects of the addition of an anti-stripping agent or change in aggregate type or gradation. The results of the mechanical testing were compared to the non-mechanical test results to evaluate the possibility of incorporating a non mechanical screening test into current WisDOT asphalt mixture testing specifications. Furthermore, the statistical method of analysis of variance was performed on the mechanical testing results to identify significant effects. The quality of the mechanical tests was then determined by evaluating if the significant effects were consistent between the mechanical testing parameters and with common engineering knowledge. / NOTE: Final rept. 2004-2007. / Supplementary Notes: Sponsored by Federal Highway Administration, Madison, WI. Wisconsin Div. and Wisconsin Dept. of Transportation, Madison. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
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