Department of Building Technology

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Author: search.filters.author.Tunji-Olayeni, PatienceSubject: search.filters.subject.Sustainability

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    Asymmetry in Professionals’ Perceptions of Sustainable Construction
    (2022) Tunji-Olayeni, Patience; Aigbavboa, Clinton; Oke, Ayodej
    Sustainable construction is the response of the construction industry to the environ mental, social and economic challenges arising from construction activities. Although the negative impact of construction activities is a global problem, it has local effe cts that require the inputs of indigenous stakeholders for mitigation. Hence, the study assessed the perceptions of professionals about sustainable construction with a view to boosting understanding of how individual awareness and commitments influence the implementation of sustainable construction. The study adopted a quanti tative research approach to obtain information from professionals working in different sectors of the construction industry in Lagos, Nigeria. Descriptive and inferential statistics were used to analyse data from the survey. Findings revealed statistically significant differences in the perceptions of professionals about sustainable constri ction. The findings have implications for: the design of sustainable construction policies, the business case for sustainable construction and the diffusion of sustainable construction.
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    Promoting construction for sustainability transformation: the perspective of institutional theory
    (Emerald Publishing Limited, 2023) Tunji-Olayeni, Patience; Kajimo-Shakantu, Kahilu; Ayodele, Timothy Oluwafemi; Babalola, Olubola
    Purpose – Sustainability transformation in the construction industry is vital for the attainment of sustainable development goals. While conventional construction has been at the expense of social and economic sustainability, sustainable construction can enhance environmental, social and economic outcomes for the construction industry and society at large. However, the industry struggles with new initiates because its stakeholders are products of unique institutions which shape their decisions and intentions to adopt new practices. This study assessed the institutional pressures that influence the adoption of sustainable construction to enhance our understanding of other factors that can promote and accelerate the adoption of sustainable construction. Design/methodology/approach – The study adopted a quantitative research design with the use of online questionnaires to elicit information from construction professionals in South Africa. Descriptive statistics of frequencies, mean and standard deviation were used to analyse the data obtained from the survey. Linear regression was also used to assess the influence of institutional pressures on the adoption of sustainable construction. Findings – Mimetic pressures were found to have a significant influence on the adoption of sustainable construction. The decision to adopt sustainable construction was based on the sustainability actions of industry leaders (mimetic pressure). Normative and coercive pressures had no significant influence on the adoption of sustainable construction. Practical implications – Mimetic pressure from competitors and normative pressures is already exerting some pressure on stakeholders to adopt sustainable construction. However, there cannot be a long-term commitment that will yield the needed sustainability transformations without additional normative pressure from learned societies and coercive pressure from the government. As one of the pioneering works from the global south, this study provides empirical validations of the influence of institutional pressures on the adoption of sustainable construction. It also enhances understanding of how institutional pressures from the social context can promote and accelerate the adoption of sustainable construction. Originality/value – The findings present one of the pioneering efforts to empirically validate the influence of institutional pressures on the adoption of sustainable construction.
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    Innovation potentials for construction materials with specific focus on the challenges in Africa
    (2020) Tunji-Olayeni, Patience; Schmidt, Wolfram; Otieno, , Mike; Olonade, Kolawole Adisa; Radebe, Nonkululeko W.; Damme, Henri van; Kenai, Said; Tawiah, Angela Tetteh; Manful, Kuukuwa; Akinwale, Akeem; Mbugua, Rose N.; Rogge, Andreas
    Africa is urgently in need of adequate basic infrastructure and housing, and itis one ofthe continents wheremassive construction activities are on the rise. There is a vast variety of potentially viable resourcesforsustainable construction on the continents, and consequently,the continent can bring innovative, greener technologies based on local sources effectively into practice. However, unlike established concrete constituents from industrialised countries in the global North,most ofthe innovation potentialsfromthe African continent have not yet been the focus of intensive fundamental and applied research. This clearly limits the implementation of more sustainable local technologies. This paper presents a case forthe need to first appreciate the rich diversity and versatility ofthe African continent which is often notrealistically perceived and appreciated. It discusses specific innovation potentials and challenges for cementitious materials and concrete technology based on local materials derived from sources on the African continent. The unique African materials solutions are presented and discussed, from mineral binders over chemical admixtures and fibres to reinforcement and aggregates. Due to the pressing challenges faced by Africa, with regards to population growth and urbanisation,the focusis not only put on the technological (durability,robustness and safety) and environmentalsustainability, but also strongly on socio‐economic applicability, adaptability and scalability. This includes a review of alternative, traditional and vernacular construction technologies such as materials‐saving structuresthat help reducing cementitious materials. Eventually, a strategic research roadmap is hypothesised that points out the most relevant potentials and research needsfor quick implementation of more localised construction materials.
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    Research trends in industry 5.0 and its application in the construction industry
    (Emerald Publishing Limited, 2023) Tunji-Olayeni, Patience
    Purpose – Industry 5.0 provides significant social, environmental and economic benefits over previous industrial revolutions. However, research in the field of industry 5.0 is still at a very nascent stage. Little is known about research trends in the field and its applications in specific sectors as construction which have relatively low sustainability index. Hence, this study aims to explore research trends in industry 5.0 and its applications in the construction industry. Design/methodology/approach – The study adopted a bibliometric analysis with the use of the vosviewer. The main search words used in the study were “Industry 5.0”, “Society 5.0” AND “Fifth Industrial Revolution”. Initial extracted papers with these keywords were 1036. After refining based on language, document type, key words and timeframe, a total of 188 papers were found suitable for the analysis. Findings – The most impactful research on Industry 5.0 to date was from the United States, Australia and Sweden while the journal sustainability was found to be the highest document source on Industry 5.0. The application areas of industry 5.0 in the construction industry include health and safety, collaborative working, waste management, measurement of environmental features (indoor air quality, atmospheric pressure, noise, humidity and temperature) and forecasting of environmental, social or financial outcomes. Research limitations/implications – The study used review based papers which form the bulk of the existing research on industry 5.0. This limits understanding of the practical applications, benefits and challenges associated with the use of industry 5.0. Originality/value – This work contributes to the theory and practice of industry 5.0 by providing baseline data for future research directions on industry 5.0. The work specifically highlights the application areas of industry 5.0 in the construction industry and also indicates the need for questionnaire, interviews or case study based research to enhance understanding of the practical applications of industry 5.0.