Shrinkage Behaviour of Self-Compacting Concrete with Higher Binder Content: Experimental Results and Predictive Equation

Abstract This research breaks new ground in self-compacting concrete (SCC) by exploring the benefits of incorporating more binder. We investigate three concrete mixtures with varying binder content (550, 600, and 650 kg/m 3) to assess their workability, compressive strength, and shrinkage. Our findings reveal a significant increase in strength throughout the concrete's lifespan with higher binder content. Additionally, the mix exhibits enhanced stability and cohesion. The research also explores the cost-effective use of fly ash as a partial binder replacement, reducing the reliance on expensive superplasticizers. However, existing prediction models (IS 1343-2012, BS EN 1992-1-1-2004, and ACI 209 R-92) were found inaccurate for high-binder SCC shrinkage. To address this gap, we propose a novel equation for predicting shrinkage in SCC with increased binder content, based on our experimental data. This innovative approach paves the way for the optimized design and cost-effective use of high-strength SCC in construction projects.