建筑垃圾资源化利用及其生命周期评价的研究进展

The research development of construction and demolition waste resource utilization and its life cycle assessment

从中国知网(CNKI)与Web of Science数据库中检索国内外关于建筑垃圾资源化利用及其生命周期评价(LCA)的相关文献,系统归纳了国内外建筑垃圾分类和资源化利用技术现状,并对LCA方法及相关模型在建筑垃圾资源化利用中的研究进展及应用情况进行了综述。结果表明,LCA方法是量化建筑垃圾管理体系环境效应的重要方法之一,能够科学评估建筑垃圾资源化利用的能源消耗、环境排放以及再生循环产品效益等,是建筑垃圾可持续管理和“无废城市”建设的重要基础。中国在建筑垃圾资源化利用、LCA模型开发及与其他研究方法集成方面还需继续探索,在建筑垃圾源头减量和建筑垃圾回收体系建立等方面仍面临巨大挑战。

The relevant literatures on the resource utilization of construction and demolition waste and its life cycle assessment(LCA) domestically and internationally were collected from China National Knowledge Infrastructure(CNKI) and Web of Science database.This paper systematically summarized the current status of classification and resource utilization technology of construction and demolition waste at domestic and international levels,and also reviewed the research progress and application status of LCA methods and related models in the resource utilization of construction and demolition waste.Analysis showed that the LCA method,as one of the most important methods for quantifying the environmental impact of the construction and demolition waste management system,could scientifically assess the consumption of energy,the emissions to environment and the benefits of regenerative products of construction and demolition waste resource utilization.This provided a solid theoretical foundation for achieving construction and demolition waste sustainable management and promoting the construction of “waste-free cities”.China still needs to continue exploring the areas of construction and demolition waste resource utilization,LCA model development,and integration with other research methods.There are still significant challenges in reducing the source of construction and demolition waste and establishing a recycling system for construction and demolition waste.