A Study on the Strength and Consolidation Characteristics of High-Concentrated Ash Slurry
DOI:
https://doi.org/10.5281/zenodo.15115821Keywords:
Ash Slurry, Geotechnical Properties, Strength, SustainabilityAbstract
High Concentration Slurry Disposal (HCSD) is a modern technique for disposing of fly ash generated in thermal power plants. This study investigates the geotechnical behavior of HCSD pond ash, focusing on its density, permeability, and compaction characteristics. Laboratory tests on samples collected from an ash pond at Vedanta Aluminium Limited, Jharsuguda, revealed that the dry density of pond ash remains stable at approximately 1.4 g/cc over time. The permeability of settled HCSD ash was found to be 1.3 × 10⁻⁴ cm/sec, which is comparable to that of conventional Lean Concentration Slurry Disposal (LCSD) systems, indicating no significant improvement in impermeability. Proctor compaction tests demonstrated that increased compaction effort results in higher maximum dry density (MDD) and lower optimum moisture content (OMC), making HCSD pond ash a suitable material for embankment construction. These findings highlight the potential for sustainable utilization of HCSD ash in infrastructure projects, offering an environmentally viable alternative for ash management.
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