硬化水泥浆体的弹性模量预测  

Prediction of Elastic Modulus of Hardened Cement Pastes

作　　者：吴浪[1] 宋固全[2] 雷斌[3] 

机构地区：[1]江西科技师范学院建筑工程学院 [2]南昌大学建筑工程学院 [3]南昌理工学院建筑工程学院

出　　处：《建筑材料学报》2011年第6期819-823,共5页Journal of Building Materials

基　　金：国家自然科学基金资助项目(50779044;50909049);江西省自然科学基金资助项目(2007GZW2470);江西科技支撑项目(2009BHB15600)

摘　　要：应用复合材料细观力学理论及三维微观水化模型,建立了描述硬化水泥浆体弹性力学性质的多相细观力学模型;将水泥浆体中的水化产物、未水化水泥颗粒和水(孔洞)分别视为基体、夹杂及等效介质,计算了水泥浆体在不同水灰比情况下的弹性力学性质随水化程度的演化.该模型所需要的参数为水泥浆体各相矿物组成含量及自身的弹性力学性质.通过与试验结果比较,证明了该模型可以用于预测水泥浆体的弹性力学性质.The theory of micro-mechanics of composite materials and three dimensional microstructure model were used to develop a multi-phase model of micro-mechanics which is capable of simulating the elastic properties of cement pastes.The hydrated products,unhydrated cement and water(in capillary pores) in the cement paste are seen as matrix,inclusion and equivalent medium respectively.The evolution of elastic properties in the hydration process was calculated at different water-cement ratio.The parameters of the proposed model are the mineral composition and the intrinsic properties of the constituent components of cement pastes.Compared with the experimental results,this model can be used to predict the elastic properties of cement paste.

关 键 词：细观力学 水泥浆体 弹性模量 

分 类 号：TQ172.1[化学工程—水泥工业]