In the heart of Nigeria, a groundbreaking study is reshaping how we understand and utilize lateritic soils for road construction, with significant implications for the energy sector’s infrastructure development. Led by Bamidele Alade from the Department of Civil Engineering at the Federal University Oye Ekiti, this research delves into the geotechnical properties of lateritic soils from borrow pits in Ado Ekiti, offering insights that could revolutionize construction practices in tropical regions.
Lateritic soils, abundant in tropical climates, have long been a staple in road construction. However, their performance varies greatly depending on their specific geotechnical properties. Alade’s study, published in the ABUAD Journal of Engineering Research and Development, which translates to the Afe Babalola University Ado Ekiti Journal of Engineering Research and Development, sheds light on these variations, providing a roadmap for more informed and efficient construction practices.
The research focuses on four borrow pits, each yielding unique soil characteristics. Borrow Pit A, classified as Silty Sand (SM), stood out with its high Maximum Dry Density (MDD) and low Optimum Moisture Content, making it an ideal candidate for subbase applications. “The soils from Borrow Pit A showed exceptional properties,” Alade noted, “with unsoaked CBR values of 70%–75%, they are perfect for supporting heavy loads, a crucial factor for energy sector infrastructure.”
Borrow Pit B, categorized as Clayey Sand (SC), offered moderate MDD values and adequate permeability, suitable for improved subgrades or low-traffic subbases. However, Borrow Pits C and D, classified as Low Plasticity Clay (CL), presented challenges with lower MDD values and higher fines content, making them more suited for subgrade applications but requiring stabilization treatments to enhance their strength and plasticity.
The commercial impacts of this research are profound. For the energy sector, which often operates in remote, tropical regions, understanding the geotechnical properties of local soils is crucial for building durable and cost-effective infrastructure. Roads built with stabilized lateritic soils can withstand heavy loads and harsh weather conditions, reducing maintenance costs and downtime.
Moreover, this study highlights the importance of soil stabilization techniques. By treating soils with lime or cement, engineers can significantly improve their strength and plasticity, expanding the range of suitable materials for construction. This could lead to a reduction in the need for imported materials, lowering costs and environmental impact.
As we look to the future, Alade’s research paves the way for more sustainable and efficient construction practices. By leveraging local materials and advanced stabilization techniques, the energy sector can build more resilient infrastructure, supporting economic growth and development in tropical regions. This study is not just about soils; it’s about building a stronger foundation for the future.