混凝土砖收缩特性试验研究

Research on the Shrinkage Properties of Concrete Brick

通过各种条件下混凝土砖的失水和收缩试验,分析了混凝土砖的收缩机理、混凝土自身收缩对混凝土砖收缩的影响以及混凝土砖收缩的部分不可逆性质,得到了混凝土砖的失水特性及其干燥收缩率与相对含水率的关系.运用毛细管张力理论,论证了混凝土砖在失水各阶段的干燥收缩特征.

Through testing the dryness and shrinkage of the common concrete brick under various environments, the mechanism of the shrinkage of concrete bricks, the effect of autogenous shrinkage on the shrinkage of concrete brick and the characteristic of partly inreversible shrinkage was analyzed . The characteristic of the dryness and the relation between the moisture content and the shrinkage of concrete brick were investigated. Using the theory of capillary tube tension, the characteristics of the shrinkage in different moisture contents were expounded and proved.