硅藻精土对沥青混合料水稳定性的影响

Effect of diatomite on water resistance of asphalt mixture

将硅藻精土掺配在沥青混合料中，可以改善沥青混合料的物理力学性能，提高路面工程的质量。采用室内试验的方法，得出马歇尔残留稳定度和冻融劈裂强度比2个试验指标，对掺加硅藻精土的沥青混合料进行水稳定性能研究。试验结果证实，硅藻精土能够很好地改善沥青混合料的水稳定性，且其掺量应控制在10％-15％。

The addition of diatomite can improve the physical-mechanical performance of asphalt mixture and enhance the quality of roal surface engineering. An experimental investigation was undertaken. The Marshall stability of impregnated asphalt mixture and the freeze-thaw split strength were tested. The water resistance of asphalt mix-ture which was added with diatomite was studied. According to the laboratory experimental investigation, it is approved that diatomite can improve the water resistance of asphalt mixture and the additive value of diatomite should be controlled between 10% and 15%.