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Use of Waste Tires as Transverse Reinforcement and External Confinement in Concrete Columns Subjected to Axial Loads

Author

Listed:
  • Mahesh Mahat

    (Blue Planet Systems, Los Gatos, CA 95032, USA)

  • Mahesh Acharya

    (Department of Civil & Environmental Engineering, Idaho State University, Pocatello, ID 83209, USA)

  • Manish Acharya

    (Department of Civil & Environmental Engineering, Idaho State University, Pocatello, ID 83209, USA)

  • Mustafa Mashal

    (Department of Civil & Environmental Engineering, Idaho State University, Pocatello, ID 83209, USA)

Abstract

Approximately 246 million waste tires are generated annually in the United States. That is roughly three tires per four individuals in the country. Most tires end up in landfills, adversely affecting the environment. In the last two decades, researchers have explored using tire chips in concrete to replace a portion of coarse aggregates. Past studies have indicated that up to 50% of coarse aggregates in concrete can be replaced with tire chips. This research proposes using recycled rubber tires and rubber chips in concrete columns. The tires are used as external transverse reinforcement in plain concrete columns. The tires function as formwork during the pour while providing confinement after curing. The concepts in this research can be used for retrofitting structures with inadequate foundations and constructing new structures. After analyzing the data from this research, the axial compressive test of confined columns was 50% greater on average than unconfined columns. The confinement effectiveness ratio for all confined specimens was greater than one.

Suggested Citation

  • Mahesh Mahat & Mahesh Acharya & Manish Acharya & Mustafa Mashal, 2023. "Use of Waste Tires as Transverse Reinforcement and External Confinement in Concrete Columns Subjected to Axial Loads," Sustainability, MDPI, vol. 15(15), pages 1-21, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:15:p:11620-:d:1204136
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