SOIL STABILIZATION USING TERRASIL AND GGBS FOR PAVEMENT SUBGRADE MATERIAL

When the amount of moisture in the soil fluctuates, expansive soil has a tendency to expand and contract, losing its ability to sustain the structure above it and eventually collapse. It can be prevented by increasing and stabilizing the soil’s characteristics. Today, nanomaterials have a bigger impact on our daily life. A crucial element in the design of both flexible and rigid pavement constructions is the subgrade soil. High moisture susceptibility and subgrade settlement, which result in the subgrade losing strength, are the main reasons for pavement failure. The pavements built on these types of soil typically deteriorate over time. In order to operate vehicles more efficiently and effectively, which calls for decent roadways, appropriate geometric design, and pavement condition maintenance, the population is growing. Without a question, road transportation is the backbone of the country and its development is of utmost importance. The soil stabilization method aids in obtaining the necessary qualities of a soil for the construction of pavement. Lack of strength is one of the main causes of pavement failure. By varying the proportions of additive materials in the sub-grade, strength can be improved. Using laboratory testing, the ideal concentrations of GGBS and Terrasil were discovered to be 15% and 0.6% respectively. Finally, the experimental results of prepared soil combinations were ana- lysed to obtain plasticity, UCS, CBR and compaction parameters. Addition of optimum percentage of GGBS and Terrasil reduced the plastic behaviour of soil and increased the UCS, CBR and compaction characteristics.