Expansive Soil Subgrade: Soil Treatment Using Waste Ceramic Dust and Cement

Abstract

AbstractThis study examines the potential application of leftover ceramic dust for stabilising expansive soil in infrastructure projects. We know that expansive soils have low strength and bearing capacity, which makes them troublesome in the natural world. Therefore, it’s crucial to level off weak or powerless soil to increase the sublevel’s bearing limit and support a suitable, long-lasting wearing course. To stabilise the soil, the poor soil was taken from Yenagoa, Bayelsa state in the South-South region of Nigeria, and mixed with varying amounts of waste ceramic dust. Standard Proctor compaction, soaked/unsoaked CBR testing, unconfined compressive strength tests, and consistency limit tests were used to evaluate the applicability of stabilised soil. The OMC appreciated at 7.5% of CD, which was utilized as an additive at 17.9 KN/m2, according to the results. From 1.72 to 1.74 KN/m2, MDD increased. From 9.3% at 0% to 16.77% (unsoaked) at 10% admixture (WCD + PLC) and 2.60% at 0%, according to the CBR test results, there was a rise. The highest (CBR) value was obtained when the mixture was soaked to 11.52%, as opposed to 16.77% when it was unsoaked. It was revealed that stabilisation in UCS improved with replacement ratios of 2.5%, 5%, 7.5%, and 10%, in that order. In conclusion, it was found that expanding soil stabilisation can be achieved without failure by using the ideal mix design.