Optimization of Self-Compacting Concrete Incorporating Granite Dust and Rice Husk Ash Using Response Surface Methodology

Concrete that can flow under its own weight, fully fill a space or formwork, and create a dense, suitably homogenous material without the requirement for compaction is known as self-compacting concrete, or SCC for short. Rice husk ash and granite dust were added to self-compacting concrete, which was optimized using response surface approach. At 3, 7, 28, and 90 days at an unchanged water-binder ratio of 0.46, the effectiveness of the granite dust and rice husk ash in self-compacting mixes of concrete was evaluated in terms of compressive strength and workability using the V-funnel, J-ring, and slump flow tests. The findings suggest that discarded granite dust and rice husk ash can be effectively used to make self-compacting concrete. The best percentage replacement values were found to be 10% for rice husk ash and 20% for granite dust in place of fine aggregate and cement. This approach allows for the production of self-compacting concrete compositions that are highly sustainable and efficient by optimizing the proportions of these two components.