Investigating stability, homogeneity, and bleeding in self-compacting concrete: new experimental analysis

Self-compacting concrete (SCC) represents a significant advancement in concrete technology, providing solutions to traditional challenges associated with concrete placement. Despite its many advantages, SCC faces difficulties in maintaining coherence, stability, and resistance to segregation. This study examines the properties and behaviors of SCC, focusing on stability, homogeneity, bleeding, and their relationships with various rheological parameters. The research uses experimental analysis and correlation studies to elucidate these phenomena. In this work, we employed new experimental tools to assess water accumulation due to bleeding and evaluate SCC stability and homogeneity using the ultrasonic velocity method. Experimental and regression analyses further elucidate the robust relationship between these new parameters and rheological characteristics, providing valuable information for the optimization of SCC mixtures.