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Performance of Reinforced Concrete Beams Made with Tire-Rubber

Taherkhani, Shayan | 2025

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 58123 (09)
  4. University: Sharif University of Technology
  5. Department: Management and Economics
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. In this study, the effects of adding rubber particles to reinforced concrete beams were investigated. In recent years, the use of recycled materials in concrete production has emerged as a method to reduce environmental impacts and costs in the construction industry. In this context, the use of waste rubber particles from worn tires as a partial replacement for fine aggregates in concrete production can contribute to improving the technical properties of concrete. This research examines the simultaneous effects of rubber particles, concrete compressive strength, and the tensile steel reinforcement ratio on the flexural strength of reinforced concrete beams under four-point loading. Sixteen reinforced concrete beams with dimensions of 150 mm in height, 150 mm in width, and 1500 mm in length were designed and tested. The variables in this experiment include four replacement levels of rubber particles with fine aggregates, two reinforcement ratios, and two compressive strength levels of concrete. In addition to the four-point loading test, compressive strength and slump tests were conducted on the concrete mix. The results showed that in specimens with lower reinforcement ratios and lower base strengths, no sudden load drops were observed. Increasing the rubber particle content reduced the beam capacity; however, the loads remained within acceptable limits, making them a viable option for use. Beams with up to 10% rubber particle content, lower reinforcement ratios, and reduced strength were found to provide the most optimal configuration for using rubber particles in reinforced concrete beams. Moreover, the flexural performance of rubber-containing beams was superior to conventional beams in both cracking and ultimate moments. This indicates that while adding rubber particles reduces the flexural strength of the beam, it performs better compared to conventional concrete of the same strength grade
  9. Keywords:
  10. Reinforced Concrete ; Mechanical Properties ; Shredded Tire ; Rubber-Containing Reinforced Concrete Beam ; Rubber Waste ; Reinforcement Concrete Beam ; Concrete Compressive Strenght

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