A Literature Review on Influence of Subgrade Soil Stabilization Using Demolished Waste Concrete on Pavement Surface

The demand for new infrastructure and rapid urbanization has led to an escalation in pavement construction, concomitantly resulting in a notable quantity of construction and demolition waste, predominantly waste concrete. This research investigates the feasibility of employing Demolished Waste Concrete (DWC) as a stabilizing agent for subgrade soils in pavement structures. Laboratory tests were systematically conducted to assess the mechanical and geotechnical attributes of subgrade soil amalgamated with different proportions of crushed DWC. Preliminary findings unveiled that the DWC integration substantially augmented the bearing capacity, attenuated the soil's plasticity, and bolstered its overall resilience, an enhancement attributed to the pozzolanic reactions and particle interlocking provided by the waste concrete. A secondary focus of the study scrutinized the long-term performance of pavement surfaces laid atop the stabilized subgrade, evidencing diminished rutting, reduced surface irregularities, and an optimized load distribution capability.