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Post-fire flexural behavior of functionally graded fiber-reinforced concrete containing rubber

  • Nematzadeh, Mahdi (Department of Civil Engineering, University of Mazandaran) ;
  • Mousavi, Reza (Department of Civil Engineering, University of Mazandaran)
  • Received : 2020.10.24
  • Accepted : 2021.03.31
  • Published : 2021.05.25

Abstract

The optimal distribution of steel fibers over different layers of concrete can be considered as an appropriate method in improving the structural performance and reducing the cost of fiber-reinforced concrete members. In addition, the use of waste tire rubber in concrete mixes, as one of the practical ways to address environmental problems, is highly significant. Thus, this study aimed to evaluate the flexural behavior of functionally graded steel fiber-reinforced concrete containing recycled tire crumb rubber, as a volume replacement of sand, after exposure to elevated temperatures. Little information is available in the literature regarding this subject. To achieve this goal, a set of 54 one-, two-, and three-layer concrete beam specimens with different fiber volume fractions (0, 0.25, 0.5, 1, and 1.25%), but the same overall fiber content, and different volume percentages of the waste tire rubber (0, 5, and 10%) were exposed to different temperatures (23, 300, and 600℃). Afterward, the parameters affecting the post-heating flexural performance of concrete, including flexural strength and stiffness, toughness, fracture energy, and load-deflection diagrams, along with the compressive strength and weight loss of concrete specimens, were evaluated. The results indicated that the flexural strength and stiffness of the three-layer concrete beams respectively increased by 10 and 7%, compared to the one-layer beam specimens with the same fiber content. However, the flexural performance of the two-layer beams was reduced relative to those with one layer and equal fiber content. Besides, the flexural strength, toughness, fracture energy, and stiffness were reduced by approximately 10% when a 10% of natural sand was replaced with tire rubber in the three-layer specimens compared to the corresponding beams without crumb rubber. Although the flexural properties of concrete specimens increased with increasing the temperature up to 300℃, these properties degraded significantly with elevating the temperature up to 600℃, leading to a sharp increase in the deflection at peak load.

Keywords

References

  1. Abbas, A., Cotsovos, D.M. and Behinaein, P. (2018), "Behaviour of steel-fibre-reinforced concrete beams under high-rate loading", Comput. Concrete, 22(3), 337-353. https://doi.org/10.12989/cac.2018.22.3.337.
  2. AbdelAleem, B.H., Ismail, M.K. and Hassan, A.A. (2018), "The combined effect of crumb rubber and synthetic fibers on impact resistance of self-consolidating concrete", Constr. Build. Mater., 162, 816-829. https://doi.org/10.1016/j.conbuildmat.2017.12.077.
  3. ACI 211.1-91 (2000), Standard Practice for Selecting Proportions for Normal, Heavyweight and Mass Concrete, ACI Manual of Concrete Practice, Part1, American Concrete Institute, MI, USA.
  4. Al-Azzawi, A.A., Saad, N. and Shakir, D. (2019), "Behavior of hybrid concrete beams with waste rubber", Comput. Concrete, 23(4), 245-253. https://doi.org/10.12989/cac.2019.23.4.245.
  5. Altun, F., Haktanir, T. and Ari, K. (2007), "Effects of steel fiber addition on mechanical properties of concrete and RC beams", Constr. Build. Mater., 21(3), 654-661. https://doi.org/10.1016/j.conbuildmat.2005.12.006.
  6. Amin, A. and Foster, S.J. (2016), "Predicting the flexural response of steel fibre reinforced concrete prisms using a sectional model", Cement Concrete Compos., 67, 1-11. https://doi.org/10.1016/j.cemconcomp.2015.12.007.
  7. Amin, A., Foster, S.J. and Kaufmann, W. (2017), "Instantaneous deflection calculation for steel fibre reinforced concrete one way members", Eng. Struct., 131, 438-445. https://doi.org/10.1016/j.engstruct.2016.10.041.
  8. Arioz, O. (2007), "Effects of elevated temperatures on properties of concrete", Fire Saf. J., 42(8), 516-522. https://doi.org/10.1016/j.firesaf.2007.01.003.
  9. Aslani, F., Nejadi, S. and Samali, B. (2014), "Long-term flexural cracking control of reinforced self-compacting concrete one way slabs with and without fibres", Comput. Concrete, 14(4), 419-443. http://dx.doi.org/10.12989/cac.2014.14.4.419.
  10. ASTM C128 (2015), Standard Test Method for Relative Density (Specific Gravity) and Absorption of Fine Aggregate, ASTM International, West Conshohocken.
  11. ASTM C143/C143M (2012), Standard Test Method for Slump of Hydraulic Cement Concrete, ASTM International, Philadelphia.
  12. ASTM C1609/C1609M (2012), Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (using Beam with Third-Point Loading), ASTM International, United States.
  13. ASTM C39/C39M (2014), Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, ASTM International, Philadelphia.
  14. Chalioris, C.E. and Panagiotopoulos, T.A. (2018), "Flexural analysis of steel fibre-reinforced concrete members", Comput. Concrete, 22(1), 11-25. https://doi.org/10.12989/cac.2018.22.1.011.
  15. Chan, R., Liu, X. and Galobardes, I. (2020), "Parametric study of functionally graded concretes incorporating steel fibres and recycled aggregates", Constr. Build. Mater., 242, 118186. https://doi.org/10.1016/j.conbuildmat.2020.118186.
  16. Choudhary, S., Chaudhary, S., Jain, A. and Gupta, R. (2020), "Valorization of waste rubber tyre fiber in functionally graded concrete", Mater. Today Pr., 32, 645-650. https://doi.org/10.1016/j.matpr.2020.03.122.
  17. Colombo, M., Di Prisco, M. and Felicetti, R. (2010), "Mechanical properties of steel fibre reinforced concrete exposed at high temperatures", Mater. Struct., 43(4), 475-491. https://doi.org/10.1617/s11527-009-9504-0.
  18. Dashti, J. and Nematzadeh, M. (2020), "Flexural behavior of GFRP bar-reinforced calcium aluminate cement concrete beams containing forta-ferro fibers in acidic environment", Constr. Build. Mater., 265, 120602. https://doi.org/10.1016/j.conbuildmat.2020.120602.
  19. Dzolev, I., Cvetkovska, M., Ladinovic, D. and Radonjanin, V. (2018), "Numerical analysis on the behaviour of reinforced concrete frame structures in fire", Comput. Concrete, 21(6), 637-647. https://doi.org/10.12989/cac.2018.21.6.637.
  20. Eisa, A.S., Elshazli, M.T. and Nawar, M.T. (2020), "Experimental investigation on the effect of using crumb rubber and steel fibers on the structural behavior of reinforced concrete beams", Constr. Build. Mater., 252, 119078. https://doi.org/10.1016/j.conbuildmat.2020.119078.
  21. Fakoor, M. and Nematzadeh, M. (2021), "A new post-peak behavior assessment approach for effect of steel fibers on bond stress-slip relationship of concrete and steel bar after exposure to high temperatures", Constr. Build. Mater., 278, 122340. https://doi.org/10.1016/j.conbuildmat.2021.122340.
  22. Fallah-Valukolaee, S. and Nematzadeh, M. (2020), "Experimental study for determining applicable models of compressive stress-strain behavior of hybrid synthetic fiber-reinforced high-strength concrete", Eur. J. Environ. Civil Eng., 24(1), 34-59. https://doi.org/10.1080/19648189.2017.1364297.
  23. Gesoglu, M., Guneyisi, E., Hansu, O., Ipek, S. and Asaad, D.S. (2015), "Influence of waste rubber utilization on the fracture and steel-concrete bond strength properties of concrete", Constr. Build. Mater., 101, 1113-1121. https://doi.org/10.1016/j.conbuildmat.2015.10.030.
  24. Ghalehnovi, M., Karimipour, A. and de Brito, J. (2019), "Influence of steel fibres on the flexural performance of reinforced concrete beams with lap-spliced bars", Constr. Build. Mater., 229, 116853. https://doi.org/10.1016/j.conbuildmat.2019.116853.
  25. Ghasemi Naghibdehi, M., Naghipour, M. and Rabiee, M. (2015), "Behaviour of functionally graded reinforced-concrete beams under cyclic loading", Gradevinar, 67(05), 427-439. https://doi.org/10.14256/JCE.1124.2014.
  26. Han, J., Zhao, M., Chen, J. and Lan, X. (2019), "Effects of steel fiber length and coarse aggregate maximum size on mechanical properties of steel fiber reinforced concrete", Constr. Build. Mater., 209, 577-591. https://doi.org/10.1016/j.conbuildmat.2019.03.086.
  27. Hasan-Ghasemi, A. and Nematzadeh, M. (2021), "Tensile and compressive behavior of self-compacting concrete incorporating PET as fine aggregate substitution after thermal exposure: Experiments and modeling", Constr. Build. Mater., 289, 123067. https://doi.org/10.1016/j.conbuildmat.2021.123067.
  28. Hertz, K.D. (2005), "Concrete strength for fire safety design", Mag. Concrete Res., 57(8), 445-453. https://doi.org/10.1680/macr.2005.57.8.445.
  29. Hosseini, S.A., Nematzadeh, M. and Chastre, C. (2021), "Prediction of shear behavior of steel fiber-reinforced rubberized concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars", Compos. Struct., 256, 113010. https://doi.org/10.1016/j.compstruct.2020.113010.
  30. International Organization for Standardization. (2012), Fire-Resistance Tests: Elements of Building Construction, Commentary on Test Method and Guide to the Application of the Outputs from the Fire-resistance Test, ISO834.
  31. Iskhakov, I. and Ribakov, Y. (2007), "A design method for two-layer beams consisting of normal and fibered high strength concrete", Mater. Des., 28(5), 1672-1677. https://doi.org/10.1016/j.matdes.2006.03.017.
  32. Ismail, M.K. and Hassan, A.A. (2017), "An experimental study on flexural behaviour of large-scale concrete beams incorporating crumb rubber and steel fibres", Eng. Struct., 145, 97-108. https://doi.org/10.1016/j.engstruct.2017.05.018.
  33. Jafarzadeh, H. and Nematzadeh, M. (2020), "Evaluation of post-heating flexural behavior of steel fiber-reinforced high-strength concrete beams reinforced with FRP bars: Experimental and analytical results", Eng. Struct., 225, 111292. https://doi.org/10.1016/j.engstruct.2020.111292.
  34. Karimi, A. and Nematzadeh, M. (2020), "Axial compressive performance of steel tube columns filled with steel fiber-reinforced high strength concrete containing tire aggregate after exposure to high temperatures", Eng. Struct., 219, 110608. https://doi.org/10.1016/j.engstruct.2020.110608.
  35. Karimi, A., Nematzadeh, M. and Mohammad-Ebrahimzadeh-Sepasgozar, S. (2020), "Analytical post-heating behavior of concrete-filled steel tubular columns containing tire rubber", Comput. Concrete, 26(6), 467. https://doi.org/10.12989/cac.2020.26.6.467.
  36. Khalaf, J. and Huang, Z. (2019), "The bond behaviour of reinforced concrete members at elevated temperatures", Fire Saf. J., 103, 19-33. https://doi.org/10.1016/j.firesaf.2018.12.002.
  37. Khaloo, A.R., Dehestani, M. and Rahmatabadi, P. (2008), "Mechanical properties of concrete containing a high volume of tire-rubber particles", Waste Manage., 28(12), 2472-2482. https://doi.org/10.1016/j.wasman.2008.01.015.
  38. Kim, G.J. and Kwak, H.G. (2017), "Depth-dependent evaluation of residual material properties of fire-damaged concrete", Comput. Concrete, 20(4), 503-509. http://doi.org/10.12989/cac.2017.20.4.503.
  39. Koksal, F., Sahin, Y., Gencel, O. and Yigit, I. (2013), "Fracture energy-based optimisation of steel fibre reinforced concretes", Eng. Fract. Mech., 107, 29-37. https://doi.org/10.1016/j.engfracmech.2013.04.018.
  40. Lee, J.Y., Shin, H.O., Yoo, D.Y. and Yoon, Y.S. (2018), "Structural response of steel-fiber-reinforced concrete beams under various loading rates", Eng. Struct., 156, 271-283. https://doi.org/10.1016/j.engstruct.2017.11.052.
  41. Liu, X., Yan, M., Galobardes, I. and Sikora, K. (2018), "Assessing the potential of functionally graded concrete using fibre reinforced and recycled aggregate concrete", Constr. Build. Mater., 171, 793-801. https://doi.org/10.1016/j.conbuildmat.2018.03.202.
  42. Mertol, H.C., Baran, E. and Bello, H.J. (2015), "Flexural behavior of lightly and heavily reinforced steel fiber concrete beams", Constr. Build. Mater., 98, 185-193. https://doi.org/10.1016/j.conbuildmat.2015.08.032.
  43. Miyamoto, Y., Kaysser, W.A., Rabin, B.H., Kawasaki, A. and Ford, R.G. (Eds.). (1999), Functionally Graded Materials: Design, Processing and Applications, Springer Science and Business Media.
  44. Mohammadi, Y., Singh, S.P. and Kaushik, S.K. (2008), "Properties of steel fibrous concrete containing mixed fibres in fresh and hardened state", Constr. Build. Mater., 22(5), 956-965. https://doi.org/10.1016/j.conbuildmat.2006.12.004.
  45. Mousavimehr, M. and Nematzadeh, M. (2019), "Predicting post-fire behavior of crumb rubber aggregate concrete", Constr. Build. Mater., 229, 116834. https://doi.org/10.1016/j.conbuildmat.2019.116834.
  46. Mousavimehr, M. and Nematzadeh, M. (2020). "Post-heating flexural behavior and durability of hybrid PET-Rubber aggregate concrete", Constr. Build. Mater., 265, 120359. https://doi.org/10.1016/j.conbuildmat.2020.120359.
  47. Murugan, R.B. and Chidambarathanu, N. (2017), "Investigation on the use of waste tyre crumb rubber in concrete paving blocks", Comput. Concrete, 20(3), 311. https://doi.org/10.12989/cac.2017.20.3.311.
  48. Naghibdehi, M.G., Sharbatdar, M.K. and Mastali, M. (2014), "Repairing reinforced concrete slabs using composite layers", Mater. Des., 58, 136-144. https://doi.org/10.1016/j.matdes.2014.02.015.
  49. Nataraja, M.C., Dhang, N. and Gupta, A.P. (1999), "Stress-strain curves for steel-fiber reinforced concrete under compression", Cement Concrete Compos., 21(5), 383-390. https://doi.org/10.1016/S0958-9465(99)00021-9.
  50. Nematzadeh, M. and Fallah-Valukolaee, S. (2017), "Effectiveness of fibers and binders in high-strength concrete under chemical corrosion", Struct. Eng. Mech., 64(2), 243-257. http://doi.org/10.12989/sem.2017.64.2.243.
  51. Nematzadeh, M. and Fallah-Valukolaee, S. (2021), "Experimental and analytical investigation on structural behavior of two-layer fiber-reinforced concrete beams reinforced with steel and GFRP rebars", Constr. Build. Mater., 273, 121933. https://doi.org/10.1016/j.conbuildmat.2020.121933.
  52. Nematzadeh, M. and Mousavimehr, M. (2019), "Residual compressive stress-strain relationship for hybrid recycled PET-crumb rubber aggregate concrete after exposure to elevated temperatures", J. Mater. Civil Eng., 31(8), 04019136. https://doi.org/10.1061/(asce)mt.1943-5533.0002749
  53. Nematzadeh, M., Hasan-Nattaj, F., Gholampour, A., Sabetifar, H. and Ngo, TD. (2021a), "Strengthening of heat-damaged steel fber-reinforced concrete using CFRP composites: Experimental study and analytical modeling", Struct., 32, 1856-1870. https://doi.org/10.1016/j.istruc.2021.03.084.
  54. Nematzadeh, M., Karimi, A. and Fallah-Valukolaee, S. (2020), "Compressive performance of steel fiber-reinforced rubberized concrete core detached from heated CFST", Constr. Build. Mater., 239, 117832. https://doi.org/10.1016/j.conbuildmat.2019.117832.
  55. Nematzadeh, M., Mousavimehr, M., Shayanfar, J. and Omidalizadeh, M. (2021b), "Eccentric compressive behavior of steel fiber-reinforced RC columns strengthened with CFRP wraps: Experimental investigation and analytical modeling", Eng. Struct., 226, 111389. https://doi.org/10.1016/j.engstruct.2020.111389.
  56. Nematzadeh, M., Salari, A., Ghadami, J. and Naghipour, M. (2016), "Stress-strain behavior of freshly compressed concrete under axial compression with a practical equation", Constr. Build. Mater., 115, 402-423. https://doi.org/10.1016/j.conbuildmat.2016.04.045.
  57. Nes, L.G. and Overli, J.A. (2016), "Structural behaviour of layered beams with fibre-reinforced LWAC and normal density concrete", Mater. Struct., 49(1-2), 689-703. https://doi.org/10.1617/s11527-015-0530-9.
  58. Poon, C.S., Shui, Z.H. and Lam, L. (2004), "Compressive behavior of fiber reinforced high-performance concrete subjected to elevated temperatures", Cement Concrete Res., 34(12), 2215-2222. https://doi.org/10.1016/j.cemconres.2004.02.011.
  59. RILEM D.R. (1985), "50-FMC committee fracture mechanics of concrete", Mater. Struct., 18(106), 285-290. https://doi.org/10.1007/BF02472917
  60. Roesler, J., Paulino, G., Gaedicke, C., Bordelon, A. and Park, K. (2007), "Fracture behavior of functionally graded concrete materials for rigid pavements", Tran. Res. Record, 2037(1), 40-49. https://doi.org/10.3141/2037-04.
  61. Samarakoon, S.S.M., Ruben, P., Pedersen, J.W. and Evangelista, L. (2019), "Mechanical performance of concrete made of steel fibers from tire waste", Case Stud. Constr. Mater., e00259. https://doi.org/10.1016/j.cscm.2019.e00259.
  62. Schnabl, S., Saje, M., Turk, G., and Planinc, I. (2007), "Analytical solution of two-layer beam taking into account interlayer slip and shear deformation", J. Struct. Eng., 133(6), 886-894. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:6(886).
  63. Shen, B., Hubler, M., Paulino, G.H. and Struble, L.J. (2008), "Functionally-graded fiber-reinforced cement composite: Processing, microstructure, and properties", Cement Concrete Compos., 30(8), 663-673. https://doi.org/10.1016/j.cemconcomp.2008.02.002.
  64. Sukontasukkul, P., Pomchiengpin, W. and Songpiriyakij, S. (2010), "Post-crack (or post-peak) flexural response and toughness of fiber reinforced concrete after exposure to high temperature", Constr. Build. Mater., 24(10), 1967-1974. https://doi.org/10.1016/j.conbuildmat.2010.04.003.
  65. Tayebi, M. and Nematzadeh, M. (2021), "Effect of Hot-Compacted waste nylon fine aggregate on compressive Stress-Strain behavior of steel Fiber-Reinforced concrete after exposure to fire: Experiments and optimization", Constr. Build. Mater., 284, 122742. https://doi.org/10.1016/j.conbuildmat.2021.122742.
  66. Torelli, G., Fernandez, M.G. and Lees, J.M. (2020), "Functionally graded concrete: Design objectives, production techniques and analysis methods for layered and continuously graded elements", Constr. Build. Mater., 242, 118040. https://doi.org/10.1016/j.conbuildmat.2020.118040.
  67. Toutanji, H.A. (1996), "The use of rubber tire particles in concrete to replace mineral aggregates", Cement Concrete Compos., 18(2), 135-139. https://doi.org/10.1016/0958-9465(95)00010-0.
  68. Wang, J., Chen, X., Bu, J. and Guo, S. (2019), "Experimental and numerical simulation study on fracture properties of self-compacting rubberized concrete slabs", Comput. Concrete, 24(4), 283-293. https://doi.org/10.12989/cac.2019.24.4.283.
  69. Wang, J., Guo, Z., Yuan, Q., Zhang, P. and Fang, H. (2020), "Effects of ages on the ITZ microstructure of crumb rubber concrete", Constr. Build. Mater., 254, 119329. https://doi.org/10.1016/j.conbuildmat.2020.119329.
  70. Wu, Z., Shi, C., He, W. and Wu, L. (2016), "Effects of steel fiber content and shape on mechanical properties of ultra high performance concrete", Constr. Build. Mater., 103, 8-14. https://doi.org/10.1016/j.conbuildmat.2015.11.028.
  71. Xie, J., Li, J., Lu, Z., Li, Z., Fang, C., Huang, L. and Li, L. (2019), "Combination effects of rubber and silica fume on the fracture behaviour of steel-fibre recycled aggregate concrete", Constr. Build. Mater., 203, 164-173. https://doi.org/10.1016/j.conbuildmat.2019.01.094.
  72. Yan, H., Sun, W. and Chen, H. (1999), "The effect of silica fume and steel fiber on the dynamic mechanical performance of high-strength concrete", Cement Concrete Res., 29(3), 423-426. https://doi.org/10.1016/S0008-8846(98)00235-X.
  73. Yu, K. and Lu, Z. (2015), "Influence of softening curves on the residual fracture toughness of post-fire normal-strength concrete", Comput. Concrete, 15(2), 199-213. https://doi.org/10.12989/cac.2015.15.2.199.
  74. Zhang, Q. and Ye, G. (2019), "Modelling microstructural changes of ordinary Portland cement paste at elevated temperature", Adv. Cement Res., 31(1), 26-42. https://doi.org/10.1680/jadcr.16.00145.