Structural Effect of Well-Graded Coal Bottom Ash in Improving Mechanical and Thermal Properties of Normal Concrete

• Main Authors: Beddu S., Basri N.A.N., Kamal N.M., Mohamad D., Sukhvinder P., Zailani W.W.A.
• Other Authors: 55812080500
• Format: Conference Paper
• Published: Springer Science and Business Media Deutschland GmbH 2024
• Subjects: Coal bottom ash; Concrete; Mechanical properties; Sustainability; Ash handling; Ashes; Compressive strength; Concretes; Sustainable development; Thermal conductivity; Bottom ash; Graded coals; Mechanical and thermal properties; Mix designs; Normal concretes; Strength development; Structural effect; Coal

Concrete is one of the most widely and world�s oldest used construction materials, due to its versatility, durability, sustainability, and economy. This study presents the way of improving normal coal bottom ash to well-graded coal bottom ash and to investigate the effects of workability, mechanical properties, and thermal properties of normal concrete when partially replaced with well-graded coal bottom ash with sand. It was observed that the workability of the concrete showed a slight increase with normal concrete containing well-graded coal bottom ash. The compressive strength of well-graded coal bottom ash achieved the designed mix design which was 40�Mpa at the ages of 3, 7, and 28�days compared to controlled concrete. The thermal conductivity of well-graded coal bottom ash concrete showed a decrease in value compared to controlled concrete. This research concluded that 80% of well-graded coal bottom ash concrete was the optimum percentage replacement which will help achieve the beneficial strength development. � 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.