Performance enhancement of externally bonded reinforced concrete beams with 3D hooked-end steel fibres

Ibrahim, S. Syed; Kandasamy, S.; Subashchandrabose, R; Baskar, S.; Madhava,

doi:10.1016/j.cscm.2022.e01181

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…Moreover, they offer economic advantages compared to metallic fibres. However, it is essential to note that polypropylene fibres exhibit lower tensile strength than their metallic counterparts, which may impact their performance under specific conditions [1][2][3][4][5][6][7][8][9][10]. Additionally, researchers have explored alternative methods to enhance shear performance in RC beams.…”

Section: Introductionmentioning

confidence: 99%

Performance of RC Beams under Shear Loads Strengthened with Metallic and Non-Metallic Fibers

Ghali,

El-Sayed,

Salah

et al. 2024

Buildings

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In our investigation, we subjected eleven reinforced concrete beams to a four-point bending system to explore the impact of varying fibre and ferrocement contents on their structural behaviour. These beams, measuring 1.7 m in length, featured a rectangular cross-section with dimensions of 150 mm by 300 mm. Our study focused on three key variables: steel fibre content (at levels of 0.5%, 1%, and 1.5%), glass fibre content (also at 0.5%, 1%, and 1.5%), and ferrocement content (evaluated with one or two layers of welded or expanded wire mesh). Our findings revealed that incorporating fibres with minimal shear reinforcement significantly enhanced the beams’ performance. Specifically: The specimen reinforced with 1.5% steel fibres exhibited the highest ultimate failure load, surpassing the control beam by an impressive 41.87%. The 0.5% glass fibre specimen experienced the least deflection at the ultimate load compared to the control beam. The 1.5% glass fibre specimen demonstrated superior energy absorption compared to the control specimen. Notably, using two layers of welded wire mesh proved most effective in enhancing the ultimate failure load when compared to both the control specimen and other ferrocement-strengthened beams.

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