混凝土中钢筋腐蚀过程的温湿度综合效应  

Comprehensive Effects of Temperature and Relative Humidity on Rebar Corrosion in Concrete

作　　者：姬永生[1,2] 徐从宇[2] 王磊[2] 申建立[2] 张博雅[2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221008

出　　处：《土木建筑与环境工程》2012年第1期12-16,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金资助项目(51178455)

摘　　要：环境的温度和相对湿度是影响混凝土中钢筋锈蚀速度的重要因素,这2个因素对混凝土中钢筋的腐蚀电流强度的影响并不是孤立的,而是互相交织在一起彼此产生影响的。通过试验研究了温湿度共同作用下混凝土中钢筋腐蚀速度的变化规律。研究表明,温度愈高,钢筋的腐蚀电流强度达到最大峰值时所对应的相对湿度愈大;相对湿度不同,温度升高对钢筋的腐蚀电流强度提高的幅度也不同。The corrosion rate of steel in concrete is highly dependent on the heterogeneous structure of the concrete and the environmental exposure conditions.Temperature and relative humidity are two important environmental factors that simultaneously influence the corrosion process and cannot be separated or isolated from each other.The interaction of temperature and relative humidity for characterizing the corrosion rate has been sufficiently studied.The resules show that the higher the temperature is,the greater the relative humidity is when rebar corrosion rate reaches the max,and as to different relative humidity,the increasing extent of rebar corrosion rate with rise in temperature is different.

关 键 词：温度 相对湿度 孔隙水饱和度 钢筋腐蚀速度 

分 类 号：TU352.3[建筑科学—结构工程]