Title:
Shear Behavior and Crack Control Characteristics of Hybrid Steel Fiber-Reinforced Concrete Panels
Author(s):
Stamatina G. Chasioti and Frank J. Vecchio
Publication:
Structural Journal
Volume:
114
Issue:
1
Appears on pages(s):
209-220
Keywords:
cyclic; initial damage; panels; shear; steel fibers; synergy
DOI:
10.14359/51689164
Date:
1/1/2017
Abstract:
This paper investigates the beneficial influence of fiber hybridization on the shear strength of prismatic elements in terms of strength, deformation capacity, and cracking properties. Fourteen tests were performed using the Panel Element Tester Facility at the University of Toronto. Hooked-end steel macrofibers and straight short microfibers were combined in a normal-strength concrete matrix. The parameters examined were: the total fiber volumetric ratio, the
performance of hybrid steel fiber-reinforced concrete (HySFRC) versus its single fiber counterparts with the same total amount of fibers, the effect of cyclic loading, the influence of pre-cracking in longitudinal tension on shear response, and the effect of biaxial tensile stresses combined with shear. Test results showed that shear strength and effective stiffness were enhanced through fiber hybridization. For example, in panels having a total fiber volumetric ratio of 1.5%, the HySFRC panel exhibited a 10% enhancement in shear strength compared to its counterpart with macrofibers only. Synergy in shear increased with increasing fiber ratio. Crack widths and spacing were not affected by load reversals.
Related References:
1. Balaguru, P. N., and Shah, S. P., Fiber Reinforced Cement Composites, McGraw Hill, New York, 1992, 531 pp.
2. Bentur, A., and Mindess, S., Fiber Reinforced Cementitious Composites, Elsevier Applied Science, London, UK, 1990, 624 pp.
3. Taya, M., and Arsenault, R. J., Metal Matrix Composites, first edition, Pergamon Press, Oxford, UK, 1989, 274 pp.
4. Banthia, N., and Sappakittipakorn, M., “Toughness Enhancement in Steel Fiber Reinforced Concrete Through Fiber Hybridisation,” Cement and Concrete Research, V. 37, No. 9, 2007, pp. 1366-1372. doi: 10.1016/j.cemconres.2007.05.005
5. Xu, G.; Magnani, S.; and Hannant, D. J., “Durability of Hybrid Polypropylene-Glass Fiber Cement Corrugated Sheets,” Cement and Concrete Composites, V. 20, No. 1, 1998, pp. 79-84. doi: 10.1016/S0958-9465(97)00075-9
6. Shah, S. P., “Do Fibers Increase the Tensile Strength of Cement-Based Matrix?” ACI Materials Journal, V. 88, No. 6, Nov.-Dec. 1991, pp. 595-602.
7. Chasioti, S. G., and Vecchio, F. J., “Hybrid Steel Fiber Reinforced Concrete panels in Shear: Experimental Investigation,” Proceedings of the 7th RILEM Conference on High-Performance Fiber-Reinforced Cement Composites, Stuttgart, Germany, 2015, pp. 351-358.
8. Lawler, J. S.; Zampini, D.; and Shah, S. P., “Microfiber and Macrofiber Hybrid Fiber-Reinforced Concrete,” Journal of Materials in Civil Engineering, ASCE, V. 17, No. 5, 2005, pp. 595-604. doi: 10.1061/(ASCE)0899-1561(2005)17:5(595)
9. Naaman, A. E., and Reinhardt, H. W., “Setting the Stage: Toward Performance Based Classification of FRC Composites,” Proceedings of the 4th RILEM Conference on High-Performance Fiber-Reinforced Cement Composites, Ann Arbor, MI, 2003, pp. 1-4.
10. Naaman, A. E., and Reinhardt, H. W., “Proposed Classification of HPFRC Composites Based on Their Tensile Response,” Materials and Structures, V. 39, No. 5, 2006, pp. 547-555. doi: 10.1617/s11527-006-9103-2
11. Blunt, J., and Ostertag, C. P., “Performance-Based Approach for the Design of a Deflection Hardened Hybrid Fiber-Reinforced Concrete,” Journal of Engineering Mechanics, ASCE, V. 135, No. 9, 2009, pp. 978-986. doi: 10.1061/(ASCE)0733-9399(2009)135:9(978)
12. Aoude, H.; Belghiti, M.; Cook, W. D.; and Mitchell, D., “Response of Steel Fiber-Reinforced Concrete Beams with and without Stirrups,” ACI Structural Journal, V. 109, No. 3, May-June 2012, pp. 359-367.
13. Minelli, F., and Plizzari, G. A., “On the Effectiveness of Steel Fibers as Shear Reinforcement,” ACI Structural Journal, V. 110, No. 3, May-June 2013, pp. 379-389.
14. Meda, A.; Minelli, F.; Plizzari, G. A.; and Riva, P., “Shear Behaviour of Steel Fibre Reinforced Concrete Beams,” Materials and Structures, V. 38, No. 3, 2005, pp. 343-351. doi: 10.1007/BF02479300
15. Parra-Montesinos, G. J., “Shear Strength of Beams with Deformed Steel Fibers,” Concrete International, V. 28, No. 11, Nov. 2006, pp. 57-66.
16. ACI Committee 318, “Building Code Requirements for Structural Concrete and Commentary (ACI 318-08),” American Concrete Institute, Farmington Hills, MI, 2005, 465 pp.
17. ASTM C1609/C1609M, “Standard Test Methods for Flexural Performance of Fiber-Reinforced Concrete (Using Beam with Third-Point Loading),” ASTM International, West Conshohocken, PA, 2013, 9 pp.
18. RILEM TC 162-TDF., “RILEM TC 162-TDF: Test and Design Methods for Steel Fibre Reinforced Concrete,” Materials and Structures, V. 36, No. 262, 2003, pp. 560-567. doi: 10.1617/14007
19. Li, V. C.; Mishra, D. K.; Naaman, A. E.; Wight, J. K.; LaVave, J. M.; Wu, H.-C.; and Inada, Y., “On the Shear Behavior of Engineering Cementitious Composites,” Journal of Advanced Cement Based Materials, V. 1, No. 3, 1994, pp. 142-149. doi: 10.1016/1065-7355(94)90045-0
20. Panagiotou, M.; Trono, W.; Jen, G.; Kumar, P.; and Ostertag, C. P., “Experimental Seismic Response of Hybrid Fiber-Reinforced Concrete Bridge Columns with Novel Longitudinal Reinforcement Detailing,” Journal of Bridge Engineering, ASCE, V. 20, No. 7, 2014, doi: 10.1061/(ASCE)BE.1943-5592.0000684
21. Buzzini, D.; Dazio, A.; and Trüb, M., Quasi-Static Cyclic Tests on Three Hybrid Fibre Concrete Structural Walls, Intitiut für Baustatik und Konstruktion Bericht, ETH Zürich, Zürich, Switzerland, 2006. doi:10.3929/ethz-a-005195397.10.3929/ethz-a-005195397
22. CSA A23.1-09/A23.2-09, “Concrete Materials and Methods of Concrete Construction/Test Methods and Standard Practices for Concrete,” Canadian Standards Association, Toronto, ON, Canada, 2009, 674 pp.
23. ASTM C469/C469M, “Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression,” ASTM International, West Conshohocken, PA, 2014, 5 pp.
24. Pimanmas, A., and Maekawa, K., “Influence of Pre-Cracking on Reinforced Concrete Behavior in Shear,” Proceedings of JSCE, No. 38, 2001, pp. 207-223.
25. Suryanto, B.; Nagai, K.; and Maekawa, K., “Bidirectional Multiple Cracking Tests on High-Performance Fiber-Reinforced Cementitious Composite Plates,” ACI Materials Journal, V. 107, No. 5, Sept.-Oct. 2010, pp. 450-460.