【摘要】 为了研究排水沥青混合料堵塞过程中连通空隙率与渗水系数的变化规律,进行了室内模拟堵塞与渗水性能试验。研究结果表明,在内部空隙堵塞阶段,渗水系数与连通空隙率具有很好的线性关系,而在表面饼状堵塞阶段,渗水系数与连通空隙率没有明显相关性,且混合料渗水系数衰减速度较连通空隙率下降速度更快;随着堵塞物的增加,排水沥青混合料渗水系数残留率的衰减速度越来越快,抗堵塞能力越来越差。更多还原

【Abstract】 In order to study the variation of connected porosity and coefficient of permeability during the clogging process of drainage asphalt mixture,laboratory simulation of clogging and permeability tests were carried out.The results show that there is a good linear relationship between the coefficient of permeability and the connected porosity in the internal void clogging stage,but there is no obvious correlation between them in the surface cake-like clogging stage,and the attenuation rate of the coefficient of permeability of the mixture is faster than that of the connected porosity;with the increase of the clogging,the residual rate of coefficient of permeability of drainage asphalt mixture decreases faster and faster,and the anti-clogging ability is getting worse and worse.更多还原