Effect of Waste Glass Powder on the Swelling and Strength Characteristic of District Karak Expansive Clay

Abstract

Expansive soils are generally considered problematic due to undesirable geotechnical characteristics like expansion, shrinking, settlement, and heaving. Such soils have low shear strength which decreases after wetting or other physical aggravations. Subsequently, such soils need proper improvement before constructing a structure on them. Different industrial wastes have been used for the stabilization of weak soil in the past. In the current investigation, the impact of waste glass powder (WGP) on the strength and swelling characteristic of swelling soils have been assessed. The primary target of this examination was to research the utilization of waste glass powder in geotechnical applications for controlling the settlement and expanding qualities. For this reason, the local expansive soil of district Karak, Pakistan was selected and their engineering properties were assessed. The experimental work consists of conducting the consistency limits, California bearing ratio (CBR), specific gravity standard Procter tests. The mentioned tests were carried out on both natural as well as modified specimens. For modification purposes, waste glass powder (WGP) was added in different proportions with the incremental rate of 4%, for instant 0%, 4%, 8%, 12%, 16%, and 20%. The addition of waste glass powder greatly reduced the swelling properties of the tested soil and also improved the engineering characteristics. A maximum reduction in swelling was observed at 20% addition of waste glass powder. Similarly, the liquid limid also reduced, and the specific gravity and maximum dry density increased at optimum glass powder content.

Use of waste glass powder in improving the properties of expansive clay soils

“…This behavior agrees with the findings of several researchers, e.g. Zamin et al (2021) added up to 20% of WGP. The liquid limit dropped from 52.5% to 36%.…”

“…Another study by Arrieta Baldovino et al (2020) using recycled glass powder to improve silty soil properties in Brazil showed that recycled glass wastes increased durability and strength properties. The study by Zamin et al (2021) showed a reduction in the swelling potentials of waste glass powder modified expansive soils. All the studies mentioned showed the successful application of recycled glass powder as a soil stabilizer in the countries where it was applied.…”

Sustainable use of soda lime glass powder (SLGP) in expansive soil stabilization

“…Pakistan generates a lot of glass waste, which is dumped in fields near the country's manufacturing hubs. The harmful effects on the environment can be mitigated through recycling and the use of the SLGP for soil stabilization [35]. As reported by the Environmental Protection Agency (EPA) of Azad Jammu and Kashmir, about 7 tonnes of waste glass is generated daily across different locations including Mirpur Industrial Area, Jhelum, Bhimber, and Chaksawari region.…”

Utilization of Waste Steel Slag, Fly Ash, Glass Bottle Powder for Swamp Soil Stabilization

“…The addition of waste glass powder with variations of 0%, 4%, 8%, 12%, 16%, and 20% with expansive soils can increase the specific gravity and maximum dry density values, reduce soil swelling, reduce soil liquid limit values, with optimum variations waste glass powder at 20% variation. [4] The research used steel slag and fly ash, with varying percentages of 0%, 10%, 20%, and 30% steel slag and 0% and 20% fly ash, and curing for 0 days, 3 days, and 7 days. Based on this research, the results obtained a plasticity index of 24.59% and the highest CBR value in the addition of 20% steel slag and 20% fly ash, and 7 days of curing time.…”