乳化沥青-水泥复合胶浆稠度研究

Consistency Properties of Emulsified Asphalt-Cement Composite Mortar

目的研究乳化沥青-水泥复合胶浆的稠度性质,为乳化沥青混合料性能优化提供科学依据.方法采用自主研发的新型稠度测试仪,探究了水泥与乳化沥青不同用量比对复合胶浆稠度的影响,在此基础上,分析了水泥对乳化沥青-水泥复合胶浆稠度的贡献率.结果水泥与乳化沥青用量比为22%时,其胶浆稠度达到最大值,表现出较强的黏韧性;在25℃和45℃测试条件下,水泥稠度贡献率分别为65.5%和55.5%,且25℃测试条件下水泥对沥青黏结成膜状态的促进作用及其胶浆稠度的贡献程度更加显著.结论水泥和乳化沥青这两种胶结材料相互影响和制约,水泥水化物结构不仅对胶浆稠度具有提升作用,还对乳化沥青黏结成膜作用的优化具有一定的贡献.

The consistency of emulsified asphalt-cement composite cement was studied in order to provide a scientific basis for optimizing the performance of emulsified asphalt mixture.Effect of cement and emulsified asphalt different dosage ratio on the consistency of composite cement was studied by a new consistency tester independently developed.On this basis,the contribution rate of cement to the consistency of emulsified Asphalt-Cement composite mortar was analyzed.When the ratio of cement to emulsified asphalt is 22%,the consistency of the composite mastic reaches the maximum,showing strong adhesiveness,At the same time,the contribution rates of cement consistency were 65.5%and 55.5%respectivelyat 25℃and 45℃,under the test condition of 25℃,the contribution of cement to the adhesion formation of asphalt and composite mastic are more significant.Cement and emulsified asphalt interact and restrict each other.Cement hydrate structure not only enhances the consistency of composite mastic,but also contributes to the optimization of emulsified asphalt binder film formation.