活性粉末混凝土损伤后的抗氯离子渗透性能研究

Resistance to chloride ion penetration of reactive powder concrete after injury

通过对钢纤维体积含量为0、2%的两种活性粉末混凝土试件分别加载至其峰值荷载的0、60%、70%、80%的压力值来模拟不同程度的损伤,得到了试件在不同加载程度后加载度与基频振动频率之间的关系曲线,然后用快速氯离子迁移系数法测得了不同加载程度试件在受压损伤后的氯离子迁移系数,得到了试件的氯离子迁移系数与加载度的关系曲线,对得到的关系曲线分别进行了方程拟合,并对试验结果进行了分析和研究。

Two kinds of reactive powder concrete specimens with steel fiber volume content 0 and 2% were loaded to the pressure of 0,60%, 70%, 80% of the peak load to simulate different degrees of injury, the relationship curve between the load level and fundamental frequencies of specimens loaded at different extent has been found, then use the rapid chloride migration （RCM） method to measure the chloride migration coefficient of specimens, obtained the relationship curve between load level and chloride migration coefficient of the specimens, fitted the equa- tion of the obtained curve respectively and the experimental results were analyzed and studied.