关键词: 道路工程, 透水沥青混合料, 透水性能, 路用性能, 空隙率分布特性, 透水系数

Abstract: The testing methods of void ratio and the permeability coefficient of different asphalt mixtures were contrasted and analyzed.The void ratio distribution characteristics and the permeability performance of permeable asphalt mixture were tested.Such road performances as high temperature performance，low temperature performance，and water stability of the mixture were studied and investigated.The results show that the effective void ratio percentage of PAC-13 permeable asphalt mixture is obviously greater than that of PAC-10.The permeable coefficient of permeable asphalt mixture and effective void ratio have a fine exponent relationship，and no correlation existed between the void ratio and height.Application of an effective void ratio index can better reflect the permeability of permeable asphalt.With roughening，the grading of high temperature performance of the same type of permeable asphalt mixture increases and its water stability and low temperature performance is reduced.Relatively speaking，PCA-10 permeable asphalt mixture，compared with PAC-13，has better water stability and low temperature performance but relatively poor high temperature performance.

Key words: highway engineering;permeable asphalt mixture, permeable performance, road performance, distribution characteristic of void ratio, permeable coefficient