Study on the Concrete Strength Development with Power Plant Waste as an Aggregate Replacement

Concrete is the most widely utilized construction material due to its design adaptability, availability, and cost effectiveness. Concurrently, the production of power plant waste had become one the major issues in the disposal process that can cause harm toward environmental and economic consequences. The aims of this paper is to compare the strength development of concrete incorporate coal bottom ash (CBA) and fly ash (FA) as a partial and full replacement in concrete. A variety of mix designs were developed based on the varied CBA and FA replacements. CBA is used to replace 50% of fine and coarse aggregate content for partial replacement, and 100% of aggregate content as fine and coarse material for a complete replacement. The FA was utilized as a 20% substitute in cement. The test pieces are manufactured in 100 mm × 100 mm × 100 mm cubes, and all samples are wet cured for a set duration before the compressive strength and water absorption tests. Result shows that the maximum potential of coal ash can be used as 100% replacement. The findings also show that the concrete integration of CBA and FA exhibits a remarkable strength development when compared with the normal concrete. According to the findings of this study, using ground CBA as a material in concrete improves its resilience to harsh environments.