聚乙烯醇纤维水泥基复合材料水压渗透模型与分析

Model and Analysis of PVA Fiber Reinforced Cement Matrix Composite under Hydraulic Permability Environment

水在PVA纤维水泥基复合材料中的渗透性一定程度上决定PVA纤维水泥基复合材料的劣化速度。基于达西定律,本文在试验研究基础上,推导得出水在PVA纤维水泥基复合材料中渗透系数的计算模型,分析了纤维体积率、粉煤灰、硅粉对PVA纤维水泥基复合材料抗渗性能的影响。研究结果表明,该模型能很好地评价水在PVA纤维水泥基复合材料中的渗透性。

To some extent the permeability of water in the PVA fiber reinforced cement based composite materials determines the speed of deterioration of PVA fiber reinforced cement based composite material.Based on Darcy＇s law,the model of permeability coefficient of water in the PVA fiber reinforced cement matrix composite is derived.By the hydraulic permeability experiment,the thesis studies the effects of fiber volume ratio,fly ash and silica fume on the impermeability of PVA fiber reinforced cement matrix composite material.The results show that the model can be used to evaluate the permeability of water in the PVA fiber reinforced cement based composite materials.