Speaker
Description
Biocementation, an emerging soil improvement technology utilizing microbial-induced carbonate precipitation (MICP), offers sustainable and environmentally friendly solutions for geotechnical challenges. The technology has been proven effective on a variety of studies for enhancing soil mechanical properties especially in laboratory-controlled conditions. Less evidence is available regarding the feasibility and results of the technology application in real environments for specific soil stabilization challenges. This paper presents insights from a comprehensive case study focused on applying biocementation technology for slope stabilization in real-world environments. The study was conducted at a designated project site, part of a highway construction development in Transylvania, Romania to address challenges associated with unstable slopes prone to erosion and landslides. The experiment on the pilot site highlighted the challenges of implementing MICP under variable environmental conditions, such as fluctuating moisture levels, heterogeneous soil profiles, and operational constraints, providing valuable lessons for future applications. The findings underline the scalability and adaptability of biocementation in addressing critical geotechnical problems while minimizing environmental impact. Compared to conventional soil stabilization methods, such as chemical grouting, biocementation offers reduced carbon emissions and aligns with the principles of sustainable engineering. Furthermore, the study explores the long-term durability and environmental compatibility of biocemented soils, emphasizing the role of microbial activity and carbonate persistence under changing environmental conditions.
This paper contributes to the advancement of biocementation technology by demonstrating its practical application for slope stabilization, offering insights into optimizing the process for real-world challenges.
| References | R.Harran, D.Terzis, and L.Laloui - Addressing the challenges of homogeneity, quality control and waste handling in soil bio-cementation: A large-scale experiment., Soils and Foundations, Volume 63, Issue 4, 2023 R.Harran, D.Terzis, and L.Laloui - Characterizing the Deformation Evolution with Stress and Time of Biocemented Sands, Journal of Geotechnical and Geoenvironmental Engineering, Volume 148, Issue 10, 2022 Roy, N., Frost, J.D. and Terzis, D., - 3-D contact and pore network analysis of MICP cemented sands. Granular Matter, 25(4), p.62., 2023 |
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| Country | Romania |
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