中文摘要：

基于二氧化碳气体在混凝土中的扩散理论和混凝土碳化机理,综合分析影响混凝土碳化深度的因素,推导出影响混凝土碳化深度的主要因素如混凝土材料因素、环境因素、碳化时间因素及混凝土碳化位置因素与混凝土碳化深度的定量关系,提出混凝土结构碳化深度预测模型。在此基础上,进一步考虑混凝土应力状态因素,提出预应力混凝土的碳化深度预测模型。并与多组试验数据和已有碳化深度预测模型进行对比研究,结果表明：本文提出的混凝土和预应力混凝土结构碳化深度预测模型比现有模型更加吻合试验结果,为碳化环境下混凝土和预应力混凝土结构的碳化耐久性寿命预测提供了有力工具。

英文摘要：

Based on the gas diffusion theory within concrete and concrete carbonation mechanism, the influence of factors including concrete material, environment variables, carbonation time and location on concrete carbonation depth was analyzed, and the quantitative relationship between the factors above and the concrete carbonation depth was derived. A prediction model for carbonation depth of reinforced concrete structures was then proposed. Based on this, taking into account the effect of stress state of concrete, a prediction model for the carbonation depth of prestressed concrete structures was then carried out. The comparisons between experimental data and the existing prediction models of carbonation depth were conducted, and it is shown that the proposed models for carbonation depth of reinforced and prestressed concrete structures agree well with the experimental data than the existing models. The proposed models provide useful tools for prediction of durability life under carbonation environment.