沥青混合料基灌注式半刚性路面抗腐性能研究

Research on Corrosion Performance of Semi-rigid Pavement with Poured Base by Asphalt Mixtures

以空隙率28%的沥青混合料矿料级配为基准,按油石比为1.8%、2.1%、2.4%、2.7%、3.0%配制成大孔隙沥青混合料,在不同油石比配制成的大孔隙沥青混合料中灌入橡胶粉水泥砂浆生成沥青混合料基灌注式半刚性路面。通过油石比为1.8%、2.1%、2.4%、2.7%、3.0%的沥青混合料基灌注式半刚性路面试样浸水、冻融劈裂强度、动水抗冲磨等抗腐性能试验研究,表明油石比大小影响沥青混合料基灌注式半刚性路面抗腐性能。当油石比在2.4%～2.6%范围内时,生成的沥青混合料基灌注式半刚性路面抗腐性能最佳。该研究可为沥青混合料基灌注式半刚性路面在工程上的应用提供依据。

Asphalt mixture aggregate gradation with 28% of void is taken as a benchmark,which is then made as porous asphalt mixtures according to asphalt/aggregate ratio of 1.8%,2.1%,2.4%,2.7%,and 3.0%.Powder cement mortar is poured into those porous asphalt mixtures in order to produce semirigid road surfaces.Then the semi-rigid road surfaces are conducted tests of corrosion performance such as soaking,frozen-thaw splitting strength,and hydrodynamic impact mill.The results show that when the asphalt/aggregate ratio ranges in 2.4%-2.6%,the produced semi-rigid pavement has a best corrosion performance,which can provide engineering basis for similar projects.