Strength Enhancement of Soil Using MICP and Fiber Reinforcement
摘要
Landslides are a major natural hazard that pose significant risks to infrastructure and human safety. Traditional mitigation methods often lack long-term effectiveness and sustainability. This study explores the application of Microbial Induced Calcite Precipitation (MICP) as an innovative and eco-friendly solution to enhance landslide stability. MICP strengthens soil by inducing calcite precipitation but can lead to increased brittleness, which may limit its performance in certain conditions. To address this, the study incorporates natural jute fibers and synthetic polypropylene fibers into the MICP-treated soil to improve its ductility and resilience. UCS of clay improved from 179 kN/m2 (untreated) to 330 kN/m2 with 0.4% polypropylene and 320 kN/m2 with 2% jute fibers. MICP alone increased UCS to 900 kN/m2 in 14 days, while combining MICP with optimal fiber content yielded peak strengths of 1250 kN/m2 (polypropylene) and 1000 kN/m2 (jute), demonstrating a synergistic effect. By combining MICP technology with fiber reinforcement, this paper aims to develop a more effective and sustainable approach to landslide mitigation, balancing soil strength and flexibility for improved performance.