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Mechanical properties of concrete containing a high volume of tire-rubber particles

Khaloo, A. R ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.wasman.2008.01.015
  3. Publisher: 2008
  4. Abstract:
  5. Due to the increasingly serious environmental problems presented by waste tires, the feasibility of using elastic and flexible tire-rubber particles as aggregate in concrete is investigated in this study. Tire-rubber particles composed of tire chips, crumb rubber, and a combination of tire chips and crumb rubber, were used to replace mineral aggregates in concrete. These particles were used to replace 12.5%, 25%, 37.5%, and 50% of the total mineral aggregate's volume in concrete. Cylindrical shape concrete specimens 15 cm in diameter and 30 cm in height were fabricated and cured. The fresh rubberized concrete exhibited lower unit weight and acceptable workability compared to plain concrete. The results of a uniaxial compressive strain control test conducted on hardened concrete specimens indicate large reductions in the strength and tangential modulus of elasticity. A significant decrease in the brittle behavior of concrete with increasing rubber content is also demonstrated using nonlinearity indices. The maximum toughness index, indicating the post failure strength of concrete, occurs in concretes with 25% rubber content. Unlike plain concrete, the failure state in rubberized concrete occurs gently and uniformly, and does not cause any separation in the specimen. Crack width and its propagation velocity in rubberized concrete are lower than those of plain concrete. Ultrasonic analysis reveals large reductions in the ultrasonic modulus and high sound absorption for tire-rubber concrete. © 2008 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Absorption ; Agglomeration ; Aggregates ; Concrete aggregates ; Concrete beams and girders ; Concrete construction ; Ice ; Mechanical properties ; Mineralogy ; Minerals ; Mining ; Rubber ; Separation ; Silica ; Silicate minerals ; Tires ; Ultrasonics ; Brittle behaviors ; Compressive strains ; Concrete specimens ; Control tests ; Crack widths ; Crumb rubbers ; Cylindrical shapes ; Environmental problems ; Failure strengths ; Flexible tires ; Hardened concretes ; Mineral aggregates ; Modulus of elasticities ; Nonlinearity indices ; Plain concretes ; Propagation velocities ; Rubber contents ; Rubber particles ; Sound absorptions ; Tire chips ; Toughness indices ; Ultrasonic analyses ; Ultrasonic modulus ; Unit weights ; Waste tires ; Concretes ; Cement ; Concrete ; Feasibility study ; Mechanical property ; Tire ; Content analysis ; Motor vehicle tire ; Particle size ; Priority journal ; Recycling ; Conservation of natural resources ; Construction materials ; Mechanics ; Motor vehicles ; Waste management
  8. Source: Waste Management ; Volume 28, Issue 12 , 2008 , Pages 2472-2482 ; 0956053X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0956053X08000366