MICROMECHANICS MODELING THE SOLUTE DIFFUSION IN UNSATURATED HARDENED CEMENT PASTE

摘要：

　　Based on the characterization of microstructure morphology and local physical properties, a micromechanics model is proposed to estimate the solute diffusion coefficient of the unsaturated hardened cement paste.The water films adsorbed on the gas-pore wall interface as well as the connectivity of the capillary pore water are accounted for in the micromechanics model.It is shown that the evolution of solute diffusion coefficient exhibits notable nonlinear decrease with saturation degree.At high saturation degree (Sr ≥ 80%), the drastic decrease of the solute diffusion with decreasing saturation degree is due to the draining of the capillary pore water.

作者: Rongwei Yang Eric Lemarchand Teddy Fen-Chong Kefei Li

作者单位: Civil Engineering Department,Tsinghua University,Beijing,P.R.China;Université Paris-Est,Laboratoire Université Paris-Est,Laboratoire Navier,Ecole des Ponts ParisTech,IFSTTAR,CNRS,F-77455,Marne-la-Vall Civil Engineering Department,Tsinghua University,Beijing,P.R.China

会议类型: 国际会议

会议名称: The Fourth RILEM International Symposium on Concrete Modelling (CONMOD 2014)(第四届RILEM混凝土材料建模国际会议)

会议地点: 北京

会议语种:英文

页码: 374-385

在线出版日期: 2014-10-12（万方平台首次上网日期，不代表论文的发表时间）