Dimensional Variations of Cement Matrices in the Presence of Metal Fibers

Authors: Fatima Setti, Ezziane Karim, Setti Bakhti, Negadi Kheira

Abstract:

The objective of this study is to present and to analyze the feasibility of using steel fibers as reinforcement in the cementations matrix to minimize the effect of free shrinkage which is a major cause of cracks that have can observe on concrete structures, also to improve the mechanical resistances of this concrete reinforced. The experimental study was performed on specimens with geometric characteristics adapted to the testing. The tests of shrinkage apply on prismatic specimens, equipped with rods fixed to the ends with different dosages of fibers, it should be noted that the fibers used are hooked end of 50mm length and 67 slenderness. The results show that the compressive strength and flexural strength increases as the degree of incorporation of fibbers increases. And the shrinkage deformations are generally less important for fibers-reinforced concrete to those appearing in the concrete without fibers.

Keywords: Concrete, Steel fibers, Compression, Flexural, Deformation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1088448

References:

[1] R. Nilica, H. Harmuth, “Mechanical and fracture mechanical characterization of building materials used for external insulation composite systems,” Cement and Concrete Research, vol. 35, 2007, pp. 1641-1645.
[2] R. Roziere, S. Granger, PH. Turcry, and A. Loukili, “Influence of paste volume on shrinkage cracking and fracture,” Cement and concrete composite, vol. 29, 2007, pp. 626-636.
[3] H. Houari, “Contribution à l’étude du comportement béton renforcé de fibres métalliques soumis à l’action des charges maintenues et cycliques,” INSA Lyon, 1993.
[4] A. Belferrag, A. Kriker, and E. Khenfer, “Valorisation des fibres métalliques issues des déchets pneumatiques dans les matériaux de constructions en zones sahariennes,” Annals of the Faculty of Sciences and Engineering Sciences, vol.1, 2007, pp.14-20.
[5] V.S. Gopalaratman, S.P. Shah, “Softening Response of Plain Concrete in Direct Tension,” ACI. Journal, vol.82, 1985, pp. 310-323.
[6] R.M. Damgir, Y. M. Ghugal, “Prediction of compressive strength by incorporating steel fibers,” 35th Conference on Our World in Concrete & Structures, Singapore, 2010, pp. 25-27.
[7] M. RamlI, E. Thanon dawood, “High-Strength Flowable Mortar Reinforced by Steel Fiber,” Slovak journal of civil engineering, vol.19, 2011, pp. 10-16.
[8] P.S. Mangat, M. Motamedi Azari houses, “A theory for the free shrinkage of steel fibers reinforced cement matrices,” journal of materials science, vol. 19, 1984, pp. 2183-2194.
[9] B. Barr, SB. Hoseindin, and M.A. Biyi, “Shrinkage of concrete stored in nature environment,” cement and concrete composites, vol. 25, issue 1, pp.19-29, junary 2003.
[10] K. Abdou, H. Houari, “Influence of steel fibers on the dimensional changes and significants matrices admixtures,” Science & Technology B - no.26, pp. 43-48, December 2007.
[11] M. Beddar, L. Belagraa, “Influence of fibrous waste addition on the shrinkage of mortars, Asian journal of civil engineering,” vol. 4, no. 1, pp. 65-72, 2003.
[12] J. C. Chern, C. H. Young, “Compressive creep and shrinkage of steel fiber reinforced concrete,” The International Journal of Cement Composites and Lightweight Concrete, vol. 11, no. 4, pp. 205-214, 1989.
[13] C. Jonas, “Shrinkage cracking of steel fiber reinforced self-compacting concrete overlays Test methods and theoretical modeling,” Doctoral thesis, Lulea University of Technology, 2006, 261 pages.