中文摘要：

为了给多孔隙聚氨酯碎石透水路面设计与施工提供参考,针对多孔隙聚氨酯碎石混合料（PPM）强度特性和路用性能开展试验研究。首先采用立方体无侧限抗压试验和矩形梁抗折试验对PPM的强度和模量进行了测试,研究成型方法、养护时间、胶水用量、碎石形状、孔隙率等因素对其强度的影响,通过全过程荷载-应力试验对PPM强度特性及破坏机理进行研究;然后针对PPM的抗变形性能、水稳定性能、抗滑性能、抗疲劳性能、抗腐蚀性能以及耐老化性能等路用性能展开试验。结果表明：胶水用量质量分数在4%-6%时,PPM抗压强度介于6-10 MPa,抗折强度介于4-6MPa,胶水用量和碎石形状对PPM强度影响显著,成型方法和养护时间、温度对其最终强度几乎没有影响;PPM具有较好的抗变形能力、抗滑性能、抗疲劳性能、抗腐蚀性能及耐光热老化性能,但其水稳定性一般,5次冻融循环后抗压强度损失率约为15%。

英文摘要：

In order to provide reference for design and construction of permeable pavement of porous polyurethane mixture, the strength and road performance of porous polyurethane mixture （PPM） were studied. Firstly, the strength and modulus of PPM were tested by unconfined cubes compression test and rectangular beam flexural test, the influence factors on the strength of PPM such as forming method, curing time, the amount of glue, gravel shape and porosity were studied and the strength properties and failure mechanisms of PPM were studied through the whole process of loading-stress test. Then the anti-deformation, water stability, slip resistance, fatigue resistance and corrosion resistance of PPM were tested. The results show that the compressive strength of PPM ranges from 6 MPa to 10 MPa and flexural strength ranges from 4 MPa to 6 MPa when the amount of glue ranges from 4% to 6%. The amount of glue and the gravel shape have significant impact on the strength of PPM while the final strength of PPM has little relationship with forming method, curing time or temperature. PPM has better anti-deformation pertormance, skid resistance, tatigue resistance, corrosion resistance light-heat aging resistance, but its water stability is not good enough. The compressive strength loss after five freeze-thaw cycles is about 15-.