混凝土材料在拉力下力学行为的研究

ON MECHANICAL BEHAVIOURES OF CONCRETES IN TENSION

本文给出了不同集料品种、不同配合比的混凝土、砂浆、水泥浆和聚合物改性水泥浆等材料在纯拉力下的应力应变（σ－ε）曲线．得到并分析了混凝土材料在拉力下的裂纹产生，扩展与外应力的关系；弹性变形、塑性变形与水灰比，集料品种、集料含量的关系以及聚合物对水泥浆塑性变形和强度的影响．

The stress-strain(σ-ε)curves of the concretes,mortars and pasters in the condi-tion of net tension are given. The relations between cracks forming and propagating of concrete ma-terials with the tensile stress are described. The influances of the type and amount of aggregates andw/C on the properties of elastic and plastic deformation are discussed. And the influances of thepolymer amount on the strenth and plastic deformation of the polymer-cement pasteres are also dis-cussed.