水利学报2012，Vol.43Issue(6)：667-674,8.
饱和混凝土有效模量及有效抗拉强度研究
Research on the effective modulus and tensile strength of saturated concrete
摘要
Abstract
The existence of pore water has great influence on the mechanical properties of concrete, such as effective elastic modulus and strength, et al. Based on the three-phase sphere model, the quantitative relationship between the bulk modulus of saturated concrete and porosity was derived. The effective elastic modulus and Poisson＇s ratio of saturated wet concrete were deduced without considering the shear capacity of the pore water. According to the maximum tensile stress failure criterion, the quantitative relationship be- tween porosity and effective tensile strength and tensile peak-strain of saturated concrete were presented in this paper. Theoretical analysis results agree well with Yaman＇s experimental results, which demonstrate that the present method could be used to predict the elastic modulus of saturated concrete. Besides, it is found from the analysis results that the presence of pore water make the effective elastic modulus and ten- sile strength of saturated concrete improved compared with dry concrete.关键词
饱和混凝土/孔隙水/孔隙率/有效模量/有效抗拉强度/峰值应变Key words
Saturated concrete/pore water/porosity/effective modulus/effective tensile strength/peakstrain分类
建筑与水利引用本文复制引用
杜修力,金浏..饱和混凝土有效模量及有效抗拉强度研究[J].水利学报,2012,43(6):667-674,8.基金项目
973计划项目 （）
国家自然科学基金重点项目（90715041 （）
50838001） （）
北京工业大学博士生创新基金 （）
