Biopolymer-biocement composite treatment for stabilisation of soil against both current and wave erosion

Abstract Increased frequency of extreme weather events has made the conservation riverbanks and coastlines a global concern. Soil stabilisation via microbially induced calcite precipitation (MICP) is one most eco-suitable candidates for improving resilience against erosion. In this study, erosion characteristics soil treated with various levels biocementation are investigated. The samples were subjected to hydraulic flow in both tangential perpendicular directions flume simulate riverbank coastal situations. mass loss, eroded volume, cumulative rates applied energy density have been reported. Post exposure, residual assessed its properties using needle penetration resistance, precipitated calcium carbonate content microstructure. It was observed that declined exponentially increase waves. However, leads brittle fracture beyond threshold, limiting efficacy, especially Additional composite treatment biopolymer found improve specimens required half quantity biocementing reagents comparison equally erosion-resistant plain biocemented sample. Therefore, stoichiometrically likely yield 50% lesser ammonia than biocement treatment. This investigation unravels promising technique effect biopolymer.