Analysis of Interf acial Zone Properties and Permeability of Concrete in Underground Structure  

作　　者：马保国 

机构地区：[1]Key Laboratory for Silicate Materials Science Engineering (Ministry of Education) Wuhan University of Technology, Wuhan 430070, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2006年第z1期31-34,共4页武汉理工大学学报（材料科学英文版）

摘　　要：Chloride diffusion coefficient and water penetration depth of 3 types concrete were studied. The experimental results show that the concrete permeability decreases itself in the order as follow: pure portland cement concrete(CO), concrete added with fly ash(C1), concrete added with both fly ash and silica fume(C2). SEM and microhardness analyses show that the properties of interfacial zone are significantly influenced by silica fume. With the improvement of interfacial zone properties, the permeability especially the Chloride ion diffusivity of concrete significantly decreases.Chloride diffusion coefficient and water penetration depth of 3 types concrete were studied. The experimental results show that the concrete permeability decreases itself in the order as follow: pure portland cement concrete(CO), concrete added with fly ash(C1), concrete added with both fly ash and silica fume(C2). SEM and microhardness analyses show that the properties of interfacial zone are significantly influenced by silica fume. With the improvement of interfacial zone properties, the permeability especially the Chloride ion diffusivity of concrete significantly decreases.

关 键 词：underground structure water permeability ionic diffusivity Interfacial zone Properties 

分 类 号：TU528[建筑科学—建筑技术科学]