水泥混凝土抗盐冻性能试验研究

Experimental Study on Salt Freeze Resistance of Cement Concrete

基于水泥混凝土配合比设计的方法,通过弯拉强度和冻融循环试验,对不同冻融循环次数下,水泥混凝土试块的弯拉强度损失、质量损失、相对动弹模量进行了研究,并相应分析了混凝土的抗盐冻性能。试验研究结果表明:降低水灰比、粉煤灰掺入使水泥混凝土抗盐冻性能得到有效提高,引气剂加入使混凝土弯拉强度和抗盐冻性能均得到提高。

Based on the method of cement concrete mix design,the flexural tensile strength loss,mass loss and relative dynamic modulus of cement concrete test block under different freezing-thawing cycles were studied through flexural tensile strength and freezing-thawing cycle tests,and the salt-freezing resistance of concrete was analyzed accordingly.The experimental results show that the salt-freezing resistance of cement concrete is improved effectively by reducing the water-cement ratio and adding fly ash,and the flexure-tension strength and salt-freezing resistance of concrete are improved by adding air entraining agent.