Experimental Study on the Effect of Plastic Waste Strips and Waste Brick Powder on Strength Parameters of Expansive Soils

Expansive soils are found abundantly in Ethiopia. This type of is weaker, having low strength and load resisting characteristics nature due to their difficulty volume change when it comes into contact with water. The such becomes swell saturated water shrinks during dry seasons. In civil infrastructure construction, soil either should removed or improved be used as foundation soil. Removing the leads more extra costs construction. Improving, on other hand, requires increasing stiffness load-carrying capacity road by treating stabilizers, which helps achieving a cost good performance. study aimed at waste materials for improving against pressure, reduce environmental pollution. this study, locally available black cotton treated brick powder (20, 30, 40 %) plastic strips (0.25 %, 0.5 0.75 percentages weight. Different tests including atterberg limits, compaction, CBR, unconfined compressive were performed find an optimum percentage mixes. Many trials done varying PWS (plastic strips) BP (brick powder).  At addition 0.75% 30% BP, significant was observed huge improvement free values.