Tafesse Shitaw, Girma Yidnekachew Esayas, Dessalegn Eliyas
Department of Construction Technology and Management, College of Engineering and Technology, Dilla University, Dilla, Ethiopia.
Heliyon. 2022 Mar 26;8(3):e09169. doi: 10.1016/j.heliyon.2022.e09169. eCollection 2022 Mar.
This study aims to analyze the significant socioeconomic and environmental impacts of construction waste and to indicate management strategies. An extensive review of the literature and interviews with construction experts were used to identify waste impact factors. Then a questionnaire survey was conducted based on a five-point Likert scale and the data were analyzed by descriptive statistics. The result showed that construction waste becomes a challenge for almost 95.71% of ongoing construction projects. However, only 57.14% of the construction companies have recorded and measured the volume of material waste. From purchased materials, 6-10% is recorded as waste that lead to project cost overrun. In addition, there is no professional assigned to handle waste issues in 75.71% of construction companies. The study also indicates that project cost overrun, pollution of the environment, reduction in profit and failure of construction firms, excessive consumption of raw materials, and public health and safety risks are ranked as the five major impacts of construction waste, respectively. Employing a waste management officer, using prefabricated or off-site components, implementing strong onsite management practices, reusing and recycling materials leftover on the sites, and practicing green building codes and specifications are measures devised to mitigate construction waste and its impacts.
本研究旨在分析建筑废弃物产生的重大社会经济和环境影响，并指明管理策略。通过广泛查阅文献以及与建筑专家进行访谈来确定废弃物影响因素。随后基于五点李克特量表开展问卷调查，并运用描述性统计方法对数据进行分析。结果显示，建筑废弃物给近95.71%的在建工程项目带来了挑战。然而，仅有57.14%的建筑公司记录并测量了材料废弃物的数量。从采购的材料来看，有6% - 10%被记录为废弃物，这导致了项目成本超支。此外，75.71%的建筑公司没有安排专人处理废弃物问题。该研究还表明，项目成本超支、环境污染、利润减少和建筑公司倒闭、原材料过度消耗以及公共健康和安全风险分别位列建筑废弃物的五大主要影响。聘用废弃物管理专员、使用预制或场外组件、实施严格的现场管理措施、对施工现场剩余材料进行再利用和回收以及践行绿色建筑规范和标准，这些都是为减轻建筑废弃物及其影响而制定的措施。
