Vol. 2 No. 4 (2024): SJESR - December 2024
Articles

Effect of Crimped Steel Fiber Ratios on Punching Shear Strength of Lightweight Concrete Slabs

PDF
  • Saja Taji Abd Alkarem,
  • Ali K. Al-Asadi
Saja Taji Abd Alkarem Department of Civil Engineering, Thi-Qar University
Ali K. Al-Asadi Department of Civil Engineering. Thi-Qar University

Published 2025-01-19

Keywords

  • crimped steel fiber,
  • Punching shear failure,
  • lightweight concrete

Copyright (c) 2025 Samarra Journal of Engineering Science and Research

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Effect of Crimped Steel Fiber Ratios on Punching Shear Strength of Lightweight Concrete Slabs. (2025). Samarra Journal of Engineering Science and Research, 2(4), 24-41. https://doi.org/10.65115/9f4gtt73

Abstract

Punching shear failure is an unfavorable failure mechanism that happens abruptly with little displacement in reinforced concrete flat slabs subjected to focused stress. A localized punching failure in one column increases the shear force acting on the surrounding columns. This could cause the adjoining columns to also experience a punching failure, ultimately resulting in the progressive collapse of the entire structure. In a way akin to a chain reaction, progressive collapse is the term used to characterize the propagation of an initial local failure within a structure, which may lead to a partial or complete collapse. This paper aims to investigate the impact of steel fiber on the punching shear of lightweight slabs. Three slabs measuring 750 x 750 x 70 mm are created. Two percentage of crimped steel fiber are using the volume of steel fiber was (0.5, 1) %. The results showed It can be seen that the ultimate load capacity was increased by (47.36) and (76.05) respectively. For sample content (0.5 and 1) steel fiber compare to control slab (S1-L-W). The results showed that the use of crimped steel fiber improved the first crack load by (84, 182.9) % for slabs used crimped steel fiber. Overall, the findings of this study indicate that adding the crimped steel fibers have significantly increased the ultimate load capacity, Ductility and toughness of the tested RLWC slabs.

PDF

Downloads

Download data is not yet available.

References

  1. [1] Kadhim, S I 2019 Structural Behavior of Reactive Powder RC Slabs (B.SC. Thesis, University of Kufa).
  2. [2] Hassoun, M N and Al-Manaseer A 2015 Structural Concrete Theory and Design (Sixth Edition).
  3. [3] Georgewill, V A, Ngekpe, B E, Akobo, I Z S and Jaja, G W T 2019 Punching Shear Failure of Reinforced Concrete Flat Slab System-A Review (European Journal of Advances in Engineering and Technology) vol 6 no 2 pp 10–16.
  4. [4] Ali, H A, Shatha, S K and Ban, S A 2013 Experimental Study for Punching Shear Behavior in RC Flat Plate with Hybrid High Strength Concrete (Journal of Engineering and Development) vol 17 no 3 pp1813–7822.
  5. [5] Mirzaei Y., “Post-punching behavior of reinforced concrete slabs,” (No. THESIS). EPFL, 2010.
  6. [6] Mansour, F. R., Bakar, S. A., Ibrahim, I. S., Marsono, A. K., & Marabi, B. (2015). Flexural performance of a precast concrete slab with steel fiber concrete topping. Construction and Building Materials, 75, 112–120.
  7. [7] Abdel-Rahman A, Hassan N and Soliman A (2018) Punching shear behavior of reinforced concrete slabs using steel fibers in the mix. HBRC Journal 14(3): 272–281
  8. [8] Mashrei M, Sultan A and Mahdi A (2018) Effects of polypropylene fibers on compressive and flexural strength of concrete material. IJCIET 9(11): 2208–2217
  9. [9] Brandt, A. M. (2008). Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering. Composite Structures, 86 (1–3), 3–9.
  10. [10] Issa, M. S., Metwally, I. M. & Elzeiny, S. M. (2011). Influence of fibers on flexural behavior and ductility of concrete beams reinforced with GFRP rebars. Engineering Structures, 33 (5), 1754–1763
  11. [11] A. Muttoni, punching shear strength of reinforced concrete slabs without transverse reinforcement, ACI Struct. J. 105 (2008) 440–450.
  12. [12] American Concrete Institute [ACI] (2014b). Guide for structural lightweight-aggregate concrete (ACI 213r-14). Farmington Hills, MI: American Concrete Institute.
  13. [13] El-Sayed, W. S., Heniegal, A. M., Ali, E. E. & Abdelsalam, B. A. (2013). Performancenof lightweight concrete beams strengthened with GFrP. Port Said Engineering Research Journal, 17 (2), 105–117
  14. [14] Abdulrazzaq, O. A. & Khadhim, A. M. (2019). Studying the behaviour of lightweight deep beams with openings. International Journal of Engineering Technologies and Management Research, 6 (12), 89–100. https://doi org/10.29121/ijetmr.v6.i12.2019.558
  15. [15] Ahmad, M. r., Chen, B. & Shah, S. F. A. (2019). Investigate the influence of expanded clay aggregate and silica fume on the properties of lightweight concrete. Construction and Building Materials, 220, 253–266. https://doi.org/10.1016/j.conbuil dmat.2019.05.171
  16. [16] Atheer S. ISSA, Ali K. Al-ASADI Mechanical properties of lightweight Expanded clay aggregate (LECA) concrete)
  17. [17] Kuang J and Morley C (1993) Punching shear behavior of restrained reinforced concrete slabs. Structural Journal 89(1): 13–19
  18. [18] Xiao J, Wang W, Zhou Z, et al. (2018) Punching shear behavior of recycled aggregate concrete slabs with and without steel fibres. Frontiers of Structural and Civil Engineering 13(33): 725–740
  19. [19] American Concrete Institute [ACI] (2004). Standard Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-04). Farmington Hills, MI: American Concrete Institute.
  20. [20] ASTM International [ASTM] (2005). Standard specification for silica fume used in cementitious mixtures (ASTM C1240-05). West Conshohocken, PA: ASTM International.
  21. [21] ASTM International [ASTM] (2017). Standard specification for lightweight aggregates for structural concrete (ASTM C330/C330M- 17A). West Conshohocken, PA: ASTM International.
  22. [22] ASTM International [ASTM] (2019). Standard Specification for Chemical Admixtures for Concrete (ASTM C494/C494M-19). West Conshohocken, PA: ASTM International
  23. [23] ASTM International [ASTM] (2021). Standard Specification for Portland Cement (ASTM C150/C150M-21). West Conshohocken, PA: ASTM International

Similar Articles

You may also start an advanced similarity search for this article.