EQUIVALENT MODEL OF EXPANSION OF CEMENT MORTAR UNDER SULPHATE EROSION  

作　　者：Jue Zhu Minqiang Jiang Jiankang Chen 

机构地区：[1]Mechanics and Materials Science Research Center, Ningbo University, Ningbo 315211, China [2]State Key Laboratory of Nonlinear Mechanics （LNM）, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Acta Mechanica Solida Sinica》2008年第4期327-332,共6页固体力学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.10572064);the National Basic Research Program of China(973 Program,2009CD623203);K.C.Wong Magna Fund in Ningbo University;the Natural Science Foundation of Zhejiang Province(No.Y107780).

摘　　要：The expansion property of cement mortar under the attack of sulfate ions is studied by experimental and theoretical methods. First, cement mortars are fabricated with the ratio of water to cement of 0.4, 0.6, and 0.8. Secondly, the expansion of specimen immerged in sulphate solution is measured at different times. Thirdly, a theoretical model of expansion of cement mortar under sulphate erosion is suggested by virtue of represent volume element method. In this model, the damage evolution due to the interaction between delayed ettringite and cement mortar is taken into account. Finally, the numerical calculation is results indicate that the model perfectly describes performed. The numerical and experimental the expansion of the cement mortar.The expansion property of cement mortar under the attack of sulfate ions is studied by experimental and theoretical methods. First, cement mortars are fabricated with the ratio of water to cement of 0.4, 0.6, and 0.8. Secondly, the expansion of specimen immerged in sulphate solution is measured at different times. Thirdly, a theoretical model of expansion of cement mortar under sulphate erosion is suggested by virtue of represent volume element method. In this model, the damage evolution due to the interaction between delayed ettringite and cement mortar is taken into account. Finally, the numerical calculation is results indicate that the model perfectly describes performed. The numerical and experimental the expansion of the cement mortar.

关 键 词：size effect MICROVOIDS EXPANSION sodium sulfate attack 

分 类 号：O34[理学—固体力学]