【摘要】 采用MTS液压伺服系统对C30、C40两种混凝土进行了不同应变速率下的单轴抗拉试验。通过试验,系统研究了混凝土的弹性模量和抗拉强度,在不同的应变速率下的影响,并给出了弹性模量和抗拉强度随着应变速率的变化规律。通过试验结果可以得出:C30和C40两种混凝土的抗拉强度和弹性模量,随着应变速率的提高呈现增长的趋势,但增长的幅度差别较大。更多还原

【Abstract】 The uniaxial tensile test of two kinds of concrete(C30,C40) under the different strain rates is carried on the servo fatigue machine.The impacts of strain rates on concrete strength and elastic modulus is studied systematically,the change of the tensile strength and elastic modulus under the different stain rates are analyzed.The results show that: the tensile strength and elastic modulus of both kinds of concrete increases as the strain rate growing.But the growth rate varies greatly.更多还原