摘要
混凝土碳化是研究混凝土结构耐久性的重要课题,目前的研究主要为碳化深度及对钢筋腐蚀影响等方面,忽略了碳化过程中吸收CO2的量。通过分析混凝土碳化机理,从建筑整体层面确定影响混凝土建筑碳化的主要因素,以实际建筑为样本,建立建筑全生命周期固碳模型,通过试验取样对模型结果验证,吻合性良好。在此基础上,将计算结果与材料生产过程中碳排放的进行比较,结果表明建筑使用年限内与全生命周期的固碳量分别相当于混凝土生产阶段碳排放的4.29%和43%。
Concrete carbonation is an important topic to study the durability of concrete structures. The current research is mainly focused on the depth of carbonation and the impact on the corrosion of steel bars, while ignoring the amount of CO2 absorbed during carbonization. By analyzing the carbonation mechanism of concrete, the main factors affecting the carbonization of concrete buildings are determined from the whole building. The actual building is taken as a sample to establish a carbon sequestration model for the whole life cycle of the building. The model results are verified by experimental sampling and the results are good. On this basis, the calculation results are compared with the carbon emissions in the material production process. The results show that the carbon sequestration in the life of the building and the whole life cycle is equivalent to 4.29% and 43% of the carbon emissions in the concrete production stage.
作者
李沛颖
石铁矛
王梓通
高健
LI Pei-ying;SHI Tie-mao;WANG Zi-tong;GAO Jian(Shenyang Jianzhu University,110168,Shenyang,China;Shenyang International Engineering Consulting Group Corporation,110014,Shenyang,China)
出处
《建筑技术》
2020年第3期351-353,共3页
Architecture Technology
基金
国家自然科学基金(51578344)
近零能耗建筑技术体系及关键技术开发(2017YFC0702600)
辽宁省重点研发基金(2017229003)。
关键词
混凝土碳化
建筑固碳
全生命周期
预测模型
concrete carbonization
building carbon sequestration
whole life cycle
prediction model
