Evaluation the Effects of Waste Glass Powder Mixed with Hydrated Lime on the Unconfined Compressive Strength of Clayey Soil

Abstract

Stabilization of clayey soil is commonly used to enhance unfavorable engineering properties. The effects of silica additives on soil improvement have been considered recently, and documented research studies on the characteristics of problematic clays stabilized by silica additives are interesting for many researchers. Alternative waste disposal strategies that would be both economically beneficial and environmentally friendly have been identified by this study. In the present study, waste silica-based addition is used to stabilize clayey soil, and the time-dependent changes in strength properties are investigated. Unconfined compressive strength (UCS) tests were conducted on stabilized samples at various curing durations to investigate macro-level properties. The UCS test results revealed that the 7.5% of GP+ 5% L content was optimal for the clayey soil as the strength was increased by 166.06%. The addition of the glass powder with hydrated lime components to the clayey soil resulted in stabilized samples, indicating a dense and compact matrix and reduced soil porosity, which increased the mechanical strength, according to the SEM analysis. This curing reaction technique is very beneficial and economical for geotechnical engineering applications.

Pine cone ash stabilization of expansive soils

“…The use of PC ash facilitated aggregation and cementation within the clay fines, which contributed to significant changes in plasticity and thus a reduction in the compressibility behavior of the treated soils. The drastic reduction in compressibility characteristics found in this study is consistent with the results reported in studies conducted by Sharo et al (2022) and Salih et al (2023). A notable trend was observed wherein a decrease in Cc, Cr, and Sp was accompanied by an increase in σp for PC ash additions of 3%, 5%, 7%, and 10%, respectively.…”