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While innovative building materials (IBM) have emerged as a promising solution for addressing the global construction industry’s environmental, economic and social challenges, their adoption is plagued with increasing challenges in the Nigerian construction industry (NCI). To provide practical strategies to overcome the present IBM challenges in the NCI, the barriers that hinder its successful adoption need detailed investigation. Consequently, this study examines the barriers that affect the adoption of IBM for sustainable construction (SC) in the NCI.

A quantitative research approach was used to obtain primary data from 282 construction professionals, viz. architects, builders, engineers and quantity surveyors, via a closed-ended questionnaire survey. Data were analysed using a mean item score (descriptive analysis) and exploratory factor analysis (inferential analysis).

The study revealed the top five most significant barriers to IBM adoption in the NCI. These barriers include lack of awareness and knowledge, learning/training period, cost and economic viability, lack of qualified staff and lack of end-user involvement. Factor analysis revealed five components of barriers: resource and policy-related barriers, perception and cultural-related barriers, organisational-related barriers, awareness and market-related barriers and resistance and stakeholder engagement-related barriers.

The findings of this study have several practical implications for construction professionals, policymakers and other stakeholders in Nigeria. The study highlights the need for increased awareness and technical expertise to promote the adoption of IBM in the NCI. The study also recommends several practical strategies for overcoming the barriers to IBM adoption and promoting SC practices in Nigeria, such as fostering a positive perception of sustainable concepts, fostering stakeholder support and involvement and promoting a more conducive environment for adopting sustainable practices. The implication of this study transcends the local context, offering a model for other countries to consider, thereby contributing to a global shift towards sustainable construction practices.

The findings highlight the critical role of societal attitudes and awareness in adopting IBM, suggesting the need for educational and awareness programmes to shift public and organisational perception. This shows the importance of cultural change and societal readiness to embrace sustainable construction practices.

This study contributes significantly to knowledge of the barriers to adopting IBM for SC in NCI. Findings from the study will inform policymakers, industry professionals and other stakeholders about the key barriers that require attention and intervention, facilitating the initiatives to overcome these barriers effectively.

This paper aims to explore the intellectual structure shaping the circular economy (CE) discourse within the built environment in Africa.

The study adopted a bibliometric analysis approach to explore the intellectual structure of CE in the built environment in Africa. The authors collected 31 papers published between 2005 and 2021 from the Scopus database and used VOSviewer for data analysis.

The findings show that there are six clusters shaping the intellectual structure: demolition, material recovery and reuse; waste as a resource; cellulose and agro-based materials; resilience and low-carbon footprint; recycling materials; and the fourth industrial revolution. The two most cited scholars had three publications each, while the top journal was Resources, Conservation and Recycling. The dominant concepts included CE, sustainability, alternative materials, waste management, lifecycle, demolition and climate change. The study concludes that there is low CE research output in Africa, which implies that the concept is either novel or facing resistance.

The data were drawn from one database, Scopus; hence, adoption of alternative databases such as Web of Science, Google Scholar and Dimensions could potentially have yielded a higher number of articles for analysis which potentially would result in different conclusions on the subject understudy.

This study made a significant contribution by articulating the CE intellectual structure in the built environment, identified prominent scholars and academic platforms responsible for promoting circularity in Africa.