Paper Key : IRJ************919
Author: Alka Kerketta
Date Published: 27 Oct 2023
Abstract
The escalating demand in the construction sector is causing the depletion of construction materials, like sand. In response, coal bottom ash (CBA) is being explored as a sand substitute. CBA is a by-product of coal combustion in power plants, featuring angular, irregular, porous particles with a rough surface texture. It shares visual and particle size characteristics with river sand, making it an appealing fine aggregate replacement in concrete .The study's objectives are to assess the properties of CBA concrete and determine the optimal CBA percentage for fine aggregate replacement. This experiment aims to not only conserve natural resources and reduce energy consumption but also recycle industrial by-products .In this project, we investigate the fresh, hardened, and durability properties of bottom ash concrete, considering factors such as the slump test, compressive strength, flexural strength and water absorption test. Sand is replaced with CBA at rate of 0%, 15%, and 35% by weight, while maintaining a constant water-cement ratio of 0.45. Fresh concrete slumps within the range of 70mm-130mm.The findings of this project seek to clarify the suitability of CBA as a fine aggregate in mortar and concrete for the construction industry and identify any limitations associated with its use. It was observed that up to 15-20% replacement compressive strength, flexural strength and water absorption is benefited after that quality of concrete deteriorates.
DOI LINK : 10.56726/IRJMETS45556 https://www.doi.org/10.56726/IRJMETS45556