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Bond-Slip Mechanisms in Steel Micro-Fiber Reinforced Cement Composites

Published online by Cambridge University Press:  21 February 2011

N. Banthia
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
N. Yan
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
C. Chan
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
C. Yan
Affiliation:
Dept. of Civil Eng., University British Columbia, Vancouver, B.C., Canada, V6T 1Z4
A. Bentur
Affiliation:
National Building Research Institute, Technion, Israel Institute of Technology, Technion City, Haifa, 32000, Israel
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Abstract

Bond-slip characteristics for steel micro-fibers bonded in cement-based matrices were investigated by conducting single fiber pull-out tests. The influence of the following factors was investigated: fiber inclination, fiber size, fiber embedded length and matrix refinement using silica fume. It was found that the bond-slip characteristics of fibers aligned with respect to the loading direction were necessarily superior than those inclined at an angle. Inclined fibers supported smaller peak pull-out loads and absorbed lesser pull-out energies than the aligned fibers. The use of silica fume in the matrix was found to improve both the average interfacial bond strength and the maximum interfacial bond strength between the fiber and the matrix.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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References

1. Maage, M. Interaction between Steel Fibers and Cement-Based Matrices, Materials and Structures (RILEM), 10(59), 1977 pp. 297301.Google Scholar
2. Hughes, B.P. and Fattuhi, N.I., Fiber Bond Strengths in Cement and Concrete, Magazine of Concrete Research, 27 (92), 1975, pp. 161166.Google Scholar
3. , Gokoz, Ulker, N., and , Naaman, Antoine, A.E., Effect of Strain Rate on the Pull-out Behavior of Fibers in Mortar, International J. of Cement Composites and Lightweight Concrete, 3(3), 1981 pp. 187202.Google Scholar
4. Banthia, N. and Trottier, J.-F. Deformed Steel Fiber-Cementitious Matrix Bond under Impact, Cement and Concrete Research, 21(1), 1991 pp. 158168.Google Scholar
5. Banthia, N. and Trottier, J.-F., Micromechanics of Steel Fiber Pull-out, Rate Sensitivity at Very Low Temperatures, Cement and Concrete Composites, 14, 1992, pp. 119130.Google Scholar
6. Gray, R.J. and Johnston, C.D., The Effect of Matrix Composition of Fiber/Matrix Interfacial Bond Shear Strength in Fiber Reinforced Mortar, Cement and Concrete Research, 14, 1984, pp. 285296.Google Scholar
7. Banthia, N. and Trottier, J.-F., Effects of Curing Temperature and early Freezing on the Pull-out Resistance of Steel Fibers from a Cementitious Matrix, Cement and Concrete Research, 19(5), 1989 pp. 727736.Google Scholar
8. Gopalaratnam, V.S. and Abu-Mathkour, H.J., Investigation of the Pull-out Characteristics of Steel Fibers from Mortar Matrices, Proc. International Symp. on Fiber Reinforced Concrete, Madras, India, 1987, pp. 2.2012.211.Google Scholar
9. , Naaman, Antoine, E. and , Shah, Surendra, P., Pull-Out Mechanisms in Steel Fiber Reinforced Concrete, Jour. of the Structural Division, ASCE, Aug. 1976, pp. 15371548.Google Scholar
10. Banthia, N.A Study of Some Factors Affecting the Fiber-Matrix Bond in Steel Fiber Reinforced Concrete”, Can. Jour. of Civil Engineering, 17(4), 1990 pp. 610620.Google Scholar
11. Wei, Sun, Mandel James, A. and Samir, Said, Study of the Interface Strength in Steel Fiber Reinforced Cement-Based Composites, ACI Jour., July-August 1986 pp. 597605.Google Scholar
12. Igarashi, S. I. and Kawamura, M., Effects of the Addition of Silica Fume and Fine Aggregate on the Fracture Toughness for the Steel Fiber-Matrix Interfacial Zone, Proc. Fracture Processes in Concrete, Rock and Ceramics (Eds. Mier, J.G.M. van Rots, J.G. and Bekker, A.), E. & F. N. Spon, London, 1991 pp. 307315.Google Scholar
13. Al Khalaf, M.N., Page, C.L. and Ritchie, A.G.B., Effects of Fiber Surface Composition on Mechanical Properties of Steel Fiber Reinforced Mortars, Cement and Concrete Research, 10(1), 1980 pp. 7177.Google Scholar
14. Mayfield, Brian and , Zelly, Brian, M., Steel Fiber Treatment to Improve Bonds, Concrete, Concrete, 7(3), 1973, pp.3537.Google Scholar
15. Tattersall, G.H., Urbanowicz, C.R., Bond Strength in Steel Fiber Reinforced Concrete, Magazine of Concrete Research, 26(87), 1974 pp. 105113.Google Scholar
16. , Naaman, Antoine, E. and , Najm, Husamuddin, N., Bond-slip Mechanisms of Steel Fibers in Concrete, ACI Materials Jour., March-April, 1992 pp. 135145.Google Scholar
17. Rossi, P. and Chanvillard, G., A New Geometry of Steel Fiber for Fiber Reinforced Concrete, in High Performance Fiber Reinforced Cement Composites, (Eds. Reinhardt, H.W. and Naaman, A.E., RILEM, E. & SPON, F.N., London, pp. 129139.Google Scholar
18. Chanvillard, G. and Aitcin, P.-C., Micromechanical Modeling of the Pull-out Behavior of Wiredrawn Steel Fibers from Cementitious Matrices, in Fiber Reinforced Cementitious Materials (Eds., Mindess, S and Skalny, J.), Vol. 211, Materials Research Society, 1991 pp. 197202.Google Scholar
19. Morton, J. and Groves, G.W., The Cracking of Composites Consisting of Discontinuous Ductile Fibers in a Brittle Matrix- Effect of Fiber Orientation, J. of Materials Science, 9, 1974, 14361445.Google Scholar
20. Li., V.C., Wang, Y. and Backer, S., Effect of Inclining Angle, Bundling and Surface Treatment on Synthetic Fiber Pull-out from a Cement Matrix, Composites, 21(2), 1990 pp. 132140.Google Scholar
21. Brandt, A. M., On the Optimal Direction of Short Metal Fibers in Brittle matrix Composites, J. of Materials Science, 20, 1985 pp. 38313841.Google Scholar
22. Aveston, J., Mercer, R.A. and Sillwood, J.M., Fiber Reinforced Cements: Scientific Foundations for Specifications, Composites Standards Testing and Design, Proc. National Physical Laboratory Conference, U.K. 1974 pp. 95103.Google Scholar
23. Gray, R.J., Analysis of the Effect of Embedded Fiber Length on Fiber Debonding and Pull-out from an Elastic Matrix, Part 1: Review of Theories, J. of Materials Science, 19, 1984 pp. 861870.Google Scholar