Improving Concrete Characteristics using Sugarcane Bagasse Ash as a Partial Replacement for Fine Aggregate

Concrete is the backbone of modern construction, but producing it takes a serious toll on the environment, largely due to the massive consumption of natural resources. This study takes a closer look at an alternative that could help ease that burden: sugarcane bagasse ash (SBA). A byproduct of the sugar industry, SBA is rich in silica and has pozzolanic properties, making it a promising candidate to partially replace fine aggregate in concrete. In this research, SBA was used to replace sand in concrete at varying levels — 5%, 10%, 15%, and 20% — to see how it affects the mix's workability, strength, and long-term durability. The results were encouraging. At certain replacement levels, not only did the concrete maintain its structural integrity, but it also showed improved strength and resilience. Beyond the technical benefits, using SBA also helps address waste management issues and supports more sustainable building practices. By turning agricultural waste into a valuable construction material, this approach aligns with the goals of a circular economy — reducing environmental impact while creating cost-effective, eco-friendly concrete. Simply put, with the right balance, SBA has the potential to make concrete greener without sacrificing performance.