Abstract
The glass was processed into a powder that could be blended with clay soil at 0%, 5%, 10%, and 15% to stabilize the soil, measured through four tests: liquid limit, plastic limit, soil compaction, and direct shear resistance. It is evident from the results that the ideal liquid limit test ratio is 15% because it makes the soil more efficient in deforming, improves its structure, reduces the water content needed to reach the liquid limit, and makes it more stable and harder. While, in the plastic limit test, 10% glass powder increased soil strength and decreased plasticity by decreasing the water content from which the soil moved from the plastic to the semi-solid state, lowering the plastic limit to 29.79. The addition of glass powder increased the maximum dry density from 5–10%, then dropped to 15% when the dry density reached 676.87 kg/m3. This is due to glass powder lowering soil porosity and permeability. Finally, in the direct shear strength test, 10% glass powder reduced vertical and horizontal deviation to 10.619 mm 2.251 mm. It can endure 0.274 kN before failing. By adding 10% glass powder, the soil becomes more durable and resistant, reducing horizontal and vertical compacting.