Document Type : Original Research Paper

Authors

• Ritu Bala Garg ¹
• Gurpreet Singh ²

¹ Punjabi University Patiala

² Department of Civil Engineering,Punjabi University,Patiala

Abstract

This study presents a comprehensive investigation into the synergistic use of fly ash (FA), coal bottom ash (CBA), and quarry dust (QD) as partial replacements for conventional construction materials, aiming to mitigate environmental degradation while enhancing material performance. Individually and in combination, a series of concrete mixes were prepared incorporating these wastes at varying proportions, and were tested for workability, compressive strength, and durability (water absorption and chloride ion penetration). Results indicate that blends of FA, CBA, and QD can effectively substitute up to 40% of cement and fine aggregates without compromising structural performance. The mixes containing 20% fly ash, 10% bottom ash, and 10% quarry dust exhibited superior compressive, split tensile, and flexural strength, and reduced water absorption and chloride ion penetration, demonstrating their potential in aggressive environments.

Keywords

• Fly ash
• Coal bottom ash
• Quarry dust
• Sustainable construction
• Mining waste reuse

Main Subjects

• Environmental Management