Effect of using Waste Rubber as Partial Replacement of Coarse Aggregate on Torsional Strength of Square Reinforced Concrete Beam

Document Type : Original Article


Civil Engineering Department, College of Engineering, Babylon University, Iraq


The aim of this study is to test the rubberized concrete beams subjected to pure torsional moments. The study focused on the effect of the partial replacement of coarse aggregates with waste rubber chips of different proportions 10%, 20%, and 30% in volume on the beams ultimate torque, and rotation, as well as the ductility index, stiffness, cracking torque, and failure modes. Six specimens of concrete beams as the same size (225×225mm) have been tested. The same steel reinforcement has been applied to four specimens and two without reinforcement. According to experimental findings for reinforced specimens, the ultimate torque for the control beam (without replacement) is higher than beams with replacement rubber but the angle of twist of beams with replacement rubber rose more than the control beam. the ultimate torque decreases compared with the control beam by 4.49%, 10.08%, 13.98%, while the twist angle increases at ultimate torque by 11.16%, 26.79%, 39.69% when the percentage replacement of rubber is 10%, 20%, 30% respectively. When coarse aggregate was replaced with 30% rubber, the ductility index of specimens increased by 39.83%, and ultimate cracking stiffness was lowered by 38.42% as compared with the control beam.


Main Subjects

  1. A. Darshan, U. G. Puru V, U. G. Manjunatha R, U. G. Naveen Kumar N V, and U. G. Naveen B M, “An Experimental Study on Rubberized Concrete,” International Journal of Innovative Research in Science, Engineering and Technology, Vol. 6, No. 7, (2017), 12543-12550, doi: 10.15680/IJIRSET.2017.0607012.
  2. M. DUMNE, “An Experimental Study on Performance of Recycled Tyre Rubber-Filled Concrete,” International Journal of Engineering Research & Technology, Vol. 2, No. 12, (2013), 766-772, doi: IJERTV2IS120377.
  3. James K. White and J. G. Macgregor, REINFORCED CONCRETE Mechanics and Design, 6th Editio .(2012).
  4. A. Alfayez, A. R. Suleiman, and M. L. Nehdi, “Recycling tire rubber in asphalt pavements: State of the art,” Sustainability (Switzerland), Vol. 12, No. 21, (2020), 1-15, doi: 10.3390/su12219076.
  5. A. Aiello and F. Leuzzi, “Waste tyre rubberized concrete: Properties at fresh and hardened state,” Waste Management, Vol. 30, No. 8-9, (2010), 1696-1704, doi: 10.1016/j.wasman.2010.02.005.
  6. Gunasekaran, R. Ramasubramani, R. Annadurai, and S. Prakash Chandar, “Study on reinforced lightweight coconut shell concrete beam behavior under torsion,” Materials and Design, Vol. 57, (2014), 374-382, doi: 10.1016/j.matdes.2013.12.058.
  7. K. Mohaisen, A. A. Abdulhameed, and M. M. Kharnoob, “Behavior of Reinforced Concrete Continuous Beams under Pure Torsion,” Journal of Engineering, Vol. 22, No. 12, (2016), 1-15,
  8. M. A. Siddiqui, “Study of Rubber Aggregates in Concrete an Experimental Investigation,” International Journal of Latest Research in Engineering and Technology, Vol. 02, No. 12, (2016), 36-57, [Online]. Available: http://www.iaeme.com/MasterAdmin/UploadFolder/STUDY OF RUBBER AGGREGATES.pdf.
  9. Abdulameer and H. M. K. Al-mutairee, “An Experimental Study on Behavior of Sustainable Rubberized Concrete Mixes,” Civil Engineering Journal, Vol. 6, No. 7, (2020), 1273-1285, doi: http://dx.doi.org/10.28991/cej-2020-03091547.
  10. N. Sahib and H. M. K. Al-mutairee, “Punching strength behavior of reinforced concrete slabs with chips waste tire rubber,” Periodicals of Engineering and Natural Sciences, Vol. 8, No. 4, (2020), 2389-2404, doi: DOI: http://dx.doi.org/10.21533/pen.v8i4.1735.
  11. Abdulameer Kadhim and H. Mohammed Kadhim, “Experimental Investigation of Rubberized Reinforced Concrete Continuous Deep Beams,” Journal of King Saud University - Engineering Sciences, Vol. 33, No. 4, (2021), 1-11, doi: 10.1016/j.jksues.2021.03.001.
  12. A. Kadhim and H. M. Kadhim, “Loading Capacity Prediction of Rubberized Reinforced Concrete Continuous Deep Beams,” IOP Conference Series: Materials Science and Engineering, Vol. 1090, No. 1, (2021), 012031, doi: 10.1088/1757-899x/1090/1/012031.
  13. M. K. Al-Mutairee and O. M. Makki, “Rubberized concrete mix - discussions for literature review,” Journal of Physics: Conference Series, Vol. 1895, No. 1, (2021), 012011, doi: 10.1088/1742-6596/1895/1/012011.
  14. Gunasekaran and S. Choudhury, “Experimental Study on Single Bay Reinforced Coconut Shell Concrete Portal Frame under Lateral and Cyclic Load,” International Journal of Engineering, Transactions B: Applications, Vol. 34, No. 08, (2021), 1905-1912, doi: 10.5829/ije.2021.34.08b.12.
  15. ACI 318-19, “Building Code Requirements for Structural Concrete and Commentary,” American Concrete Institute. p. 628, (2019), doi: 10.14359/51716937.
  16. The second modify, Iraqi Specification No.5 -1984, “Portland cement.” (2010).
  17. Second modify, Iraq Specification No.45/1984, “Natural Sources for Gravel that is used in concrete and construction.” Baghdad, (2010).
  18. ASTM C494/C494M, “Standard Specification for Chemical Admixtures for Concrete,” (2017), doi: 10.1520/C0494_C0494M-17.
  19. ASTM A615 / A615M-16, “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.” ASTM International, West Conshohocken, PA, (2016), doi: 10.1520/A0615_A0615M-16.
  20. C78/C78M-18, “Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading) 1,” ASTM International, Vol. C78-18, No. C, (2018), 1-4, doi: DOI: 10.1520/C0078_C0078M-18. 2.
  21. ASTM C496/Ca96M-11, “Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens,” ASTM International, (2011), 1-5, doi: 10.1520/C0496_C0496M-11.
  22. ASTM C469/469M-14, “Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete,” ASTM International, 2-6, (2014), doi: 10.1520/C0469-C0469M-14.
  23. Park, “Structural Assemblages from Laboratory Testing,” Bulletin of the New Zealand National Society for Earthquake Engineering, vol. 22, No. 3, (1989), 155-166.
  24. S. Mohsin, N. A. Alwash, and M. M. Kadhum, “Comparative Study on Structural Behavior of Reinforced Concrete Straight Beam and Beams with out Plane Parts,” International Journal Engineering, Transactions A: Basics, Vol. 34, No. 10, (2021), 2280-2293, doi: 10.5829/ije.2021.34.10a.09.