International Journal of Science, Engineering and TechnologyAuthors: Mora Raja Kumar, Dr.K.Naga Sreenivasa Rao
Abstract: Self-Compacting Concrete (SCC) has emerged as an advanced construction material due to its ability to flow under its own weight, completely fill formwork, and achieve full compaction without the need for external vibration. This experimental study investigates the influence of selected mineral admixtures on the fresh and hardened properties of SCC, aiming to enhance its performance and sustainability. Mineral admixtures such as fly ash, ground granulated blast furnace slag (GGBS), and silica fume were used as partial replacements of cement at varying proportions. The fresh properties of SCC were evaluated using standard tests including slump flow, T₅₀ time, V-funnel, and L-box tests to assess filling ability, passing ability, and segregation resistance. Hardened properties were examined through compressive strength, split tensile strength, and flexural strength tests at different curing ages. The results indicate that the incorporation of mineral admixtures significantly improves the workability, flow characteristics, and long-term strength of SCC while reducing cement content and heat of hydration. Among the mixtures studied, SCC incorporating an optimum combination of mineral admixtures exhibited superior performance compared to conventional SCC. The study confirms that the effective use of mineral admixtures in SCC not only enhances mechanical and rheological properties but also contributes to sustainable and eco-friendly concrete production.
