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@article{203839,
        author = {KARUMANCHI MEERAVALI and Ch Malleswara rao and BANDARU NAGARJUNA and ADDANKI SRIHARI and JOHN RAJESH and NULAKACHANDANAM VINOD KUMAR and SUNKU DHANUNJAYA and Regulagunta Madhu},
        title = {Effect of Admixture Combinations on the Fresh and Hardened Properties of Self-Compacting Concrete},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {1},
        pages = {1634-1644},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=203839},
        abstract = {Self-Compacting Concrete (SCC) is an innovative construction material that flows under its own weight without the need for mechanical vibration, making it ideal for complex and heavily reinforced structural elements. This study investigates the combined effect of chemical admixtures superplasticizer and viscosity modifying agent (VMA) alongside mineral admixtures such as fly ash and silica fume on the fresh, mechanical, and durability properties of SCC. Three Mix-variations were prepared: a control Mix-with only cement, a binary blend with fly ash, and a ternary blend with both fly ash and silica fume. All mixes were designed with a low water-to-binder (w/b) ratio of 0.31–0.35 and tested for fresh properties (slump flow, V-funnel, L-box), strength characteristics (compressive, split tensile, flexural), and durability performance (RCPT and water absorption). The results showed that the inclusion of fly ash improved flow ability and long-term strength, while the addition of silica fume enhanced cohesiveness, early strength, and durability. Among all mixes, the ternary blend (Mix-3) exhibited superior performance with a slump flow of 755 mm, L-box ratio of 0.96, compressive strength of 51.3 MPa at 28 days, and the lowest RCPT value of 890 coulombs, indicating very low permeability. These improvements were attributed to the synergistic effect of the fine particles and pozzolanic reactions of the mineral admixtures, combined with the optimized dosage of chemical admixtures.},
        keywords = {Self-compacting concrete; viscosity modifying agent (VMA); Mechanical properties; Durability studies; Admixtures.},
        month = {June},
        }