EXPERIMENTAL AND THEORETICAL STUDY OF CHLORIDE ION TRANSPORT IN CONCRETE UNDER CYCLIC WETTING AND DRYING

摘要：

A series of cyclic test were performed to obtain an understanding of the physicalmechanisms causing the accumulation of chloride in the interior pores of concrete during thedrying and wetting phases of the cycle. The research shows that the rate of chloride transportin concrete under wet and dry cycles is rapider than that in saturated concrete. The resultsshow that chloride ions are carded by water into the concrete under wet and dry cycles,instead of by diffusion. Under wet and dry cycles,the transport rate of the chloride ionsdepends on the duration of the wetting and the drying phases,chloride concentration at thesurface of concrete,the number of cycles,and the difference in moisture contents betweenthat at the end of wetting phase and that of drying phase.

关键词： chloride ingress concrete wet and dry cycle model

作者: Yong-sheng Ji Ying-shu Yuan Zhongchao Tan Qingqian Meng

作者单位: School of Architecture & Civil Engineering,China University of Mining and Technology,Xuzhou,Jiangsu, School of Architecture & Civil Engineering,China University of Mining and Technology,Xuzhou,Jiangsu, Department of Mechanical and Manufacturing Engineering,Schulich School of Engineering,University of

会议类型: 国际会议

会议名称: The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 605-614

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）