Sustainable Soil Stabilization: Innovations, Environmentally Friendly Additives, and Future Perspectives | ||
| Suez Canal Engineering, Energy and Environmental Science | ||
| Volume 3, Issue 4, October 2025, Pages 80-88 PDF (521.98 K) | ||
| Document Type: Review Article | ||
| DOI: 10.21608/sceee.2025.399796.1087 | ||
| Authors | ||
| Mohamed Abdelsalam Elshawadfy* ; Abeer Abdelmoniem El Shahawy; Azza Hassan Moubarak; Mai Mahmoud Shams | ||
| Suez canal university, faculty of engineering, department of civil engineering, Ismailia, Egypt | ||
| Abstract | ||
| Soil stabilization plays a critical role in enhancing the mechanical properties of weak or expansive soils, thereby supporting infrastructure development. Conventional technologies, particularly cement and lime, have generated significant environmental concerns due to excessive energy consumption and carbon emissions. In response, sustainable soil stabilizing solutions using eco-friendly and waste-derived additives have attracted substantial attention. This review consolidates the latest advancements in sustainable soil stabilization, with a focus on the performance and mechanisms of various green additives, including agricultural wastes (e.g., rice husk ash, sugarcane bagasse ash), industrial by-products (e.g., fly ash, GGBFS, red mud), municipal solid waste derivatives (e.g., sewage sludge ash), and emerging materials such as recycled plastics and nano-additives. Key stabilization mechanisms, including pozzolanic reactions, microbial-induced calcite precipitation, and polymer bonding, are assessed alongside critical performance measures, including unconfined compressive strength (UCS), California Bearing Ratio (CBR), plasticity index, and permeability. Life cycle assessments reveal that sustainable additives can cut CO₂ emissions by up to 50% compared to typical binders. Challenges related to material unpredictability, regulatory limitations, and environmental risks, such as leaching, are also explored. Innovations such as AI-driven design models, genetically modified microorganisms, and hybrid stabilizing systems are highlighted as potential avenues for future development. This study highlights the need for interdisciplinary research, standardization of testing methodologies, and legislative support to transition from conventional to sustainable stabilizing practices, paving the way for greener and more robust infrastructure. | ||
| Keywords | ||
| Sustainable Soil Stabilization; Eco-friendly binders; Waste-derived additives; Agricultural and industrial by-products; Recycled polymers and nanomaterials | ||
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