建筑混凝土全生命周期固碳能力计算方法  

A Computational Method for the Carbon Sequestration Capability of Building Concrete in the Whole Life Cycle

作　　者：石铁矛[1] 周诗文[2] 李绥[1] 付士磊[2] 徐东旭[2] 

机构地区：[1]沈阳建筑大学生态城镇化与绿色建筑研究中心,辽宁沈阳110168 [2]沈阳建筑大学建筑与规划学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2015年第5期829-837,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十二五科技支撑计划项目(2012BAJ15B00);沈阳市科技计划项目(F13-315-5-21)

摘　　要：目的提出城市建筑混凝土固碳能力计算方法,弥补城市建筑碳汇的缺失,为城市低碳规划提供新思路.方法基于建筑全生命周期模型,构建了建筑混凝土碳汇总体计算框架,提出建筑设计、使用、拆除和二次使用等不同阶段固碳能力的计算方法.结果混凝土的碳汇在建设阶段、使用阶段会发生,在拆除破碎及回收利用阶段,混凝土也能够吸收CO2.混凝土的碳化深度d可运用菲克第二定律(d=K t1/2)来进行计算.结论混凝土建筑碳汇的固碳能力计算方法有效可行,对于构建城市复合碳汇(自然碳汇+人工碳汇)系统,指导低碳城市规划研究具有重要意义.A computational method for the carbon sequestration capacity of urban construction concrete was proposed to make up the lack of the carbon sequestration and provide a newway for the urban low-carbon planning. Based on the entire life cycle model of construction,a computational framework for the carbon sequestration of building concrete was built. A general calculation method for the carbon sequestration capacity in different design stages,such as architectural design,use,removal and secondary use was obtained. It is found that the carbon sequestration in concrete occurs in the construction stage and the service stage. In the cracking demolition and recycling stage,concrete can also absorb CO2. Concrete carbonation depth d can be calculated by the Fick second law（ d = Kt^1 /2）. Conclusion is that the proposed computational method for the carbon sequestration capacity of building concrete is feasible and effective. It has important significance for making up the urban complex carbon sequestration（ natural carbon sinks and artificial carbon sequestration）system and planning the low-carbon urban.

关 键 词：建筑混凝土 碳汇量 生命周期 固碳能力 

分 类 号：TU984[建筑科学—城市规划与设计] X513[环境科学与工程—环境工程]