混凝土抗渗性能研究的现状与进展  

Current situation and development tendency of concrete permeability study

作　　者：易成[1] 谢和平[1] 孙华飞[1] 高伟[1] 

机构地区：[1]中国矿业大学北京校区,北京100083

出　　处：《混凝土》2003年第2期7-11,34,共6页Concrete

基　　金：国家自然科学基金(19702021);2000年度高等院校博士点学科专项科研基金;广州市建委科学研究基金资助项目

摘　　要：　阐述了关注混凝土抗渗性能的重要性,分析了影响混凝土抗渗性能的各个方面和主要影响因素,并且针对这些影响因素,介绍了国内外研究现状及目前获得的一些重要结论,对今后混凝土抗渗性能研究的发展方向也进行了探讨。认为水渗透性试验、氯化物渗透性试验、空气渗透性测试各适合于不同的场合和情况,不存在某一种强于另一种的问题。提出混凝土的抗渗研究应该更多地关注混凝土在服役环境中由于荷载、裂纹扩展等导致的抗渗性能劣化的问题。在荷载作用对混凝土抗渗性能的影响问题上,目前不同研究人员的研究结论之所以相差悬殊,试验条件不同是一个主要原因。In this paper,the main influence factors of concrete permeability are analyzed.On these factors,the current research situation at home and abroad and the main conclusions from the research are introduced.Meanwhile,the development tendency of research is discussed.It pointed out that,the water permeability test,the chloride permeability test and the air permeability test are suit for different situation and they can not be replaced each other.It is proposed out that,in the research of concrete permeability,more attention should be paid on the deterioration of permeability due to loading,crack and microcrack propagation.Besides,it pointed out that,in the research of the influence of loading on the concrete permeability,the main cause lead to different conclusions by different researchers was that the test condition is different.

关 键 词：混凝土 抗渗性能 耐久性 微裂纹 渗透 荷载 

分 类 号：TU528.32[建筑科学—建筑技术科学]