摘   要：试验研究了干湿循环机制下碳酸盐对混凝土的腐蚀规律试验，通过分析碳化深度、抗压强度及混凝土质量的变化，讨论了碳酸盐对混凝土碳化的腐蚀影响，并对混凝土碳化程度评定提出了建议。研究结果表明，混凝土的碳化速度在NaHCO₃溶液的作用下加快。随着干湿循环次数的增加，NaHCO₃溶液浓度从0.3%增加到0.5%时，混凝土碳化深度明显增加；混凝土的抗压强度在NaHCO₃溶液的作用下影响较大。结合在失效干湿循环次数时，混凝土试块的质量损失率的统计，其平均质量损失率为6.24%，可以参照混凝土试块的质量损失率对混凝土试块是否失效进行初步的判断。

Abstract: Carbonization is an important grounds for assessing the durability of concrete structures. The corrosion experiment of carbonate on concrete under the wet-dry cycles is carried out. By analyzing the variety  of carbonation depth, the compressive strength and the quality of concrete, the influence of carbonates on corrosion of concrete is studied, and the carbonation of concrete is evaluated and some suggestions are proposed. The results show that the carbonation depth increases markedly under the role of NaHCO₃ solution. With the increase of wet-dry cycles, the concentration of NaHCO₃ solution is from 0.3% to 0.5%, while the carbonation depth is obviously increased. The compressive strength of concrete is greatly affected by the NaHCO₃ solution. The average mass loss rate of the concrete sample is 6.24% under the conditions of failure wet-dry cycles which can refer to the mass of the concrete block. The mass loss rate can provide reference to preliminary judgment of concrete failed.