Relationship Between Autogenous Deformation and Internal Relative Humidity of High-strength Expansive Concrete  

作　　者：胡曙光 吴静 

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

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第3期504-508,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 Foundation of china (No. 50508034);Guangxi Key Laboratory for the Advanced Materials and New Preparation Technology(No. 063006-5C-13);China,and National Basic Research Programof China(No.2009CB623201)

摘　　要：The relationship between autogenous deformation and internal relative humidity（IRH） of high-strength concrete and high-strength expansive concrete were investigated.The experimental results indicate that,there exists a good linear relationship between autogenous shrinkage and IRH of high-strength concrete but a nonlinear relationship between autogenous deformation and IRH of high-strength expansive concrete with expansive agent.The new autogenous deformation curve can be obtained by transforming the autogenous deformation data of high-strength expansive concrete,and there exists linear relationship between the autogenous deformation and IRH.The concept of ＂critical internal relative humidity＂ was proposed,which is defined as the value of IRH when autogenous deformation is zero,to effectively reflect the autogenous deformation characteristic of expansive concrete.The relationship between autogenous deformation and internal relative humidity（IRH） of high-strength concrete and high-strength expansive concrete were investigated.The experimental results indicate that,there exists a good linear relationship between autogenous shrinkage and IRH of high-strength concrete but a nonlinear relationship between autogenous deformation and IRH of high-strength expansive concrete with expansive agent.The new autogenous deformation curve can be obtained by transforming the autogenous deformation data of high-strength expansive concrete,and there exists linear relationship between the autogenous deformation and IRH.The concept of ＂critical internal relative humidity＂ was proposed,which is defined as the value of IRH when autogenous deformation is zero,to effectively reflect the autogenous deformation characteristic of expansive concrete.

关 键 词：expansive concrete autogenous deformation internal relative humidity RELATIONSHIP 

分 类 号：TU528[建筑科学—建筑技术科学]