普通混凝土在微观上是多组分、多相、多孔的堆聚结构。宏观上也可以把普通混凝土看作是水泥石与粗、细骨料组成的复合材料 ,因此它的力学性能主要取决于水泥石的性能、粗细骨料的性能及水泥石与骨料之间粘结能力和它们相对的体积含量。１混凝土微观结构对渗透性影响（１）根据 Ordinary concrete microstructure is multi-component, multiphase, porous stacking structure. Macroscopically, normal concrete can also be regarded as a composite material composed of cement stone and coarse and fine aggregates. Therefore, its mechanical properties mainly depend on the properties of cement stone, the properties of coarse and fine aggregates and the adhesion between cement stone and aggregate Knot ability and their relative volume content. 1 concrete microstructure permeability (1) according to