Abstract Laboratory tests were performed to determine the most effective application of tuff minerals as an aggregate of asphalt mixture for expressway asphalt pavements. In the tests, the physical and mechanical characteristics of tuff, limestone, and basalt aggregates were compared. The high-temperature performance, low-temperature performance, and water stability of the asphalt mixture were also compared under the conditions involving different mixture types, different asphalts, and different mineral aggregate combinations. Test results indicate that (1) except for low-grade asphalt mixtures, tuff asphalt mixture achieves good road performance that meets Chinese specifications when the shape of the tuff aggregate is regular and clean. Moreover, (2) the comprehensive road performance of the asphalt mixture composed of tuff and other aggregates shows obvious improvement relative to the common aggregate asphalt mixture.
LIN Miao,YANG Tao,GUAN Hong-xin. Experimental Research on the High-Temperature Performance, Low-Temperature Performance, and Water Stability of Tuff Asphalt Mixture[J]. Journal of Highway and Transportation Research and Development, 2016, 10(3): 1-7.
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