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Assessment of the Contribution of Interlocking Stabilized Soil Block Technology to Affordable Housing Delivery in Nigeria


Authors : Adebanjo Eyitayo; Adeniran Omobolanle; Asianya Chukwuebuka; Ezeokafor Emmanuel; Mathias Gideon Ikenya; Musa Beloveth Ohine; Ojelabi Favour Akindeji; Olajolo Oluwagbotemi Emmanuel; Opefoluwa Oluwole; Oyebanjo Sesan Daniel; Umeh Malachy Chinenye

Volume/Issue : Volume 11 - 2026, Issue 7 - July


Google Scholar : https://tinyurl.com/yt74398u

Scribd : https://tinyurl.com/yf4yawde

DOI : https://doi.org/10.38124/ijisrt/26jul689

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.


Abstract : Nigeria currently faces a severe residential supply crisis, officially estimated at a deficit of 14.925 million units for the 2025/2026 period. This shortage is exacerbated by the high costs of conventional, cement-intensive building materials, which dominate the domestic construction sector. To address this critical gap, the adoption of sustainable, costeffective alternative materials is required. This paper presents a comprehensive assessment of compressed earth masonry as a potentially viable architectural intervention for mass residential delivery. Utilizing a descriptive review design supported by Comparative Cost-Benefit Analysis (CBA), the study evaluates the economic, structural, and environmental performance of this technology against standard hollow sandcrete blocks. The quantitative methodology indexes a standard one-square-meter walling unit to isolate material and labor expenditures, specifically analyzing the financial impact of a mortar-less dry-stacking technique. The findings demonstrate significant cost efficiency; erecting a basic wall panel yields a 12.44% raw capital reduction compared to sandcrete, primarily through the elimination of auxiliary bedding mortar expenses. Furthermore, empirical evaluations indicate that this integration improves indoor thermal comfort and acoustic insulation due to the natural thermal mass and density of the compressed earth. Despite these advantages, widespread adoption remains constrained by strict soil requirements, on-site quality control challenges, and negative public perceptions regarding earthen architecture. The paper concludes that while moisture management requires targeted design solutions, the overarching economic and environmental benefits are consistent with Nigeria's affordable development goals. It recommends that policymakers and urban planners incentivize earth-based construction technologies through standardized building codes and targeted green financing to contribute to addressing the national housing deficit.

Keywords : Acoustic Attenuation; Comparative Economics; Dry-Stacked Masonry; Eco-Friendly Construction; Environmental Sustainability; Thermal Mass.

References :

  1. Bakam, V. A., Mbishida, M. A., & Danjuma, T. (2023). Acoustic property of interlocking compressed stabilized earth blocks: A sustainable alternative for building materials. Journal of Sustainable Construction Materials and Technologies, 8(2), 89–95. https://doi.org/10.47481/jscmt.1294558
  2. Bredenoord, J., Kokkamhaeng, W., Janbunjong, P., Nualplod, O., Thongnoy, S., Khongwong, W., Ngernchuklin, P., & Mahakhant, A. (2019). Interlocking block masonry (ISSB) for sustainable housing purposes in Thailand, with additional examples from Cambodia and Nepal. Engineering Management Research, 8(2), 42–53. https://doi.org/10.5539/emr.v8n2p42
  3. Bredenoord, J., & Kulshreshtha, Y. (2023). Compressed stabilized earthen blocks and their use in low-cost social housing. Sustainability, 15(6), 5295. https://doi.org/10.3390/su15065295
  4. Danjuma, T. (2020). Energy efficiency of the NBRRI interlocking compressed stabilized earth blocks for sustainable buildings in Nigeria. International Journal of Recent Engineering Science, 7(2), 12–16. https://doi.org/10.14445/23497157/ijres-v7i2p103
  5. Hafez, H., El-Mahdy, D., & Marsh, A. T. M. (2023). Barriers and enablers for scaled-up adoption of compressed earth blocks in Egypt. Building Research & Information, 51(7), 783–797. https://doi.org/10.1080/09613218.2023.2237133
  6. Ibitoye, O. A. (2025). A critical analysis of interlocking stabilized soil blocks (ISSB) in residential architecture: A case study of Obayemi House, Redemption Camp, Ogun State. International Journal of Multidisciplinary Research and Growth Evaluation, 6(3), 562–569.
  7. Ibitoye, O. A., Abiola, O. A., & Babamboni, A. S. (2023). Demographic characteristics of housing estates developed with ISSB technology in selected southwestern Nigerian (SWN) cities. FUDMA Journal of Sciences, 7(2), 275–283.
  8. Ibitoye, O. A., Alagbe, O., & Dare-Abel, O. (2022). Comparative cost advantages of interlocking stabilized soil block and sandcrete block for building construction in South-West Nigeria. International Journal of Scientific Research and Engineering Development, 5(5), 549–558.
  9. Ibitoye, O. A., & Tolu-Alalade, J. O. (2026). Solar-powered low-cost housing: Designing off-grid communities with interlocking stabilised soil blocks (ISSB). FUDMA Journal of Engineering and Technology, 2(1), 226–231.
  10. Okunlola, A. T., & Ibitoye, O. A. (2026). A thematic review of interlocking stabilized soil blocks (ISSB) as a sustainable building material for mixed-use building design in Lagos. Journal of African Innovation & Advanced Studies, 11(2), 253–270.
  11. Olaleye, A. A., & Ibitoye, O. A. (2022). Architect’s response on utilisation of interlocking stabilised soil blocks as an alternative building material for housing projects in Southwest Nigeria. FUDMA Journal of Sciences, 6(5), 198–202.

Nigeria currently faces a severe residential supply crisis, officially estimated at a deficit of 14.925 million units for the 2025/2026 period. This shortage is exacerbated by the high costs of conventional, cement-intensive building materials, which dominate the domestic construction sector. To address this critical gap, the adoption of sustainable, costeffective alternative materials is required. This paper presents a comprehensive assessment of compressed earth masonry as a potentially viable architectural intervention for mass residential delivery. Utilizing a descriptive review design supported by Comparative Cost-Benefit Analysis (CBA), the study evaluates the economic, structural, and environmental performance of this technology against standard hollow sandcrete blocks. The quantitative methodology indexes a standard one-square-meter walling unit to isolate material and labor expenditures, specifically analyzing the financial impact of a mortar-less dry-stacking technique. The findings demonstrate significant cost efficiency; erecting a basic wall panel yields a 12.44% raw capital reduction compared to sandcrete, primarily through the elimination of auxiliary bedding mortar expenses. Furthermore, empirical evaluations indicate that this integration improves indoor thermal comfort and acoustic insulation due to the natural thermal mass and density of the compressed earth. Despite these advantages, widespread adoption remains constrained by strict soil requirements, on-site quality control challenges, and negative public perceptions regarding earthen architecture. The paper concludes that while moisture management requires targeted design solutions, the overarching economic and environmental benefits are consistent with Nigeria's affordable development goals. It recommends that policymakers and urban planners incentivize earth-based construction technologies through standardized building codes and targeted green financing to contribute to addressing the national housing deficit.

Keywords : Acoustic Attenuation; Comparative Economics; Dry-Stacked Masonry; Eco-Friendly Construction; Environmental Sustainability; Thermal Mass.

Paper Submission Last Date
31 - August - 2026

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