Experimental Evaluation of the Shear Stress of Concrete with Macro-Synthetic Fibers and Steel Fibers for Structural

Abstract:

This work evaluates the shear stress in concrete beams with the addition of reinforcing fibers. Since there is no established standard in Peru, it was proposed to use the "JSCE-SF6" test method recommended by the Japanese Society of Civil Engineers and an analytical model to determine the shear strength of concrete with fibers. For this purpose, steel and polypropylene fibers were used in the proportions of 3kg, 5kg, 7kg and 9kg for each design. The main test was the shear test based on Japanese standards, however, secondary tests such as compression and flexural tests were also performed. The results obtained showed the contribution of the fibers in the three tests performed. In the shear test, the polypropylene fibers obtained a higher shear strength in all their mix designs in the same proportions. Additionally, an analytical model is proposed to determine the shear stress in concrete with fibers, which includes as variables the compressive strength, the mass fraction of fibers and the tensile strength of the fibers, which generates acceptable values close to those obtained experimentally with the Japanese Standard Shear Test.

• Periodical: Advances in Science and Technology (Volume 151)
• Pages: 47-54
• DOI: https://doi.org/10.4028/p-o5LkJr
• Online since: June 2024
• Authors: Jasson Hilton Espinoza Moreno*, Saomy Llantoy Arapa, Pablo Jhoel Peña Torres
• Keywords: Concrete, Fibers, Shear Stress, Shear Test

References

[1] A. Bentur, S. Mindess, Cementitious composites, in: Fiber Reinf. EMF. Compos., 2nd ed., Taylor & Francis, Oxon, 2007, p.1–7

DOI: 10.1016/0010-4361(79)90446-4

[2] ACI Committee 544, Guide for Design with Fiber Reinforced Concrete, 2018.

[3] S. Yin, R. Tuladhar, F. Shi, M. Combe, T. Collister, N. Sivakugan, Use of plastic macrofibers in concrete: a review, Constr. Build. Mate. 93 (2015) 180–188, https:// doi.org/.

DOI: 10.1016/j.conbuildmat.2015.05.105

[4] N. Yousefieh, A. Joshaghani, E. Hajibandeh, M. Shekarchi, Influence of fibers on drying shrinkage in restrained concrete, Constr. Build. Mate. 148 (2017) 833– 845

DOI: 10.1016/j.conbuildmat.2017.05.093

[5] Civil Engineering Committee of the Japanese Institute of Civil Engineers. (1991). "Recommendations for Design and Construction of High Performance Fiber Reinforced Cement Composites with Multiple Fine Cracks (HPFRCC)." Japan Society of Civil Engineers, Tokyo, p.52.

[6] Swamy, RN, Narayan, J., Roy, Chiam, TP (1993), Influence of steel fibers on shear strength of lightweight concrete I – Beams, ACI Structural Journal, Vol.90, No. 1, p.103 – 114

DOI: 10.14359/4201

[7] Shear behavior of concrete reinforced with steel fibers. (2012). Australasian Structural Engineering Conference. (p.8). Perth, Australia.

[8] CSA, Canadian Highway Bridge Design Code. Supplement No. 1 to CAN/CSA S6-14 (S6.1S1-14), Canadian Standards Association (CSA),, Mississauga, ON, Canada, 2014. ISBN 978-1-77139-412-3.

DOI: 10.1139/l92-117

[9] ACI 318-19 Building Code Requirements for Structural Concrete and Commentary. American Concrete Institute, 2019

DOI: 10.14359/51716937

[10] As3600, Concrete structures, Australian, Standards Australia, (2009)

[11] Zuaiter, M., El-Hassan, H., El-Maaddawy, T., El-Ariss, B. (2023). Flexural and shear performance of geopolymer concrete reinforced with hybrid glass fibers. Journal of Building Engineering.(72) https://www.sciencedirect.com/science/article/abs/pii/S2352710223007593

DOI: 10.1016/j.jobe.2023.106580

[12] AASHTO, (2017). Bridge Design Guide Specifications for GFRP Reinforced Concrete Bridge Decks and Traffic Railings, AASHTO LRFD-17, AASHTO, Washington, DC, USA. http://www.dot.state.mn.us/bridge/.

DOI: 10.1061/41016(314)11

[13] G. Danying, Z. Changhui, Shear strength prediction model of FRP bar-reinforced concrete beams without stirrups, Math. Probl. Eng. (2020) 1–11, https://doi. org/

DOI: 10.1155/2020/7516502

[14] D. Gao, C. Zhang, Shear strength calculating model of FRP bar reinforced concrete beams without stirrups, Eng. Struct. 221 (2020), 111025, https://doi.org/.

DOI: 10.1016/j.engstruct.2020.111025

[15] J.B. Ghazi, A.R. Yousif, Predicting shear capacity of FRP-reinforced concrete beams without stirrups by artificial neural networks, gene expression programming, and regression analysis, Adv. Civ. Eng. (2018) 1–16.

DOI: 10.1155/2018/5157824

[16] R. Narayanan, I.Y.S. Darwish, Use of steel fibers as shear reinforcement, ACI Struct. J. 84 (3) (May 1987) 216–227.

DOI: 10.14359/2654