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大气环境条件下的混凝土结构、水工混凝土结构和地下混凝土结构的碳化过程存在差异,其原因在于环境相对湿度对混凝土碳化过程的影响。本文总结和分析了环境相对湿度对混凝土孔隙饱和度、混凝土的CO2扩散系数、碳化化学反应和混凝土碳化评估方法四个方面的影响,对环境相对湿度与混凝土孔隙饱和度和混凝土的CO2扩散系数的关系模型进行了说明。最后对考虑环境相对湿度的混凝土碳化预测模型进行了综述,在工程应用时,可以根据工程条件选择合适的混凝土碳化模型对不同环境相对湿度条件下混凝土的碳化深度进行预测和分析。
Atmospheric conditions of concrete structures, hydraulic concrete structures and underground concrete structures of carbonation process differences, the reason is that the relative humidity of the environment on the concrete carbonization process. This paper summarizes and analyzes the effect of relative humidity on four aspects of concrete pore saturation, CO2 diffusion coefficient, carbonation chemical reaction and concrete carbonation assessment method. The influence of relative humidity on concrete relative humidity and concrete pore saturation and concrete CO2 diffusion coefficient Relationship model is described. Finally, the carbonation predicting model considering the relative humidity of the environment is reviewed. In engineering application, the concrete carbonation model can be selected according to the engineering conditions to predict and analyze the carbonation depth of the concrete under different relative humidity conditions.