建筑废弃物资源化利用生命周期能耗及碳排放评价研究

Research on life cycle energy consumption and carbon emission assessment of resource utilization of construction waste

为响应国家节能减排目标,实现建筑行业可持续发展,建筑废物资源化利用成为行业高度关注的课题,但是与其配套的环境影响评价技术仍有待完善。为评价建筑废弃物资源化利用对能源的使用及碳排放过程的影响,采用生命周期评价法,建立建筑废弃物回收再利用的能耗和温室气体排放评估模型,并以福州市某工程为例,系统地评价使用再生骨料在该工程实例中的节能和温室气体减排效果。

The resource utilization of construction waste has become a highly concerned topic in the construction industry to realize the national energy conservation and emission reduction target as well as the sustainable development of this industry.However,the supporting environmental impact assessment methodology still needs to be improved.In order to evaluate the impact of the resource utilization of construction waste on energy use and carbon emission process,the life cycle assessment was used to establish the assessment model for the recycling and reuse of construction waste.A project in Fuzhou was taken as an example to systematically evaluate the effect of energy-saving and greenhouse gas emission reduction after using recycled aggregate.The research on technology integration and application demonstration of the case project in life cycle low-carbon construction and environmental protection can provide scientific and technological support for building a resource-saving and environment-friendly society.