STOCHASTIC CHARACTERISTIC OF CHLORIDE IONS DISTRIBU-TION AND DIFFUSION IN EXISTING HYDRAULIC CONCRETE

摘要：

The hydraulic concrete structures under tidal environment bear types action ofnature environment including chloride invasion and tidal water scouring and loads and so on,so that it is difficult to imitate the concrete invasion under the natural environment by ageneral indoor experiment. But,it is a fact that the real chloride ions invasion depths ofexisting hydraulic concrete have reported the invasion characteristics including invasionspeed under the natural environment,and the invasion characteristics can be used as basicdates to study durability of existing hydraulic concrete structures under the environment. Bythe study background of estuary environment in the Qiantang River,based on the measureddata,the concrete chloride ions invasion depths and percentage composition of an actualhydraulic concrete member and chloride ions density of concrete surface are analysed,and thedistribution is fitted. Basis of the study above,the chloride diffusion coefficient of the existingconcrete under the tidal estuary environment is analysed in using the Fick diffusion law.

关键词： estuary environment hydraulic concrete chloride ions diffusion coefficient stochastic characteristic

作者: Jian-min Zhou Junzhi Zhang Jian-ze Wang Deyu Kong Haizhen Huang

作者单位: College of Architecture & Civil Engineering,Zhejiang University of Technology,Hangzhou 310032,PR Chi Management Bureau of Qiantang River,Hangzhou,310016,PR China

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: 261-266

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）