Chloride ion ingress distribution within an alternate wetting-drying marine environment area  

作　　者：XU Chen LI ZhiYuan JIN WeiLiang ZHANG Yi YAO ChangJian 

机构地区：[1]Department of Civil Engineering,Zhejiang University,Hangzhou 310058,China

出　　处：《Science China(Technological Sciences)》2012年第4期970-976,共7页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50920105806);the National Science and Technology Support Project (Grant Nos. 2006BAJ03A04, 2006BAJ03A02)

摘　　要：Concrete structures in an alternate wetting-drying area often suffer from severe chloride ion ingress more than those in other areas. Field tests of marine structures were conducted, and chloride concentration is found to reach a maximum value at a certain elevation. The surface concentration and diffusion coefficient of chloride ions at different elevations exhibit Gaussian unimodal curve distributions. Using the chloride ion unsaturated permeability model, the distribution regularity mechanism is analyzed. Finally, an improved indoor accelerated simulation experiment is proposed to simulate the rules governing chloride ion ingress into concrete structures in an alternate wetting-drying area.

关 键 词：concrete DURABILITY CHLORIDE 

分 类 号：TQ222.423[化学工程—有机化工] P75[天文地球—海洋科学]