Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Vol 9 No 10 (2025): Volume 9, Issue 10, October 2025 | Pages: 115-121
International Research Journal of Innovations in Engineering and Technology
OPEN ACCESS | Research Article | Published Date: 30-10-2025
This study investigates the potential of Periwinkle Shell Ash (PSA) and Steel Slag (SS) as eco-friendly stabilizers for lateritic soils used in highway construction. Laboratory tests, including Atterberg limits, Proctor compaction, California Bearing Ratio (CBR), and Unconfined Compressive Strength (UCS), were performed on natural soil and soil-stabilizer blends. Results indicate that PSA and SS significantly enhance soil strength, with optimal performance observed at 15–20% replacement levels. This binary composite reduces plasticity, increases load-bearing capacity, and offers a sustainable alternative to conventional stabilizers in Nigeria’s road construction sector.
Geotechnical, Lateritic Soil, Periwinkle Shell Ash, PSA, Steel Slag, SS, Highway Construction
Adebanwi, A. Adesina, & Osuolale, O. Michael. (2025). Enhancing the Geotechnical Properties of Lateritic Soil Using Binary Composite of Periwinkle Shell Ash and Steel Slag for Highway Construction. International Research Journal of Innovations in Engineering and Technology - IRJIET, 9(10), 115-121. Article DOI https://doi.org/10.47001/IRJIET/2025.910015
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