Sustainable Ground Engineering: Advancements in Chemical Stabilization for Weak Soils

Abstract

Ground improvement is of paramount importance in both current and future geotechnical practices for the design of structures on weak soil. This paper provides a comprehensive review of the recent advancements in ground improvement techniques, with a particular focus on chemical stabilisers. Various chemical stabilisers are identified and compared with other existing methods. While the application of chemicals offers a promising alternative to traditional techniques, there remains a significant gap in understanding their use, handling, application, and long-term environmental impacts. The present paper summarises various chemical stabilisers along with their applicable conditions. Insights into biochemical, electrochemical, inorganic, and organic stabilisers are presented, along with the future potential of these methods and the areas requiring substantial efforts for their industrialisation. The review highlighted the necessity for developing more environmentally friendly and safer methods. A significant concern regarding the limited industrial use of these methods is the lack of extensive data. It is essential to conduct numerous laboratory and field experiments under varying conditions to ensure the safety and efficacy of chemical stabilisers.