高性能混凝土的强度与渗透性的关系

The Correlation between Strength and Permeability of Concrete

通过对纯水泥高性能混凝土以及掺有矿渣或粉煤灰的高性能混凝土的一系列试验,研究了高性能混凝土的强度与渗透性的关系。结果表明,纯水泥混凝土的强度与渗透性之间有很好的相关性,其相关系数为0.9768;矿渣混凝土及粉煤灰混凝土的强度与渗透性之间相关性较差,相关系数分别为0.8075和0.8419;而所有混凝土的强度与渗透性之间的相关性更差,相关系数仅为0.6568。可见,除非用于纯水泥混凝土之间的相对比较,高性能混凝土的强度通常不能反映其渗透性。

Through experiments of high performance concrete with or without slag or fly ash, it shows that the correlation between strength and permeability for pure cement concrete is good, with correlation coefficient of 0. 9768; and that for slag concrete or fly ash concrete is not as good as that for pure cement concrete, with correlation coefficient 0. 8075 or 0. 8419; and that for all concrete is poor, correlation coefficient 0. 6568. It seems herein that except for relative comparison among pure cement concrete, the strength of high performance concrete generally cannot reflect its permeability.