摘要
[摘要]通过对比恒电压和变电压非稳态快速电迁移（RCM）测试的2种常用试验方法，明确了2种方法在试验过程中存在的差异。并利用这2种试验方法研究了不同类型混凝土的氯离子扩散系数变化规律，发现由2种方法得到的氯离子扩散系数随龄期衰减的规律均可用幂函数关系进行描述。通过相关性研究，发现这2种试验方法测试结果为线性相关，且变电压RCM测试结果是恒电压RCM测试结果的1．27—1．30倍。
By comparing the two common test methods of constant voltage RCM and variable vohage RCM, their differences during the testing procedure were identified. Using these two testing methods, the change laws of diffusion coefficient for chloride ion in different types concrete was studied. It was found that the attenuation of the diffusion coefficients with the concrete age obtained from both methods could be described by a power function. Study on the relationship between the results from the two testing methods show that they are in linear correlation and the result from variable voltage RCM is 1.27 - 1.32 times of that from constant voltage RCM.
出处
《施工技术》
CAS
北大核心
2013年第18期58-61,共4页
Construction Technology
基金
国家科技支撑计划项目资助(2011BAG07B04)
关键词
混凝土
氯离子
扩散系数
衰减系数
试验
concrete
chloride ion
diffusion coefficient
attenuation coefficient
testing
