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Study of Waste Ceramic Dust’s Impact on the Strength Characteristics of the Subgrade of the Flexible Pavement
Abstract
Soil stabilization is necessary when the soil does not meet the engineering requirements for construction or use as a subgrade in pavements, whether flexible or rigid. To enhance the soil's engineering properties, additives can be mixed in, and waste which is in solid state can be used as a stabilizer for both economic and environmental reasons. Solid waste comes in various forms, including agricultural, industrial, and mineral waste. Although some of these wastes can be lethal to the environment, they can have a positive effect on soil strength when processed as a stabilizer.
Numerous studies have been conducted to enhance soil properties, and this study focuses on observing the impact of adding Ceramic dust, an industrial waste in dust form, on soil properties. By using Ceramic dust as a stabilizer, several soil properties of geotechnical consideration, such as the UCS and California bearing ratio, can be enhanced, both of which are crucial for determining soil strength.
Results from California Bearing Ratio (CBR) tests indicate that incorporating Ceramic dust into subgrade soil increases subgrade soil strength effectively. The CBR value was found to enhance up to a certain percentage with an increase in Ceramic Dust. The study also showed that by modifying the soil with Ceramic dust, flexible pavement can be designed, and at the optimum content of Ceramic dust, the highest CBR achieved, leading to a reduction in pavement thickness and construction costs.
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