摘要
干湿循环是导致自然气候环境条件中钢筋混凝土结构耐久性劣化最主要的影响因素之一。本文采用喷淋和灯照的方法对干湿循环现象进行了模拟,同时进行了3种干湿循环制度条件下的氯盐侵蚀混凝土内钢筋的腐蚀速度的实验研究和理论分析,探讨了干湿循环状态对混凝土内钢筋腐蚀加速效应的机理,以及不同干湿循环制度对混凝土内钢筋腐蚀速度的加速效应。
Wet-dry cycling condition is one of the most primary factors leading to the durability deterioration of reinforced concrete structures in the natural climate. In this paper water spraying and light shining were used alternately to simulate such phenomenon, and rebar＇s corrosion rate in chloride contaminated concrete under three conditions, such as wet-dry cycling, long time submerging, long time natural climate exposing, were compared through experimental studies and theoretical analysis. Mechanism and elementary accelerated effects of rebar＇s corrosion exacerbation under wet-dry cycling condition are drawn.
出处
《四川建筑科学研究》
北大核心
2005年第5期108-111,共4页
Sichuan Building Science
基金
中国矿业大学青年科研基金资助项目(OB4455)
关键词
干湿循环
混凝土
钢筋
腐蚀速度
wet-dry cycling
concrete
rebar
corrosion rate
