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Mechanical Performance of 100% Recycled Aggregate Based Geopolymer Concrete at Various Concentrations of NaOH

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Smart & Sustainable Infrastructure: Building a Greener Tomorrow (ISSSI 2023)

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Abstract

India is among the developing countries grappling with environmental pollution. To address the environmental pollution that results from the production of OPC and the increasing waste material, there are various methods available, including geopolymer concrete (GPC) that incorporates recycled concrete aggregate (RCA). To maintain consistency, a constant alkali activator content (AAC) to binder ratio is employed. The compressive strength (CS) and indirect tensile strength (ST) of the GPC with recycled aggregate are evaluated at 3, 7, 14, 28, and 56 days. The findings indicate that the CS and ST of the GPC with recycled aggregate are lower than those of natural aggregate-based GPC. Nonetheless, there is a positive correlation between CS and ST in GPC containing recycled aggregate. Furthermore, the mechanical performance of the recycled aggregate based GPC increases up to 16M NaOH concentration and decreases beyond that.

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Acknowledgments

The authors appreciate the support provided by Ramky Enviro Engineers Limited, Hyderabad, India, for providing treated RAs for smooth completion of the research project.

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Authors and Affiliations

  1. School of Infrastructure, Indian Institute of Technology Bhubaneswar, Jatni, Khurda Road, Bhubaneswar, 752050, Odisha, India

    Banoth Gopalakrishna & Pasla Dinakar

Authors
  1. Banoth Gopalakrishna
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  2. Pasla Dinakar
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Correspondence to Pasla Dinakar .

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Editors and Affiliations

  1. Department of Civil Engineering, University of British Columbia, Vancouver, BC, Canada

    Nemkumar Banthia

  2. Department of Civil Engineering, University of British Columbia, Vancouver, BC, Canada

    Salman Soleimani-Dashtaki

  3. Department of Civil Engineering, University of British Columbia, Vancouver, BC, Canada

    Sidney Mindess

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Gopalakrishna, B., Dinakar, P. (2024). Mechanical Performance of 100% Recycled Aggregate Based Geopolymer Concrete at Various Concentrations of NaOH. In: Banthia, N., Soleimani-Dashtaki, S., Mindess, S. (eds) Smart & Sustainable Infrastructure: Building a Greener Tomorrow. ISSSI 2023. RILEM Bookseries, vol 48. Springer, Cham. https://doi.org/10.1007/978-3-031-53389-1_4

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  • DOI: https://doi.org/10.1007/978-3-031-53389-1_4

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-53388-4

  • Online ISBN: 978-3-031-53389-1

  • eBook Packages: EngineeringEngineering (R0)

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