对掺加PR.S添加剂沥青混合料水稳定性能的改善措施

掺加PR．S添加剂在大幅提高沥青混合料高温性能的同时，造成了其水稳定性能一定程度的下降，为此，采用水泥作为填料对其高温及水稳定性能进行研究．试验结果表明，采用水泥替代矿粉作为填料后，对掺加PR．S添加剂沥青混合料的高温性能几乎没有影响，其稳定度和劈裂强度也没有明显提高；而其残留稳定度和劈裂强度比却得到了很大的提高，甚至已经超过了未掺加PR．S添加剂时沥青混合料的对应数值．这说明采用水泥替代矿粉以提高普通沥青混合料水稳定性能的方法，同样适合于掺加PR．S添加剂沥青混合料的情况．同时，掺加PR．S添加剂并采用水泥替代矿粉作为填料的复合改性沥青混合料，适合于重载高温且降水量较大的地区采用．

Improvement on asphalt mixture's immersion stability performance with PR.S additive added

While the PR.S additive highly improved the high temperature performance of asphalt mixture,the immersion stability performance on a certain degree was declined,so the cement as a filler is used for studying the high temperature and immersion stability performances.The results show that,using the cement as a filler,there are no impacts on the high temperature performance,neither do the marshell stability and the split strength;nor the residual stability and the TRS are highly improved,even exceed the origin...