【摘要】 对经冻融后的水泥砂浆试件进行单轴动态压缩试验,研究应变速率、冻融对其应力应变曲线、抗压强度和弹性模量的影响。研究结果表明水泥砂浆试件经过冻融后,其抗压强度和弹性模量均随着应变速率的增加而增加。水泥砂浆试件经过冻融后强度会降低,但强度对应变率的敏感性会增加。更多还原

【Abstract】 Uniaxial dynamic compression tests were performed on cement mortar specimens after freezing-thawing.The effects of strain rate,freezing-thawing on stress-strain curve,compressive strength and elastic modulus of cement mortar specimen were studied.The results show that the compressive strength and elastic modulus of cement mortar specimen increase with increasing strain rate after freezing-thawing.The strength of cement mortar specimen will decrease after freezing-thawing,but the sensitivity of the strength to strain rate will increase.更多还原