International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Study of Steel Fiber Concrete Slabs Part I: Behavior under Uniformly Distributed Loads

  • Ellouze, Ali (Civil Engineering Laboratory, National Engineering School of Tunis) ;
  • Ouezdou, Mongi Ben (Civil Engineering Laboratory, National Engineering School of Tunis) ;
  • Karray, Mohammed Ali (Civil Engineering Laboratory, National Engineering School of Tunis)
  • Received : 2010.07.09
  • Accepted : 2010.10.19
  • Published : 2010.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

This article aims to study the effects of adding steel fibers to concrete on the mechanical behavior of steel fiber concrete (SFC) slabs. After formulating the SFC, an experimental work was, first, conducted on $160\;{\times}\;320$ mm cylindrical specimens and $70\;{\times}\;70\;{\times}\;280$ mm prisms. Then, this study was carried out on 20 rectangular $1,100\;{\times}\;1,100\;{\times}\;60$ mm small slabs submitted to a distributed load. Two types of fibers with hooked ends were used: long fibers (LF) of a length of 50 mm and short fibers (SF) of a length of 35 mm. The studied parameters are compressive and tensile strengths and Young's modulus. Plain concrete (PC) small slabs were also prepared to be compared to the SFC specimens. The results showed that the compressive strength of SFC increased up to 25% while the splitting tests showed an improvement of the SFC reaching 45%. Tests on SFC small slabs also showed that a smaller deflection is obtained with respect to PC, which indicates an improvement in strength (up to 100%), in ductility and in resistance to cracking. The LF gives a better improvement in strength than the SF for a 70% $kg/m^3$ of steel proportioning.

Keywords

References

  1. Vondran, L., “Applications of Steel Fiber Reinforced Concrete,” Concrete International, Vol. 13, No. 11, 1991, pp. 44-49.
  2. Bakht, B. and Mufti, A., “FRC Deck Slabs without Tensile Reinforcement,” Concrete International, Vol. 18, No. 2, 1996, pp. 50-55.
  3. Newhook, J. P. and Mufti, A. A., “A Reinforcing Steel-Free Concrete Deck Slab for the Salmon River Bridge,” Concrete International, Vol. 18, No. 6, 1996, pp. 30-34.
  4. Sargent, D. D., Ventura, C. E., Mufti, A. A., and Bakht, B., “Testing of Steel-free Bridge Decks,” Concrete International, Vol. 21, No. 8, 1999, pp. 55-61.
  5. Marti, P., Pfyl T., Sigrit, V., and Ulaga, T., “Harmonized Test Procedures for Steel Fiber-Reinforced Concrete,” ACI Materials Journal, Vol. 96, No. 6, 1999, pp. 676-686.
  6. Destree, X., “Steel Fibre Reinforcement for Suspended Slabs,” Concrete, Vol. 35, No. 8, 2001, pp. 58-59.
  7. Oslejs, J., “New Frontiers for Steel Fiber-Reinforced Concrete,” Concrete International, Vol. 30, No. 5, 2008, pp. 45-50.
  8. Falkner, H., Huang, Z., and Teutsch, M., “Comparative Study of Plain and Steel Fiber Reinforced Concrete Dground Slabs,” Concrete International, Vol. 17, No. 1, 1995, pp. 45-51.
  9. Barros, J. A. O. and Figueiras, J. A., “Flexural Behavior of SFRC: Testing and Modeling,” Journal of Material in Civil Engineering, ASCE, Vol. 11, No. 4, 1999, pp. 331-339. https://doi.org/10.1061/(ASCE)0899-1561(1999)11:4(331)
  10. Khaloo, A. R. and Afshari, M., “Flexural Behaviour of Small Steel fibre Reinforced Concrete Slabs,” Cement and Concrete Composites, Vol. 27, No. 1, 2005, pp. 141-149. https://doi.org/10.1016/j.cemconcomp.2004.03.004
  11. Sorelli, G., Meda, A., and Plizzarri, G. A., “Steel Fiber Concrete Slabs on Ground: A Structural Matter,” ACI Structural Journal, Vol. 103, No. 4, 2006, pp. 551-558.
  12. Rossi, P., Harrouche, N., and Belloc, A., “Methode de Composition des Betons de Fibres Metalliques,” Annales de l’ITBTP, No. 475, 1989, pp. 38-43 (In French).
  13. Rossi, P., Harrouche, N., and F. De Larrard, “Method for Optimizing the Composition of Metal-Fiber-Reinforced Concretes,” Fiber Reinforced Cements and Concretes - Recent Developments, Swamy, R. N., and Barr, B., eds., Elseiver, Applied Science, 1989, pp. 1-10.
  14. Rossi, P. and Harrouche, N., “Mix-Design and Mechanical Behavior of Some Steel-Fiber-Reinforced Concretes Used in Reinforced Concrete Structures,” Materials and Structures, Vol. 23, 1990, pp. 256-266. https://doi.org/10.1007/BF02472199
  15. Rossi, P., “Steel Fiber Reinforced Concrete (SFRC): An example of French Research,” ACI Materials Journal, Vol. 91, No. 3, 1994, pp. 273-279.
  16. Rossi, P., “Les Betons de Fibres Metalliques,” Presses de l’ENPC Ed., Paris, 1998 (in French).
  17. Rossi, P., “Le Developpement Industriel des Betons de Fibres Metalliques,” Projet National BEFIM, Presses de l’ENPC Ed., Paris, 2002 (In French).
  18. AFNOR, Essai de Traction par Flexion, NFP 18-406, 1981 (In French).

Cited by

  1. An Experimental Study of Shear Capacity for One-way Concrete Slabs Reinforced with Amorphous Micro Steel Fibers vol.1, pp.2, 2013, https://doi.org/10.14190/JRCR.2013.1.2.128
  2. Flexural Performance Characteristics of Amorphous Steel Fiber-Reinforced Concrete vol.26, pp.4, 2014, https://doi.org/10.4334/JKCI.2014.26.4.483
  3. Flexural behaviour of amorphous metal-fibre-reinforced concrete vol.168, pp.1, 2015, https://doi.org/10.1680/stbu.13.00045
  4. Shrinkage cracking of amorphous metallic fibre-reinforced concrete vol.168, pp.4, 2015, https://doi.org/10.1680/stbu.13.00084
  5. A new developed approach for EDL induced from a single concentrated force vol.21, pp.5, 2016, https://doi.org/10.12989/scs.2016.21.5.1105
  6. Strengthening of RC Slabs with Symmetric Openings Using GFRP Composite Beams vol.5, pp.4, 2013, https://doi.org/10.3390/polym5041352