Experimental and numerical study on chloride transport in cement mortar during drying process
作者： Kaiyue Zhao , Yun Qiao , Peng Zhang , Jiuwen Bao , Yupeng Tian
DOI: 10.1016/J.CONBUILDMAT.2020.119655
关键词:
摘要: Abstract The evaporation of water from chloride-contaminated concrete during drying process causes reverse convection chloride ions, resulting in ions to accumulate on the surface, thus affecting durability and service life. In this contribution, pre-dried treatment, capillary absorption test, free diffusion test were carried out experimentally investigate influence transport. RCM isothermal adsorption desorption constant permeability used determine simulation parameters, allowing an accurate experiment results. Chloride transport was dominated by inward whereas migration affected coupling effect outward convection. shorter days led a more prominent coefficients varied with days, water-to-cement-ratio type best resistance coming specimens lower days. numerical results agreed fairly well experimental obtained test.
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