Evaluation of a new chemical stabilization method on physical and strength properties of cohesive soils

Chemical treatment methods are generally used to enhance strength and compressibility properties of soils. Chemical stabilized agents such as calcium based materials are known to cause the heave problem in sulfate rich soils. Non-calcium base stabilizers are needed to prevent heave problems. This research presents the study of a new liquid chemical stabilizer and its influence on the physical and strength properties of soils. The chemical stabilizer is comprised of sulfuric acid and lignosulfonate. Both raw and lime pretreated soils are considered. The research data showed the improvement of soil properties with the chemical treatment method. The effectiveness of the treatment appears to depend on the type of raw soil. Among the soils investigated, the sandy clay has undergone the best enhancement in the soil properties. Higher dilution and longer curing periods have further increased the soil strength properties.