Two-and Three-Dimensional Chloride Ingress into Fly Ash Concrete  

作　　者：张云升 

机构地区：[1]Jiangsu Key Laboratory for Construction Materials,Southeast University [2]College of Materials Science and Engineering,Southeast University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2011年第5期978-982,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Fundation of China (No.51178106);Open Program from Guangxi Key Laboratory of Disaster Prevention and Reduction (No.2008TMKF009);973 Program (No.2009CB623200);Program for New Century Excellent Talentsin University

摘　　要：2D,3D chloride ion concentration at the edge and corner zones were systematically investigated for fly ash concretes made with different cement replacement percentage by fly ash （0%,10%,20%,40%,60%）,water to binder ratios （0.3,0.35,0.4）,and curing ages （28 d,90 d）.An interaction effect caused by 2D and 3D diffusion could obviously be observed through the comparison with 1D testing results.In order to quantify the interaction effect,2D and 3D diffusion interaction coefficients was proposed in this paper.Finally,the changes of 2D and 3D interaction coefficients with the change in the free chloride ion concentration were given.The above research provide an insight into chloride ion attack on the edge and corner reinforcing bars of concrete structures in the field of civil engineering.2D,3D chloride ion concentration at the edge and corner zones were systematically investigated for fly ash concretes made with different cement replacement percentage by fly ash （0%,10%,20%,40%,60%）,water to binder ratios （0.3,0.35,0.4）,and curing ages （28 d,90 d）.An interaction effect caused by 2D and 3D diffusion could obviously be observed through the comparison with 1D testing results.In order to quantify the interaction effect,2D and 3D diffusion interaction coefficients was proposed in this paper.Finally,the changes of 2D and 3D interaction coefficients with the change in the free chloride ion concentration were given.The above research provide an insight into chloride ion attack on the edge and corner reinforcing bars of concrete structures in the field of civil engineering.

关 键 词：fly ash CONCRETE chlorides two and three dimension ingress 

分 类 号：TU528[建筑科学—建筑技术科学]