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@article{203860,
        author = {KARUMANCHI MEERAVALI and AGUDA TEJA and K MADHU KUMAR REDDY and MACHA GANESH and REPANA SAI PRATHAP and Ch Malleswara rao},
        title = {Development of Eco-Friendly Concrete Composites Using Recycled Concrete Aggregates and Green Cement},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {1},
        pages = {2112-2121},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=203860},
        abstract = {The construction industry's increasing demand for sustainable practices has led to the exploration of alternative materials to reduce environmental impact. This study investigates the feasibility of using Recycled Concrete Aggregates (RCA) as partial and full replacements for Natural Coarse Aggregates (NCA) in the production of green concrete. Five concrete mixes were designed with varying RCA replacement levels (0%, 25%, 50%, 75%, and 100%) while maintaining a constant binder content comprising cement, fly ash, and ground granulated blast furnace slag (GGBFS). The performance of these mixes was evaluated through tests for initial and final setting time, workability (slump), compressive strength, splitting tensile strength, flexural strength, water absorption, and Rapid Chloride Penetration Test (RCPT). The results indicated that while the incorporation of RCA led to a slight reduction in workability and mechanical strengths, mixes with up to 50% RCA replacement retained satisfactory performance in both strength and durability parameters. The increased water absorption and chloride permeability at higher RCA contents were attributed to the porous nature and adhered mortar on the RCA surface. However, the setting times remained within acceptable limits across all mixes. The study demonstrates that RCA can effectively replace NCA in structural-grade concrete up to 50% without significant loss in performance, promoting environmental sustainability through resource conservation and waste utilization. The findings encourage further development of green concrete technologies using recycled materials to support a circular economy in the construction sector.},
        keywords = {Green concrete; Fly ash; GGBFS; Recycled aggregates; Mechanical properties; Durability.},
        month = {June},
        }