Suitability of Rice Husk Ash (RHA) with lime as a soil stabilizer in geotechnical applications

Abstract Soils containing significant levels of silt or clay generally exhibit unacceptable engineering properties (i.e. low strength, high compressibility and level volumetric changes) when exposed to variation in moisture content. Chemical stabilizers such as cement lime which are currently practiced, often high-priced unhygienic terms environmental sustainability. The prevailing study intended explore the potential local Rice Husk Ash (RHA) is an agricultural waste, with a soil stabilizer. This experimental was conducted on clayey plasticity. Different mixture proportions RHA 5%, 10%, 20% 30%) 10% 20%) were used treat parent soil. Observations made for variations index liquid limit, plastic sieve analysis, etc.) mechanical compressibility, permeability shear strength) treated soils soon 28 days after mixing. It found that by dry weight optimum dosage treatment. increases unconfined compressive strength internal friction angle 54.05% 60.48%, respectively reduces plasticity 56.67% at could be identified capable improving soil, positively.