Modeling of chloride transport coupled with enhanced moisture conductivity in concrete exposed to marine environment
Modeling of chloride transport coupled with enhanced moisture conductivity in concrete exposed to marine environment
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DOI：
10.1016/j.cemconres.2009.01.001
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发表时间：
2009-04-01
影响因子：
11.4
通讯作者：
Ishida, Tetsuya
中科院分区：
文献类型：
--
作者：
Iqbal, Prince O'Neill;Ishida, Tetsuya
本研究针对海洋环境荷载作用下混凝土的氯离子渗透进行模拟。对水分迁移模型进行了改进，以模拟长期暴露于干燥条件下浸没湿润条件下的吸附通量。根据微孔结构的性质，通过模拟不同多孔网络（致密和粗糙）对外部环境反应的敏感性，修改多孔介质中流动的非理想粘度。通过在暴露表面施加液压，模拟由于润湿和干燥循环暴露而产生的强吸附通量。通过耦合增强的水分传导模型和氯离子输运模型，对氯离子剖面进行了模拟。(C)2009爱思唯尔有限公司保留所有权利。
In this research, the chloride penetration in concrete is modeled under marine environment loadings. Moisture migration model is enhanced to simulate the sorption flux under submerged wetting after long exposure to drying. The non-ideal viscosity of flow in the porous media is modified according to the nature of micro-pore structure by modeling the sensitivity of different porous networks (dense and coarse) to react towards the external environment The strong sorption flux generated as a result of wetting and drying cyclic exposure is modeled by applying hydraulic pressure at the exposed surface. Chloride profiles are then simulated by coupling the enhanced moisture conductivity model with chloride transport model. (C) 2009 Elsevier Ltd. All rights reserved.