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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Journal of Engineering and Management in Industrial System Jurnal Mechanical Jurnal Rekayasa Mesin Civil and Environmental Science Journal (CIVENSE) Makara Journal of Technology Journal of Sustainable Construction
Dan-asabe, Bashar
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Sustainable Construction Project Management: Developing a Framework for Assessing Sustainability Performance in Nigerian Mega Projects Unegbu, H C O; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, A.A.
Civil and Environmental Science Journal (CIVENSE) Vol. 8 No. 2 (2025)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2025.008.02.1

Abstract

This study develops a tailored sustainability assessment framework for Nigerian mega projects. The framework is applied to four diverse case studies: a highway expansion, an airport terminal, a renewable energy project, and a residential housing development. Results show that the renewable energy project achieved the highest sustainability score due to its superior environmental and economic performance. In contrast, the highway expansion project ranked the lowest, primarily because of its significant environmental impact and limited community engagement. Key findings emphasize the critical role of community engagement and lifecycle costing in achieving sustainable outcomes. Projects that incorporated inclusive planning and long-term financial strategies performed better overall. However, the study also identifies significant barriers, including weak regulatory enforcement and monetary limitations, which restrict the adoption of sustainable construction practices. The research highlights the need for localized sustainability frameworks in developing countries, as international models like LEED and BREEAM may not fully address context-specific challenges. This framework provides a valuable tool for policymakers, project managers, and stakeholders to enhance sustainability in large-scale infrastructure projects and support long-term development objectives.
Smart Materials for Noise and Vibration Damping in High-Speed Rail Systems: A Comparative Analysis Unegbu, Hyginus Chidiebere Onyekachi; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Makara Journal of Technology Vol. 28, No. 3
Publisher : UI Scholars Hub

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Abstract

Effective noise and vibration control remains a critical challenge in high-speed rail systems, directly influencing passenger comfort and the longevity of infrastructure. This study evaluated four advanced materials—piezoelectric materials, shape memory alloys (SMAs), magnetorheological (MR) fluids, and damping composites—focusing on their potential for mitigating noise and vibration in high-speed rail applications. A combination of experimental and simulation-based analyses was employed to assess these materials based on their noise reduction coefficient, vibration transmissibility ratio, thermal stability, and durability under varying environmental conditions. The findings revealed that damping composites and SMAs demonstrated superior performance, offering enhanced noise attenuation and vibration control compared with the other materials. Damping composites exhibited the highest noise reduction and stability across a wide frequency range, while SMAs demonstrated exceptional adaptive damping properties under fluctuating temperature conditions. In contrast, piezoelectric materials and MR fluids showed moderate performance, making them more suitable for secondary damping applications. This study identifies damping composites and SMAs as the most effective materials for primary noise and vibration control in high-speed rail systems. The findings provide valuable insights for material selection and integration in rail infrastructure, contributing to enhanced system performance, reduced maintenance costs, and compliance with stringent noise and vibration regulations.
Overcoming Barriers to Integrating Circular Economy in Nigerian Infrastructure Design and Construction Unegbu, Hyginus; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Journal of Sustainable Construction Vol 5 No 2 (2026): Journal of Sustainable Construction
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/josc.v5i2.9269

Abstract

This study investigates the integration of Circular Economy (CE) principles into Nigerian infrastructure projects, identifying key barriers and proposing effective countermeasures. The research employed a mixed-methods approach, combining surveys and semi-structured interviews with 100 stakeholders, including policymakers, construction professionals, and academic experts. The analysis revealed significant barriers across economic, technical, policy, and social dimensions. Economic challenges included high initial costs and limited financial resources. Technical barriers were characterized by a lack of expertise and insufficient infrastructure for sustainable materials. Policy and regulatory obstacles highlighted inadequate policies and poor enforcement, while social barriers pointed to resistance to change and low awareness of CE benefits. Proposed countermeasures included implementing government incentives such as tax breaks and subsidies, fostering public-private partnerships to leverage combined resources and expertise, and launching education and awareness campaigns to build capacity and support for CE practices. The findings have significant implications for policymakers and industry stakeholders, emphasizing the need for a comprehensive national CE policy framework and collaborative efforts to promote sustainability. Future research should focus on the long-term impacts of CE integration and explore innovative solutions to overcome identified barriers.
Co-Authors Alabi, A.A. Alabi, Abdulmumin Akoredeley Unegbu, H C O Unegbu, H. C.O. Unegbu, Hyginus Unegbu, Hyginus C. O. Unegbu, Hyginus Chidiebere Onyekachi Yawas, Danjuma S. Yawas, Danjuma Saleh Yawasa, Danjuma S.