Purpose

Construction and Demolition (C&D) Waste Management (WM) poses significant challenges in Sri Lanka, contributing to environmental degradation and resource depletion. To address these issues, this study explores the application of Circular Economy (CE) strategies in minimising waste generation and optimising resource utilisation in Sri Lankan construction industry. The research focuses on the construction and building renovation and use and operate stages of the building project life cycle, recognising their significance in waste generation and resource consumption.

Design/methodology/approach

The research employed a qualitative approach, utilising the Delphi technique through three rounds of expert interviews. Seventeen experts were involved in the first round, followed by fifteen in the second round, and twelve in the final round. The collected data was analysed using manual content analysis methods.

Findings

The research findings revealed fifteen C&D WM issues in the construction and building renovation stage in Sri Lanka, along with suitable strategies to overcome each of them. Similarly, eight C&D WM issues were identified for the use and operate stage of the building, and corresponding strategies were provided to address each issue. By adopting CE strategies such as modular design and material reuse, construction projects can optimise the project's timeline, cost, and quality factors. These strategies enable efficient resource allocation, reduce waste generation, and contribute to the overall sustainability of the project. The impact of CE strategies on mitigating these issues within the project management iron triangle was also discussed.

Originality/value

This paper entails delving into how construction, building renovation, and operation stages of a building's life cycle intersect with CE strategies, which profoundly influence operational efficiency and long-term sustainability. By incorporating principles such as energy efficiency, water conservation, and circular product design, the paper illuminates how these strategies facilitate decreased energy usage, enhanced resource management, and diminished waste production throughout the building's lifespan.

中文翻译：

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通过循环经济战略优化斯里兰卡的建筑垃圾管理：重点关注建设和改造以及使用和运营阶段

目的

建筑和拆除 (C&D) 废物管理 (WM) 给斯里兰卡带来了重大挑战，导致环境退化和资源枯竭。为了解决这些问题，本研究探讨了循环经济（CE）策略在斯里兰卡建筑业中最大限度地减少废物产生和优化资源利用的应用。研究重点是建筑项目生命周期的建造和建筑改造以及使用和运营阶段，认识到它们在废物产生和资源消耗中的重要性。

设计/方法论/途径

该研究采用定性方法，利用德尔菲法通过三轮专家访谈。第一轮有十七名专家参加，第二轮有十五名专家参加，最后一轮有十二名专家参加。使用手动内容分析方法对收集的数据进行分析。

发现

研究结果揭示了斯里兰卡建设和建筑改造阶段的 15 个 C&D WM 问题，以及克服每个问题的适当策略。同样，建发局针对建筑物的使用和运营阶段确定了八个WM问题，并针对每个问题提出了相应的解决策略。通过采用模块化设计和材料再利用等CE策略，建筑项目可以优化项目的时间、成本和质量因素。这些策略可以实现有效的资源分配，减少废物的产生，并有助于项目的整体可持续性。还讨论了 CE 策略对缓解项目管理铁三角内这些问题的影响。

原创性/价值

本文需要深入研究建筑生命周期的建造、建筑改造和运营阶段如何与 CE 策略相交叉，从而深刻影响运营效率和长期可持续性。通过结合能源效率、节水和循环产品设计等原则，本文阐述了这些策略如何在建筑物的整个生命周期内促进减少能源使用、加强资源管理和减少废物产生。