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@article{203843,
        author = {KARUMANCHI MEERAVALI and Regulagunta Madhu and VENKATESWARA RAO V and KATHI RAVINDRA and KOVURI JASWANTH SAI and BILLI SUMANTH and SALIMADUGU SIVA LAKSHMI REDDY and Ch Malleswara rao},
        title = {Investigation of Strength and Durability Properties of GGBFS Fly Ash-Based Geopolymer Concrete},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {1},
        pages = {1610-1620},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=203843},
        abstract = {This study investigates the strength and durability characteristics of geopolymer concrete prepared using varying proportions of fly ash and Ground Granulated Blast Furnace Slag (GGBFS) as binder materials. Geopolymer concrete offers an environmentally sustainable alternative to conventional Ordinary Portland Cement (OPC) concrete by utilizing industrial by-products activated with alkaline solutions. In this research, five different mix proportions (M1 to M5) were designed with increasing GGBFS content from 0% to 50%, replacing fly ash on a weight basis. The key parameters studied include workability (as measured by the slump test), compressive strength (at 7 and 28 days), split tensile strength, flexural strength, and water absorption under ambient curing conditions. The results demonstrated that increasing GGBFS content significantly enhanced both the fresh and hardened properties of geopolymer concrete. Compressive strength improved from 28.5 MPa in Mix M1 to 48.3 MPa in Mix M5 at 28 days. Similarly, tensile and flexural strengths increased with the incorporation of GGBFS due to the formation of an additional calcium-rich C-A-S-H gel, which contributed to a denser and stronger matrix. Water absorption decreased from 5.8% to 3.6%, indicating enhanced durability. The optimal performance was observed at 50% GGBFS replacement, suggesting that a balanced fly ash–GGBFS blend can produce high-performance geopolymer concrete suitable for structural applications without thermal curing. This research highlights the practical viability of ambient-cured geopolymer concrete for sustainable construction.},
        keywords = {Fly ash; GGBFS; Geopolymer concrete; mechanical properties; water absorption; sustainability.},
        month = {June},
        }