掺钨矿渣砂浆的半柔性路面水稳性能研究

Study on Water Stability of Semi Flexible Pavement Mixed with Tungsten Slag Mortar

基于目前国内对钨矿渣(以下简称钨渣)处理的研究,为了拓展钨矿渣的利用,根据半柔性路面普通灌浆料的配合比设计,分别设计了0%、5%、10%、15%、20%、25%钨渣掺量的钨渣砂浆进行力学性能实验,再分别将砂浆灌注到相同孔隙率的母体沥青混合料中,进行标准马歇尔实验,浸水马歇尔实验、冻融劈裂实验、真空饱水实验,结果表明掺钨渣砂浆其水稳定性随着钨渣掺量的增加呈现先增加后下降的趋势,且在钨渣掺量为15%时,对半柔性路面的水稳性能提升效果最为显著。

Based on the current domestic research on the treatment of tungsten slag(hereinafter referred to as tungsten slag),in order to expand the utilization of tungsten slag,according to the mix proportion design of ordinary grouting material for semi flexible pavement,tungsten slag mortar with 0%,5%,10%,15%,20%and 25%tungsten slag content is designed respectively for mechanical performance test;and then the mortar is poured into the parent asphalt mixture with the same porosity,Standard Marshall test,immersion Marshall test,freeze-thaw splitting test and vacuum water saturation test are carried out.The results show that the water stability of mortar mixed with tungsten slag increases first and then decreases with the increase of tungsten slag content,and when the tungsten slag content is 15%,the effect on improving the water stability of semi flexible pavement is the most significant.