电渗结合透水模板成型混凝土表观质量试验  

Experimental Study on Surface of Concrete Poured by Electro-osmosis in Combination with Permeable Formwork Method

作　　者：田正宏[1,2] 毛龙[2] 彭志海[3] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [3]中国水利水电第七工程局有限公司,四川成都610081

出　　处：《建筑材料学报》2014年第6期1001-1008,共8页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51279054)

摘　　要：基于电渗均匀快速的排水特性,建立了电渗滤水试验模型,阐述电压加载初始时点、电压值、电渗历时及电极间距对混凝土成型效果的影响,并研究了结合透水模板垫层来改善电渗混凝土成型外观的方法.结果表明:电渗结合透水模板工艺排水可形成致密无孔洞混凝土表面,显著降低混凝土渗水透气性能,且可提高混凝土表面强度.Analytical model of electro-osmotic dewatering was established based on its drainage characteris- tic and electrical parameter which influence concrete appearance such as the timestamp of on-load voltage, voltage value, duration an the distance between electrodes. Furthermore, CPF （controlled permeable formwork） was also adopted to improve the surface quality of concrete. The test results show that electro- osmotic dewatering combir ed with CPF technology could produce the high-density concrete surface free of the voids and pits, which makes its permeability coefficient reduced and strength enhanced.

关 键 词：混凝土浇筑 电渗排水 透水模板 分析模型 外观质量 

分 类 号：TU528.01[建筑科学—建筑技术科学]