Work

Investigating the Impact of Coal Bottom Ash on the Mechanical Performance of Self-Compacting Concrete Bricks

Year: 2026

Type: article

Abstract: This study investigates the impact of coal bottom ash (CBA) on the mechanical properties of self-compacting concrete bricks (SCCB) through experimental analysis. The primary aim is to determine how the partial replacement of fine aggregates with CBA affects critical mechanical characteristics. Experimental tests encompassed compressive strength, density, Young’s Modulus, and Poisson’s Ratio using CBA substitutions ranging from 10% to 30%. Results indicated that as CBA content increased, concrete density decreased, which is attributed to CBA’s lower specific gravity and higher water absorption properties. Notably, compressive strength improved up to a 20% CBA replacement, benefiting from enhanced particle packing and filler effects, with optimal strength observed at this level. The modulus of elasticity showed increased stiffness with CBA incorporation, particularly at lower replacement levels, while Poisson's ratio exhibited varied trends across different CBA percentages. This study enhances the understanding of SCCB performance when incorporating CBA, offering insights for optimizing material usage in sustainable construction practices and enhancing structural efficiency.

Source: Journal of Sustainable Civil Engineering and Technology

DOI: 10.24191/jscet.v5i1.jscet_s_000037

Authors: Qaisara Azizah Amranudin, Noor Irinah Omar, Warid Wazien Ahmad Zailani, Ilyani Akmar Abu Bakar

Institutions: Universiti Teknikal Malaysia Melaka, Universiti Teknologi MARA System, Universiti Teknologi MARA

Language: English

Topic: Materials Engineering and Processing

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: bronze

Funder: Universiti Teknologi MARA