硬化水泥石水渗透系数预测的解析法  

An analytical method for prediction of the water permeability of hardened cement paste

作　　者：周欣竹[1] 郑建军[1] 夏才安[1] 

机构地区：[1]浙江工业大学建筑工程学院,杭州310014

出　　处：《水力发电学报》2008年第4期116-120,共5页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(50578147);国家安全生产监督管理总局项目(06-170)

摘　　要：本文提出硬化水泥石水渗透系数预测的解析法。考虑到水泥石中毛细孔的尺寸和水渗透系数远大于胶孔,将硬化水泥石模拟成一种各向同性的两相复合材料,使得毛细孔和胶孔包含在不同的相中。然后根据一般有效介质理论,导出了硬化水泥石水渗透系数的解析解,并通过实验校核确定了该解析解中所包含的关键参数。最后,通过与文献中所报道的实验结果进行比较,证实了本文解析法的有效性。An analytical method for prediction of the water permeability of hardened cement paste is presented in this paper. Since capillary pores in cement paste have a considerably larger space and water permeability than gel pores, hardened cement paste is modeled as an isotropic two-phase composite material with capillary and gel pores included in two separated phases. Based on the general effective medium theory, an analytical solution is then derived for the water permeability of hardened cement paste. The key parameter involved in the analytical solution is determined by experimental calibration. Finally, the validity of the proposed analytical method is verified with the experimental results obtained from the literature.

关 键 词：水工材料 渗透系数 解析法 硬化水泥石 

分 类 号：TV432[水利工程—水工结构工程]