Vol. 10, Special Issue 1, Part L (2026)

With rapid advancements in technology globally, the use of plastics such as polyethylene bags, bottles etc. is also increasing. The disposal of thrown away wastes pose a serious challenge since most of the plastic wastes are non-bio degradable and unfit for incineration as they emit harmful gases. Soil stabilization improves the engineering properties of weak soils by controlled compaction or adding stabilizers like cement, lime etc. but these additives also have become expensive in recent years .In recent years, stabilizer such as lime, cement and fly ash have become prohibitively expensive for soil stabilization. In some circumstances, solid waste production, particularly garbage from plastic products, is increasing uncontrollably and continuously. Given the rapid increase in plastic waste and the rising expense of additives in recent years, the current study focuses on treating the soil with plastic waste as a soil stabilizer to enhance the soil's bearing capacity. This prospective study aimed to determine the index properties, review past research on the engineering properties and develop a hypothesis on the optimum proportion of plastic waste to be employed in the soil for engineering applications. This research paper examines the use of plastic waste from polyethylene terephthalate (PET) plastic bottle shreds as a stabilizer, which necessitates a review of previous research studies and several investigations following the British Standard (BS), many techniques are used to improve the Complexity of soil. This paper presents a detailed study on the behavior and use of waste plastic in soil improvement. Experimental investigation on reinforced plastic soil results showed that, plastic can be used as an effective stabilizer so as to encounter waste disposal problem as well as an economical solution for stabilizing weak soils. Plastic reinforced soil behaves like a fiber reinforced soil.