Utilization of Steel Slag for Stabilization of Subgrade Soil

As a developing nation, India is presently undergoing transformation. With rising population and rapid urbanization, demand for sustainable transportation facilities is skyrocketing. Highway engineers frequently struggle to find the right material for highway construction. On other hand, rapid urbanization has led to a surge in infrastructure and development projects, skyrocketing steel consumption. India is the second-largest steel producer, trailing only China. Integrated steel plants in India produce 2–4 tons of slag per ton of steel, which is then stock-piled. Waste disposal in an environmentally friendly manner is a major concern. Current study investigates possible utilization of steel slag for stabilization of dredged soil when used along with traditional stabilizing agent. Proposed study helps identify the effect of addition of slag and cement on strength characteristics of composite mix. It is also extended to investigate the effect of curing on strength characteristics. Current study also tries to analyze the effect of providing 500-mm-thick stabilized capping subgrade on design parameters such as vertical compressive strain, horizontal tensile strain at critical locations with the help of IITPAVE software.