![]() ![]() through the National Technical Information. A mixture for full-scale evaluation of WMA under heavy aircraft loads at the FAA High Temperature Pavement Test Facility (is recommended based on the results. New Jersey 08405 Identify Safety Issues in Integration of Complex Digital Systems : March 2020. The repeated load test, static creep test, indirect tensile strength test, and asphalt pavement analyzer test evaluated all three mixtures for rutting. The laboratory designed a third mixture using Federal Aviation Administration (FAA) local materials and mix design specifications. A laboratory replicated WMA mixtures from two airport paving projects using the same materials and mix design procedures used for construction. ![]() The study includes evaluation of the three main categ ories of WMA technologies: chemical additive, organic wax, and a foaming process. This report presents a laboratory rutting performance evaluation of WMA compared to HMA. Additional laboratory and field performance evalu ation of WMA technologies under h eavy aircraft loads will provide the information needed to develop such guidance. However, further research is required to dev elop guidance for using WMA for commercial airport pavements. Empirical evidence suggests that WMA performs well under heavy military aircraft loads and can be adopted for use in airfield pavements. As state Departments of Transportation (DOT) gain experience with WMA, conventional HMA may become less available for paving. In many paving projects, warm-mix asphalt (WMA) has replaced hot-mix asphalt (HMA) as a means of reducing the environmental impacts, which include air pollution, fossil fuel depletion, and smog formation, during production of asphalt mixtures. ![]()
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