In Sri Lanka, the management of Construction & Demolition (C&D) waste poses a major problem, leading to environmental degradation and depletion of resources. This study aims to tackle these issues by examining the implementation of Circular Economy (CE) strategies within the construction industry of Sri Lanka. The focus is on reducing waste generation and maximizing resource utilization during the demolitions and repurpose, as well as material recovery and production stages of the building project life cycle. These stages are crucial in terms of waste generation and resource consumption. A qualitative approach was employed in this research, utilizing the Delphi technique to gather insights through a series of three rounds of expert interviews. In the first round, 17 experts were involved, followed by 15 in the second round, and 12 in the final round. The data collected from these interviews were analysed using manual content analysis methods. Based on the research findings, a total of 14 C&D Waste Management (WM) issues were identified specifically in the Demolitions and Repurpose Stage in Sri Lanka. For each issue, suitable strategies were proposed to overcome them effectively. Furthermore, the study examined the impact of CE strategies on minimizing these issues within the context of the project management iron triangle. Similarly, the Material Recovery and Production Stage of the building presented eight C&D WM issues, each accompanied by corresponding strategies to address them. The research also explored the influence of CE strategies in mitigating these issues, considering the project management iron triangle. During the demolitions and repurpose stage, CE strategies focus on reducing waste generation and optimizing resource utilization. This involves carefully deconstructing buildings to salvage and recover materials that can be reused or repurposed.

中文翻译：

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斯里兰卡废物管理的循环经济战略：重点关注拆除和重新利用以及材料回收和生产阶段。

在斯里兰卡，建筑和拆除 (C&D) 废物的管理是一个重大问题，导致环境退化和资源枯竭。本研究旨在通过研究斯里兰卡建筑行业循环经济（CE）战略的实施情况来解决这些问题。重点是在建筑项目生命周期的拆除和重新利用以及材料回收和生产阶段减少废物产生并最大限度地利用资源。这些阶段对于废物产生和资源消耗至关重要。本研究采用定性方法，利用德尔菲技术通过一系列三轮专家访谈来收集见解。第一轮有17名专家参与，第二轮有15名专家参与，最后一轮有12名专家参与。使用手动内容分析方法对从这些访谈中收集的数据进行了分析。根据研究结果，斯里兰卡在拆除和重新利用阶段总共确定了 14 个拆建废物管理 (WM) 问题。对于每个问题，都提出了适当的策略来有效地克服它们。此外，该研究还考察了持续不断的战略对在项目管理铁三角背景下最大限度地减少这些问题的影响。同样，建筑物的材料回收和生产阶段提出了八个 C&D WM 问题，每个问题都附有相应的解决策略。该研究还考虑了项目管理铁三角，探讨了 CE 策略在缓解这些问题方面的影响。在拆除和重新利用阶段，CE 策略的重点是减少废物产生和优化资源利用。这涉及仔细解构建筑物以抢救和回收可重复使用或重新利用的材料。