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本文从水泥材料碳汇发生原理、碳化影响因素、混凝土水泥碳汇、砂浆水泥碳汇与水泥窑灰碳汇等方面,综述水泥材料整个生命周期碳汇的相关研究。众多研究表明,水泥材料的碳化过程受水泥的材料因素和环境因素影响较大;混凝土在在建筑使用阶段的碳汇量核算方法主要通过碳化深度定量表达,而在拆毁和回收利用阶段的碳汇核算方法缺乏;砂浆水泥和水泥窑灰的碳化速度要高于混凝土,但其碳汇核算方法仍未建立。今后的研究应侧重以下几个方面:继续加强水泥材料碳汇影响因素及相应碳化参数的研究,从生命周期角度系统建立完整的水泥材料碳汇核算方法体系;精确核算中国乃至全球水泥材料年碳吸收量、碳汇累积量,并分析水泥材料碳汇在碳失汇中的贡献比例;从生态学和气候变化视角阐述水泥材料碳汇对城市碳循环的影响。
This paper summarizes the relevant research on the carbon sink throughout the life cycle of cement materials from the aspects of occurrence principle of carbon sink, influencing factors of carbonation, concrete cement carbon sink, mortar cement carbon sink and cement kiln ash carbon sink. Numerous studies show that the carbonation process of cement materials is greatly affected by the material factors and environmental factors of cement; the method of accounting for carbon sinks in the construction phase of concrete is mainly expressed by the depth of carbonization; while in the stage of demolition and recycling, There is a lack of accounting methods; mortar cement and cement kiln ash carbonation rate is higher than concrete, but its carbon accounting method has not been established. Future research should focus on the following aspects: Continue to strengthen the carbonaceous material impact factors and corresponding carbonization parameters of cement materials, from the life cycle point of view to establish a complete carbonaceous cement material accounting system; Accurate accounting of China and the world’s annual carbon materials, carbon Absorption and carbon sink, and analyzed the contributions of carbon sinks to carbon loss in cement materials. The impacts of carbon sinks on cement carbon cycle in cities were analyzed from the perspective of ecology and climate change.