Behavior of High Strength Concrete T-beams Containing Steel Fibers and Reinforced with Hybrid Bars | ||||
| Engineering Research Journal (Shoubra) | ||||
| Articles in Press, Accepted Manuscript, Available Online from 23 August 2025 | ||||
| Document Type: Research articles | ||||
| DOI: 10.21608/erjsh.2025.387358.1424 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
rana mohamed mohamed  1; MOHAMED ABDELGHAFFAR1; Ali saad Shanour 1; hadad said hadad2
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| 1Civil Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt. | ||||
| 2Reinforced concrete Department, National Center For Building Research, Egypt. | ||||
| Abstract | ||||
| The flexural behavior of high strength concrete T-beams containing steel fibers and reinforced with locally produced hybrid bars and hybrid schemes was investigated by using twelve half-scale beams divided to three groups. the variables are steel fiber ratios (0%, 0.4%, 0.8%), the reinforcement bar type steel, hybrid scheme (steel+glass fiber bars) and hybrid bars. By increasing steel fiber ratio for beams having the same reinforcement ratio; an increase in ultimate load capacity was noticed by 16%,13%,7% and 11%. Also, by increasing steel fiber ratio the cracking load increases by 28%,48%,20% and 30%. By using hybrid scheme the ultimate load capacity was increased by 39%,30% and 36%; while by using hybrid bars the ultimate load capacity was increased by 74%,65% and 66%. overall the test results showed a significant improvement in the ultimate load, crack load and stiffness of the high strength concrete beams by using steel fiber and hybrid bars. | ||||
| Keywords | ||||
| Steel fibers; Hybrid bars; High strength concrete | ||||
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