Investigating geotechnical properties of soils using ground granulated blast furnace slag, fly ash, and lignosulfonates

A number of ways exist to measure the level of soil improvement after administering a ground improvement application, but stabilisation is the one most frequently used. The term "soil stabilisation" describes the changing of a natural soil for construction or engineering purposes. Stabilisation will often have the purpose of making soils stronger by incorporating waste materials. Traditional chemical stabilisers, though, may not find ready acceptance in engineering construction because quicklime and cement are not renewable, their production involves consumption of large amounts of energy, they release considerable volumes of greenhouse gases and the brittleness of the resulting stabilised soils can affect structures' stability. This study presents the effect of using unary, binary and ternary blends of Ground Granulated Blast Furnace Slag (S), Fly Ash (FA) and Lignosulfonate (LS) as the stabilizer to investigate soil properties. For this, two soil mixture groups were designed depending on soil types with changing binder contents. disposal materials were used in partial substitution of soil1 and soils2 at 0%, 6%, 8%, and 10% by weight. The results show that among different way of replacements, soils containing 8% of disposal materials exhibited the best results of California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS), atterberg limits, and permeability coefficient at 28 days. The stabilizer soils containing ternary binder materials (S, FA, and LS) gave better results than binary then unary replacements.