摘要
为了促进建筑垃圾减量化与资源化,以湖南省为例,建立了结合经济与碳减排效益的动态物质流分析框架,定量分析了不同建筑寿命(短、中、长)及城市发展情景下湖南省(1990~2060年)建筑垃圾产生量及其组分的变化规律,并测算了不同资源化路线下碳排放量和生产成本,探索建筑垃圾高效资源化利用路线.研究结果表明:湖南省未来建筑垃圾产生量还将保持高速增长,2020~2060年建筑垃圾累计产量将达到11.6~50亿t,年建筑垃圾产量达到0.45~2亿t,其中,可利用的废砖瓦、废混凝土块等占比达到87%.同时利用再生骨料代替天然的砾石和砂,能减少19.8%的碳排放.
To promote the reduction and recycling of construction and demolition waste(C&D Waste),taking Hunan Province as an example,a dynamic material flow analysis framework combining economic benefits and carbon emission was established.The law of C&D Waste generation and its components,concerning different building life cycles(short,medium,long)and development scenarios from 1990 to 2060,was quantitatively analyzed.Moreover,carbon emissions and production costs under different recycling routes were measured to explore an efficient recycling route.The results indicate that the production of C&D Waste in Hunan Province will continue to grow rapidly in the future.From 2020 to 2060,the cumulative production of C&D Waste will reach 1.16~5billion tons,and the annual production of C&D Waste will reach 0.45~2 billion tons,among which the recycled components such as waste bricks and waste concrete blocks can account for 87%.Meanwhile,replacing natural gravel and sand with recycled aggregates can reduce carbon emissions by 19.8%.
作者
郑兆昱
邓鹏
黄靓
陈宇亮
阳栋
ZHENG Zhao-yu;DENG Peng;HUANG Liang;CHEN Yu-liang;YANG Dong(College of Civil Engineering,Hunan University,Changsha 410082,China;Key Laboratory of Building Safety and Energy Efficiency,Ministry of Education,Changsha 410082,China;Hunan Communication Research Institute Co.,Ltd,Changsha 410015,China;China Construction Fifth Engineering Division Co.,Ltd,Changsha 410004,China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2023年第2期702-711,共10页
China Environmental Science
基金
国家重点研发计划(2019YFC1904701)
长沙市杰出创新青年培养计划(kq2107010)。
关键词
建筑垃圾
资源化利用
动态物质流分析
碳排放
生产成本
construction and demolition waste
resource utilization
dynamic material flow analysis
carbon emission
production costs
