In a groundbreaking study published in ‘Discover Civil Engineering’, Olaolu George Fadugba from the Department of Civil Engineering at the Federal University of Technology Akure has unveiled promising advancements in soil stabilization techniques that could revolutionize highway infrastructure. This research is particularly significant as it aligns with the United Nations’ Sustainable Development Goals, specifically emphasizing responsible consumption and sustainable infrastructure development.
Fadugba’s research focuses on the incorporation of waste materials—specifically lime, pulverized snail shell (PSS), and sawdust ash—into lateritic soil to enhance its mechanical properties. This innovative approach not only addresses the pressing issue of waste management but also promotes a circular economy by repurposing materials that would otherwise contribute to landfill waste. “By utilizing these waste materials, we not only improve soil stability but also contribute to a more sustainable construction practice,” Fadugba stated, highlighting the dual benefits of environmental responsibility and enhanced material performance.
The study conducted a series of tests to evaluate the effectiveness of these additives. The results were striking: the combination of 6% lime and 7.5% PSS yielded an impressive unconfined compressive strength (UCS) of 302 kPa after 28 days of curing, compared to just 121 kPa for untreated soil. This dramatic increase underscores the potential of these materials to significantly improve the durability and reliability of road construction.
Moreover, the research revealed that the treated soil exhibited lower permeability and higher resistance to compression and deformation, making it an ideal candidate for sub-base materials in highway projects. With a soaked California Bearing Ratio (CBR) value of 38%, the enhanced soil meets the necessary criteria for sustainable infrastructure, paving the way for more resilient road systems.
The implications of this research extend beyond mere academic interest; they present commercial opportunities for the construction sector. As the industry faces increasing pressure to adopt sustainable practices, the findings from Fadugba’s work could lead to cost-effective solutions that reduce material expenses while enhancing structural integrity. “This research not only offers a viable alternative to traditional soil stabilization methods but also opens doors for the construction industry to embrace sustainability without compromising on quality,” Fadugba added.
As highway infrastructure continues to evolve, integrating such innovative materials could become a standard practice, shaping future developments in civil engineering. The use of waste materials like PSS and sawdust ash could redefine how infrastructure projects are approached, emphasizing sustainability while addressing the growing concerns of environmental impact.
For further insights into this transformative research, you can explore the work of Olaolu George Fadugba at the Federal University of Technology Akure. The findings, which are a testament to the potential of sustainable practices in construction, are detailed in the recent publication in ‘Discover Civil Engineering’, translating to a significant step forward in the quest for environmentally friendly infrastructure solutions.