基于极差法的路面混凝土配合比优化设计

Mix proportion design of concrete pavement based on range method

合理的大流动度混凝土配合比设计,对在连续冲击荷载下提高其韧性和抗冲击性能起重要的作用.从水胶比、粉煤灰掺量、砂率三个因素进行正交试验来对大流动度路面混凝土配合比进行设计,用极差法分析其坍落度、抗折、抗压强度,得出最佳配合比.

The reasonable design of lagre flow concrete mix proportion contributes to improving its toughness and impact resilience under the continuous impact load. In this paper,the orthogonal tests were conducted through water to binder ratio,fly ash mixed and sand ratio to design the concrete mix ratio of pavement with high fluidity,so the optimum mixing ratio will be obtained through the analysis of its slump,flexural strength,compressive strength with the range method.