CAJ | 학술논문

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。
기우이양화탄기체재혼응토중적확산이론화혼응토탄화궤리，종합분석영향혼응토탄화심도적인소，추도출영향혼응토탄화심도적주요인소여혼응토재료인소、배경인소、탄화시간인소급혼응토탄화위치인소여혼응토탄화심도적정량관계，제출혼응토결구탄화심도예측모형。재차기출상，진일보고필혼응토응력상태인소，제출예응력혼응토적탄화심도예측모형。병여다조시험수거화이유탄화심도예측모형진행대비연구，결과표명：본문제출적혼응토화예응력혼응토결구탄화심도예측모형비현유모형경가문합시험결과，위탄화배경하혼응토화예응력혼응토결구적탄화내구성수명예측제공료유력공구。
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 carbona-tion 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 car-bonation depth of reinforced and prestressed concrete structures agree well with the experimental data than the ex-isting models.The proposed models provide useful tools for prediction of durability life under carbonation envi-ronment.