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

武汉理工大学学报-材料科学版(英文版), 2010, 25(3): 504-508. doi: 10.1007/s11595-010-0032-0

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory for Silicate Materials Science and Engineering of Education Ministry,Wuhan University of Technology,Wuhan 430070,China

2.Key Laboratory for Silicate Materials Science and Engineering of Education Ministry,Wuhan University of Technology,Wuhan 430070,China

3.China Construction Ready Mixed Concrete CO.LTD,Wuhan 430074,China

4.School of Science,Wuhan University of Technology,Wuhan 430070,China

5.Key Laboratory for Silicate Materials Science and Engineering of Education Ministry,Wuhan University of Technology,Wuhan 430070,China

基金项目: Guangxi Key Laboratory for the Advanced Materials and New Preparation Technology(063006-5C-13) National Natural Science Foundation of china(50508034) National Basic Research Program of China(2009CB623201)

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

HU Shuguang ^1, , WU Jing ^2, , YANG Wen ^3, , LU Linnu ^4, , HIE Yongjia ^5,

1.Key Laboratory for Silicate Materials Science and Engineering of Education Ministry,Wuhan University of Technology,Wuhan 430070,China

2.Key Laboratory for Silicate Materials Science and Engineering of Education Ministry,Wuhan University of Technology,Wuhan 430070,China

3.China Construction Ready Mixed Concrete CO.LTD,Wuhan 430074,China

4.School of Science,Wuhan University of Technology,Wuhan 430070,China

5.Key Laboratory for Silicate Materials Science and Engineering of Education Ministry,Wuhan University of Technology,Wuhan 430070,China

Keywords： 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 .

参考文献

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材料期刊网

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

参考文献