Parte Shyam Singh and …show more content…
They studied the improvements in the properties of expansive soil with fly ash and lime in varying percentages. They performed test such as liquid limit, standard proctor compaction, and differential free swelling test obtained on expansive clays mixed at different proportions of lime and fly ash admixture. Results shows that the stabilized clay had lesser swelling potential whereas increase in optimum moisture content had been observed. From their results it was clear that a change of the expansive soil texture took place. When lime & fly ash are mixed with the expansive soil, the Plastic limit increased by mixing lime and liquid limit decreased by mixing fly ash, which decreases plasticity index. With increase in the amount of fly ash & lime there was deduction in modified dry density & free swell index. Optimum moisture content was also reduced. From their work it is clear that the mixing expansive soil in certain proportion with lime and fly ash is an effective way to handle the problem of shrinkage, swelling and unequal