College of Civil Engineering and Architecture, Wuhan University of Technology, China.
China Construction First Building (Group) Corporation Limited, Beijing, China.
Waste Manag Res. 2020 Apr;38(4):433-443. doi: 10.1177/0734242X19886635. Epub 2019 Nov 18.
Estimation of construction waste generation is critical to construction waste management decisions. However, current construction waste estimation methods have various limitations (e.g. small samples). To address those limitations, this research conducts an empirical study to evaluate the waste generation rate of different types of waste at different construction stages. In this study, construction waste from 148 new-built residential construction sites in China were sorted and weighted on site and their waste generation rates were estimated separately. The results indicated that the amount of inorganic nonmetallic waste with a generation rate of 16.59 kg m was the highest among the five types of waste (i.e. inorganic nonmetallic waste, organic waste, metallic waste, composite waste, hazardous waste), while the waste generation rate for the underground construction stage, which was 27.57 kg m, was the highest among the three stages (i.e. underground stage, superstructure stage, finishing stage). Compared with previous data, the new waste generation rate proposed in this research can better estimate the actual waste generation situation in construction sites, which provides reliable information for proper decision-making. Furthermore, based on the result of the empirical study, some recommendations for construction waste reduction are proposed.
估算建筑废弃物的产生量对建筑废弃物管理决策至关重要。然而，当前的建筑废弃物估算方法存在各种局限性（例如，样本量小）。为了解决这些局限性，本研究进行了一项实证研究，以评估不同类型废弃物在不同施工阶段的产生率。在这项研究中，对中国 148 个新建住宅建筑工地的建筑废弃物进行了现场分类和称重，并分别估算了它们的产生率。结果表明，在这五类废弃物（即无机非金属废物、有机废物、金属废物、复合材料废物和危险废物）中，产生率为 16.59kg/m 的无机非金属废物数量最高，而地下施工阶段的废弃物产生率（27.57kg/m）在三个阶段（即地下阶段、上部结构阶段和装修阶段）中最高。与以往数据相比，本研究提出的新的废弃物产生率能够更好地估算施工现场的实际废弃物产生情况，为合理决策提供可靠信息。此外，基于实证研究的结果，提出了一些减少建筑废弃物的建议。
