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Abstract

Among the large variety of methods that have been applied to overcome the problems encountered in cementitious materials fiber reinforcement is gaining large attraction owing to the high tensile resistance exhibited by the fibers. For effective analysis of the post-cracking behavior of the fiber-reinforced materials, numerous researchers have studied analytical methods to predict the behavior of such composite materials based on the behavior of a single fiber. However, these methods failed to consider the change of the fiber interface occurring during the cracking process. Accordingly, this study proposes a fiber-bridging model that can consider the pre-debonding effect created in the cracking process. Analytical examples are presented to explore the effect of pre-debonding on the pull-out behavior of a single fiber and the bridging relation of the crack plane. Moreover, the behavioral difference is analyzed with respect to the type of fiber. The results reveal the dependence of the pre-debonding effect on the pull-out state, the stress of the fiber and, particularly, the influence of the eventual overstepping of the tensile strength during the increase stage of the stress.

Keywords

fiber-reinforced cementitious composites pre-debonding effect fiber bridging behavior post cracking behavior.

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References

Bentur, A. and Mindess, S. ( 1990). Fiber Reinforced Cementitious Composites, Elsevier, London.

Balaguru, P. and Shah, S.P. ( 1992). Fiber-Reinforced Cement Composites, McGraw-Hill, New york.

Wang, Y. , Li, V.C. and Backer, S. ( 1988). Modeling of Fiber Pull-out from a Cement Matrix , International Journal of Cement Composites and Lightweight Concrete, 10(3): 143-149.

Budiansky, B. , Evans, A.G. and Hutchinson , J.W. (1995). Fiber-Matrix Debonding Effects on Cracking in Aligned Fiber Ceramic Composites , International Journal of Solids and Structures , 32: 315-328.

Hsueh, C.H. ( 1996). Crack-wake Interfacial Debonding Criteria for Fiber-Reinforced Ceramic Composites, Acta Materialia, 44(6): 2211-2216.

Lin, Z. , Kanda, T. and Li, V.C. ( 1999). On Interface Property Characterization and Performance of Fiber Reinforced Cementitious Composites , Journal of Concrete Science and Engineering, 1: 173-184.

Ahn, B.K. ( 1997). Interfacial Mechanics in Fiber-reinforced Composites: Mechanics of Single and Multiple Cracks in CMCs, PhD Thesis, Virginia Polytechnic Institutite and State University, Blacksburg, Virginia.

Cook, J. and Gordon, J.E. ( 1964). A Mechanism for the Control of Crack Propagation in All-Brittle Systems, Proceedings of the Royal Society, A282: 508-520.

Li, V.C. , Stang, H. and Krenchel, H. ( 1993). Micromechanics of Crack Bridging in Fiber Reinforced Concrete, Journal of Materials and Structures, 26: 486-494.

10.

Naaman, A.E. and Reinhardt, H.W. ( 2003). High Performance Fiber Reinforced Cement Composites 4 (HPFRCC4), In: Proceedings of the Fourth International RILEM Workshop, RILEM Publications S.A.R.L., France.

11.

Fischer, G. and Li, V.C. ( 2006). Proceedings of Int’l RILEM Workshop on High Performance Fiber Reinforced Cementitious Composites(HPFRCC) in Structural Applications, RILEM Proceedings pro049, RILEM Publications S.A.R.L.

12.

Zhang, J. , Stang, H. and Li, V.C. ( 2001). Crack Bridging Model for Fibre Reinforced Concrete under Fatigue Tension, International Journal of Fatigue, 23(8): 655-670.

13.

Outwater, J.O. and Murphy, M.C. (1969). ‘‘On the Fracture Energy of Unidirectional Laminates,’’ In: Proceedings of the 26th Annual Technical Conference an Reinforced Plastics, paper 11-C-1, Composites Division of Society of Plastics Industry , Washington, DC, 1-8.

14.

Li, V.C. , Wang, Y. and Backer, S. (1990). Effect of Inclining Angle, Bundling, and Surface Treatment on Synthetic Fiber Pull-Out from a Cement Matrix, Composites, 21(2): 132-140.

15.

Kanda, T. and Li, V.C. ( 1998). Interface Property and Apparent Strength of High-strength Hydrophilic Fiber in Cement Matrix, Journal of Material in Civil Engineering, 10(1): 5-13.

16.

Maalej, M. , Li, V.C. and Hashida, T. ( 1995). Effect of Fiber Rupture on Tensile Properties of Short Fiber Composites, Journal of Engineering Mechanics , 121(3): 903-913.

17.

Kanda, T. and Li, V.C. ( 1999). Effect of Apparent Fiber Strength and Fiber-Matrix Interface on Crack Bridging in Cement Composites, Journal of Engineering Mechanics, 125(3): 290-299.

18.

Bentur, A. , Diamond, S. and Mindess, S. ( 1985). Cracking Processes in Steel Fiber Reinforced Cement Paste , Cement and Concrete Research, 15: 331-342.

19.

Bennett, J.A. and Young, R.J. (1998). The Effect of Fibre-Matrix Adhesion Upon Crack Bridging in Fibre Reinforced Composites , Composites Part A, 29A: 1071-1081.

20.

Redon, C. , Li, V.C. , Wu, C. , Hoshiro, H. , Saito, T. and Ogawa, A. ( 2001). Measuring and Modifying Interface Properties of PVA Fibers in ECC Matrix, Journal of Materials in Civil Engineering , 13(6): 399-406.

21.

Kanda, T. and Li, V.C. ( 2006). Practical Design Criteria for Saturated Pseudo Strain Hardening Behavior in ECC, Journal of Advanced Concrete Technology , 4(1): 59-72.

22.

Peerapong, S. (2003). Fracture Mechanics Based Fatigue Life Analysis of RC Bridge Slab Repair by Fiber Cementitious Materials , PhD Thesis, University of Tokyo, Tokyo, Japan.

23.

Lin, Z. and Li, V.C. (1997). Crack Bridging in Fiber Reinforced Cementitious Composites with Slip-hardening Interfaces , Journal of Mechanics and Physics of Solids, 45(5): 763-787.

Effect of Pre-debonding on Crack Bridging Behavior of Fiber-reinforced Cementitious Composite

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