摘要
钢筋混凝土常作为负荷结构用于道路、桥梁、隧道等工程中,然而由于氯离子的侵蚀,导致混凝土过早劣化。在实际环境中,混凝土构件在遭受氯离子侵蚀时,常要受到荷载和环境因素的影响。基于此,总结了近年来国内外荷载(持续荷载、疲劳荷载)和环境因素(干湿循环、冻融循环、碳化、其他腐蚀介质)共同作用下混凝土氯离子渗透性的研究进展,并评述了他们研究中存在的问题及不足,为今后的进一步研究提出一些建议。
Reinforced concrete is often used as a load structure of roads, bridges, tunnels and other projects, however, due to the erosion of chloride ions, resulting in premature deterioration of concrete. Concrete structures when subjected to chloride ion penetration, often have to be affected by load and environmental factors.Based on it,this paper summarizes the coupling of load（ continuous loads,fatigue loads） and environmental factors （ freeze - thaw cycles, wet and dry cycle, carbonation, other corrosive media） on chloride ion permeabil- ity of concretedomestic and aboard in recent years, reviewed the problems and deficiencies in their studies, and provide some suggestions for further research in the future.
出处
《混凝土》
CAS
北大核心
2015年第2期29-32,共4页
Concrete
基金
国家自然科学基金项目(51308062)
中国博士后科学基金项目(2013M540726)
"十二五"国家科技支撑项目(2011BAE27B04)
关键词
荷载
干湿循环
冻融循环
碳化
loading
wet and dry cycle
freeze - thaw cycles
carbonation
