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普遍认为沥青路面动水压力水害的发生,主要是行车压力瞬间释放和水在变孔径的空隙中的压力变化而导致的。文章针对现有模拟动水压力方法的不足,提出了气压式动水压力模拟方法,并设计加工了动水冲刷试验系统。为了使沥青混合料的动水冲刷模式与路面实际相符,还设计了定向冲刷模式。动水压力试验前后的马歇尔试件劈裂试验结果表明,动水冲刷导致沥青混合料试件强度降低明显。
It is generally believed that the occurrence of hydrodynamic pressure water damage on asphalt pavement is mainly caused by the instantaneous release of driving pressure and the pressure variation of water in the voids of variable pore size. In this paper, aiming at the deficiency of the existing methods of hydrodynamic pressure simulation, the aerodynamic pressure simulation method is proposed and the hydrodynamic flushing test system is designed and processed. In order to make the asphalt mixture dynamic water flushing mode and the actual road surface, also designed directional erosion mode. The results of Marshall specimen splitting before and after hydrodynamic pressure test show that the strength of asphalt mixture specimen decreases obviously due to the action of moving water.