Utilization of powdered glass in lime-stabilized clayey soil with sea water

Abstract

The waste glass is one of the huge volume construction and demolition (C&D) debris and using it in the construction, significantly reduces the area required for the storage and contributes to the conservation of natural resources while reducing the carbon footprint. In the light of these data, the answer to the question of whether glass powder could be considered as a stabilizing additive with sea water in lime-stabilized clayey soil so that clayey soil could be used in road pavement and embankment construction has been investigated. A series of experimental studies conducted to determine the effect of additives on the geotechnical properties of the clayey soil such as moisture-density relationships, strength, and consistency. The samples were prepared by blending 5% lime and different percentages of powdered glass such as 10%, 20% and 25% with three different clayey soil that were used as subgrade soil. The results of the tests indicate that powdered glass, sea water and clayey soils are very compatible to react with each other and additives improve geotechnical properties of clayey soils in a way so that it decreases plasticity index and increases workability of clayey soils. In addition, the additives increase California bearing ratio and unconfined compressive strength of clayey soils up to ten times depending on usage rates.