Most reinforced concrete structures are under the influence of environmental conditions, such as temperature fluctuations, moisture and chloride variations simultaneously. Thus, the moisture transfer in concrete is driven by the moisture gradient as well as the temperature gradient. Similarly, the ionic transfer in concrete is driven by the concentration gradient of the ion as well as the temperature gradient. This paper developed an analytical solution that can be used for the moisture or the chloride transport in concrete considering the effect of temperature gradient. The effect of mass transfer on the thermal conduction was not considered, so the problem is simplified as a one-way coupled problem. The analytical model was validated by using two CASE studies, in which realistic material parameters of concrete were used, the parameters were obtained from experiments in the literature. The comparisons between analytical results and experimental results showed good agreement. It indicated that the present model can successfully characterize the effect of temperature gradient on moisture transfer and the effect of temperature gradient on chloride transport in concrete.

大多数钢筋混凝土结构受环境条件的影响，例如温度波动，水分和氯化物变化同时发生。因此，混凝土中的水分传递受水分梯度和温度梯度的驱动。类似地，混凝土中的离子转移是由离子的浓度梯度和温度梯度驱动的。考虑到温度梯度的影响，本文开发了一种可用于混凝土中水分或氯化物传输的分析解决方案。没有考虑传质对热传导的影响，因此该问题被简化为单向耦合问题。通过使用两个CASE研究验证了该分析模型，其中使用了实际的混凝土材料参数，这些参数是从文献中的实验中获得的。分析结果和实验结果之间的比较显示出很好的一致性。结果表明，该模型可以成功地表征温度梯度对水分传递的影响以及温度梯度对氯离子在混凝土中迁移的影响。