Modeling the Synergetic Effect of Various Factors on Chloride Transport in Nonsaturated Concrete
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2016年第6期
论文作者：张小刚 LU Zhaohui 王淑萍 ZHOU Tianhai XING Feng
文章页码：1336 - 1346
摘 要：Diffusion has been systematically described as the main mechanism of chloride transport in reinforced concrete（RC） structure, especially when the concrete is in a saturated state. However, the single mechanism of diffusion is not able to describe the actual chloride ingress in the nonsaturated concrete. Instead, it is dominated by the interaction of diffusion and convection. With the synergetic effects of various factors taken into account, this study aimed to modify and develop an analytical convection- diffusion coupling model for chloride transport in nonsaturated concrete. The model was verified by simulation of laboratory tests and field measurement. The results of comparison study demonstrate that the analytical model developed in this study is efficient and accurate in predicting the chloride profiles in the nonsaturated concrete.
张小刚1，LU Zhaohui2，王淑萍3，ZHOU Tianhai1，XING Feng1
1. Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering,College of Civil Engineering,Shenzhen University2. National Engineering Laboratory for High Speed Railway Construction,School of Civil Engineering,Central South University3. College of Materials Science and Engineering,Chongqing University
摘 要：Diffusion has been systematically described as the main mechanism of chloride transport in reinforced concrete（RC） structure, especially when the concrete is in a saturated state. However, the single mechanism of diffusion is not able to describe the actual chloride ingress in the nonsaturated concrete. Instead, it is dominated by the interaction of diffusion and convection. With the synergetic effects of various factors taken into account, this study aimed to modify and develop an analytical convection- diffusion coupling model for chloride transport in nonsaturated concrete. The model was verified by simulation of laboratory tests and field measurement. The results of comparison study demonstrate that the analytical model developed in this study is efficient and accurate in predicting the chloride profiles in the nonsaturated concrete.
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