Traditionally, construction and demolition waste (CDW) materials have been considered to be unwanted, surplus, or wastage materials or materials with zero value. Such a conceptualisation only embraces a negative aspect, which underpins the disposal of reusable and recyclable CDW materials in landfills, thus damaging the circular economy and the environment. The scope of this research was to conceptualise the circular economy potential of non-hazardous construction and demolition waste, which can be used as a resource for advancing the circular economy and sustainability in the built environment. Thus, the abbreviation ‘CEPCDR’ is used for this purpose. The study employs an integrative literature review to understand in depth whether the rationale in the existing CDW definitions advocates for the circular economy. Instead, the literature showed that the current definitions mainly support quantitative, economic, or classification needs, respectively. That is because they lack consideration of the dynamic nature of CDW materials, which embraces the spatial and temporal dimensions. The former involves the geographic context in which the CDW phenomenon eventuates, while the latter concerns the lifecycle of materials. This study contributes to the body of knowledge by conceptualising the CEPCDR using a holistic approach that includes five dimensions: the social, economic, environmental, spatial, and temporal perspectives. Furthermore, the study seeks to drive future research in measuring the CEPCDR.

Purpose: This paper aims to report a comprehensive analysis of literature on stakeholder relationships towards identifying patterns of relationships within the off-site construction context.Design/methodology/approach: Key scholarly databases were accessed and after a filtering process, 74 relevant papers were retrieved for analysis. The papers were analysed using qualitative content analysis and scientometric techniques through the application of software Leximancer and VOSviewer.Findings: Research synthesis methods used in the present study generate compatible results. Through text mining analysis, the key themes identified in the off-site construction stakeholder relationships literature included “collaboration”, “building information modelling”, “social network analysis”, supply chain. As a finding by scientometric analysis, collaboration, BIM, supply chain management, housing and social network analysis were the most frequently entered keywords context of off-site construction. Regarding authorship pattern, the whole network of collaboration was fragmented into multiple isolated clusters, implying that the authors had tendency to cooperate in small groups.Practical implications: The paper can bring together an important area of research not previously studied in detail. It will primarily assist academics in the first instance; however, the research leads to important findings that will ultimately assist policymakers and practitioners better understand factors affecting stakeholder relationships and in particular network thinking and collaborative mind-sets.Originality/value: The review contributes a needed systematic and theoretical foundation for future stakeholder relationship studies and practices in off-site construction sector. It provides the basis for future studies and is a seminal analysis of stakeholder management and off-site construction. The scientometric methodology offers scholars a different approach to analysing and visualising literature reviews.

Exposure to various stressors has resulted in a significant problem of mental health among the construction workforce. A culturally intolerant environment may aggravate mental ill health in a multicultural workplace. However, an underlying structural issue that has not been sufficiently addressed to date is the influence the crucial personal characteristics and environmental stressors have on mental health in the multicultural construction environment. This study aims to examine the role of personal characteristics and environmental stressors in construction workers’ mental health in the multicultural environment. Data were collected using an online questionnaire survey from 252 construction workers in Australia. The structural equation modelling (SEM) technique with partial least-squares estimation (PLS) was adopted to analyze the data. Results showed that workers’ mental health is not only influenced by stressors related to the work environment, but also by individual traits. Increased levels of cultural stressors tend to aggravate the adverse effect of work stressors on mental health. Work stressors are more likely to cause mental ill health for the individuals characterized by a higher level of aggressive, competitive, ambiguous, and impulsive personalities; whilst cultural stressors are less likely to cause mental ill health for those individuals. This research offers an innovative perspective on the relationships between crucial person-environment factors and mental health, and informs the practice of work health and safety in the multicultural construction workplace.