Geotechnical investigation of low-plasticity organic soil treated with nano-calcium carbonate

Soil stabilization using nanomaterials is an emerging research area although, to date, its investigation has mostly been laboratory-based and therefore requires extensive study for transfer practical field applications. The present advocates nano-calcium carbonate (NCC) material, a relatively unexplored nanomaterial additive, of low-plasticity fine-grained soil having moderate organic content. plasticity index, compaction, unconfined compressive strength (UCS), compressibility permeability characteristics the 0.2%, 0.4%, 0.6% 0.8% NCC-treated soil, untreated (as control), were determined, including investigations effect up 90-d curing on UCS properties. In terms improvement, 0.4% NCC addition was identified as optimum dosage, mobilizing at almost twice that soil. For treated particle aggregation arising from initially produced increase in coefficient, but magnitude decreased increased owing calcium silicate hydrate (CSH) gel formation, although still remaining higher compared all dosages periods investigated. Compression index SEM micrographs indicated presence patches along with aggregation. X-ray diffraction (XRD) results showed hydration products, such CSH. Significant increases are attributed void filling then because CSH formation curing. • Optimum dosage improved by 1.94 times Permeability upto ageing. reduced addition. Early due ageing products enhanced strength.