The construction business environment is becoming competitive and intense, and Business Models (BMs) are receiving considerable attention as potential sources of sustainable survival and growth. Converse to the Linear Economy (LE) model that industry follows, the Circular Economy (CE) model has the potential to create a sustainable construction industry while also creating a sustainable business environment in construction organisations. Nevertheless, in traditional BMs, value is often concentrated on the financial value for the stakeholders; in the Circular Economy Business Model (CEBM), value is seen more broadly by considering a comprehensive range of value chain partners, the environment, and society. Hence, implementing the CE in the construction industry requires reforms in each value chain. Thus, the aim of this paper is to develop a conceptual model for construction organisations’ adoption of CEBM for their organisations. To accomplish this aim, the objectives of this paper are twofold: (i) to define the concept of CEBM and (ii) to map a conceptual Circular Economy Business Model Canvas (CEBMC) that is applicable in the construction organisational context. This research adopted a systematic document review, including a content analysis of selected papers. This study contributes significantly by proposing a CEBMC where construction organisations can successfully transform their businesses from linear to circular environments.

Purpose: Numerous barriers have hindered circular economy (CE) implementation in various contexts, in particular, in the construction industry. Among those barriers, the confusion of CE terminologies together with a lack of awareness is identified as one of the main barriers. Hence, this research focuses on differentiating frequently misused CE terminologies based on their definitions to establish a comprehensive understanding and thereby aims to develop a taxonomy for CE terminologies. Design/methodology/approach: A qualitative approach was adopted encompassing a comparative literature analysis followed by an expert validation. To carry out the comparison, the academic definitions from Oxford and Cambridge dictionaries were compared and contrasted with the definitions from universal standards and guides or literature sources related to CE. Subsequently, the consolidated definitions were established for selected terminologies, and based on their cognitive meaning, a conceptual hierarchy of the terminologies was identified. These definitions with the identified hierarchy were validated by a selected panel of experts who had expertise in CE in construction and represented academia, industry and policy development sectors to finally propose the taxonomy of CE terminologies. Findings: The final CE taxonomy presents nine frequently misused terminologies, their definitions and the hierarchical order. This paper further offers examples of the practical usage of each defined terminology based on insights from the construction industry. Originality/value: The proposed taxonomy can be applied to any context and provides significant guidance for any CE researcher or practitioner on the appropriate usage of CE terminologies.

The construction industry has a crucial role in a country’s development process, nevertheless, it has a significant impact as it contributes to the emission of harmful gases, waste generation, and energy and resource consumption, making it one of the major contributors to environmental issues. By adopting Circular Economy (CE) principles, the construction industry can reduce costs, mitigate negative environmental impacts, address inherent complexities, and increase the resilience of urban areas to create more liveable, productive, and convenient cities. Utilising Digital Technologies (DT) is crucial in achieving circularity in construction. By identifying a knowledge gap in DT-enabled circularity, this research is aimed at exploring current research on DT-enabled circularity in the construction industry. A bibliometric analysis was conducted to address this aim and identify prominent authors, countries, and key research studies (co-occurrences of keywords). Around 66 documents published in Scopus were collected and analysed using “VOSviewer” software. The analysis revealed that a limited number of studies have been carried out in the selected research area. The results reported in the paper not only serve as a useful reference for both researchers and practitioners, but also signpost further works to be undertaken.

Purpose: The creation of occupant satisfaction can be reached through the involvement of building performance mandates (BPMs) while enhancing the functionality of buildings. BPMs comprise five mandates namely, spatial performance, thermal performance, indoor air quality performance, acoustic performance, and visual performance. BPMs have been recognized as a vital element when refurbishing post-fire apparel buildings. However, the evaluation of post-fire refurbishment projects is mainly focused on mechanical and physical properties while ignoring the BPMs. Further, there is insufficient literature on the BPMs in post-fire building refurbishment. Hence, the purpose of this research is to identify the importance of BPMs, and its challenges and propose strategies to enhance the building performance of post-fire refurbished apparel manufacturing buildings in Sri Lanka.Design/methodology/approach: The study was conducted by involving a qualitative research approach. An extensive literature review and eighteen semi-structured interviews under three fire-affected apparel cases were involved as data collection methods and collected data were analyzed using content analysis.Findings: Findings highlighted the procedure of post-fire refurbishment and the importance of BPMs for apparel buildings to enhance building performance in post-fire situations. The research identified 42 challenges encountered in maintaining BPMs of post-fire refurbished apparel buildings and provided 70 strategies to overcome the identified challenges.Originality/value: This study offers a comprehensive analysis of challenges in maintaining BPMs and strategies to overcome the identified challenges which facilitate enhancing the performance of post-fire refurbished apparel buildings in Sri Lanka.