混凝土结构全寿命减碳技术研究进展
Research progress of life-cycle carbon emission reduction technologies for concrete structures
赵羽习 1张大伟 1夏晋 1孟涛 1曾强 1弓扶元1
作者信息
- 1. 浙江大学建筑工程学院,浙江杭州 310058
- 折叠
摘要
混凝土结构应用广泛,但其在施工、服役和退役的全寿命周期均有较大量的碳排放,因此,混凝土结构全寿命减碳技术的研发与应用,对于推动建筑业低碳发展至关重要.从混凝土结构全寿命角度出发,将结构生命过程划分为服役前(包括材料制备和施工建造)、服役中(包括运营和维护)、服役后(包括拆除和回收)3个阶段,以全寿命周期总碳排放量和年均碳排放量为评价指标,分阶段探讨了混凝土结构减碳技术理念;提出了采用新型低碳胶凝材料、提升结构耐久性以及退役后建筑固废循环利用等方式实现混凝土结构全寿命减碳;总结了混凝土结构减碳设计理论的研究现状,建议通过多目标优化分析,实现可靠性、经济性和碳排放的平衡设计;对混凝土结构全寿命减碳设计下一步研究和实施的方向进行了展望.
Abstract
Concrete structures are the most common structures.However,the carbon emissions during the entire life of concrete structures have reached a non-negligible level.Developing the carbon emission reduction technologies(CERT)for concrete structures is essential to promote green development of construction industries.In terms of structural life-cycle,the service is divided into three stages,namely before the service(material preparation and construction),during the service(operation and maintenance),and after the service(destruction and recycling).The total carbon emissions and the annual carbon emissions are proposed to describe the concept of carbon emission reduction.The research progress of CERT in each stage is presented,including applying novel low carbon cementitious materials,increasing the durability of concrete structures,and recycling the demolish waste.The design theory of life-cycle carbon emission reduction for concrete structures is also introduced,and a balanced design considering reliability,economy and carbon emission by multi-objective analysis is recommended.The future research and implementation of life-cycle carbon emission reduction for concrete structure is proposed.
关键词
混凝土结构/碳排放/全寿命周期/减碳技术/减碳设计Key words
concrete structure/carbon emission/life-cycle/carbon emission reduction technology/carbon emission reduction design引用本文复制引用
基金项目
浙江省高层次人才特殊支持计划(2021R52035)
出版年
2024
国家科技期刊平台
NSTL
万方数据