混凝土中水的存在为氯离子的渗入、混凝土的冻融和碳化提供了便利,促成了钢筋的腐蚀。为获得混凝土内钢筋表面的含水率预计模型。文章研究了混凝土中的水,包括拌合水、水化水、泌出水、养护水,通过理论推导获得了不同环境条件下钢筋表面含水率的预计模型,为建立混凝土中的钢筋腐蚀速率模型提供了依据。 The presence of water in concrete provides for the infiltration of chloride ions, the freeze-thaw and carbonization of concrete, and the corrosion of reinforcing steel. In order to obtain the prediction model of the water content of the surface of rebar in concrete. In this paper, the water in concrete, including mixing water, hydration water, excreted water and conservation water, is studied in this paper. The predicted model of surface water content under different environmental conditions is derived theoretically, which provides a model for establishing the model of corrosion rate of steel bar in concrete The basis.