单轴受压状态下的混凝土力学特性研究

进行了10-5/s、10-4/s、10-3/s三种应变速率下C30混凝土单轴压缩试验,对比并分析了混凝土的单轴受压强度、变形特性以及弹性模量等力学性能.试验结果表明,随着反应速率的不断增加,混凝土极限抗压强度呈增加的趋势,混凝土的峰值应变呈减小的趋势,单轴受压状态下混凝土的动态弹性模量比静态弹性模量陡然减小.

Study of mechanical properties of concrete under uniaxial compression condition

Uniaxial compression test of C30 strength grade concrete has been carried out at three loading rates （10-5/s, 10-4/s, 10-3/s） in this paper. And the mechanical property of concrete as uniaxial compression strength,deformation characteristic and elastic modulus were analysed. As the test results show as follow. With the increase of the reaction rate, the ultimate compressive strength of concrete was increasing and the peak strain of the concrete was a decreasing trend. Besides,the static modulus of elasticity of concrete dynamic elastic modulus ratio under uniaxial compression is suddenly reduced.