Experimental study of torsional strength of RC beams constructed with HPFRC composite mortar

Kim, Jinsup; Kwon, Minho; Seo, Hyun-Su; Lim, Jeong-Hee

doi:10.1016/j.conbuildmat.2015.05.018

Cited by 11 publications

(2 citation statements)

References 13 publications

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“…This is because of the presence of transverse reinforcement in the beams BN21 and BN40, which contributed to both the ultimate torque and twisting angle. Finally, the strain at the ultimate torque of the beams BF1.5 and BF2.0 were less compared to the beams BN21 and BN40, which means that the transverse reinforcement has less contribution in the torsional load capacity [60]. Table 3 indicates the torsional behaviors of the RC beams strengthened with different types of cementitious materials and studied by various authors.…”

Section: Torsional Behaviorsmentioning

confidence: 99%

Structural Strengthening/Repair of Reinforced Concrete (RC) Beams by Different Fiber-Reinforced Cementitious Materials - A State-of-the-Art Review

Bahij¹,

Omary²,

Feugeas³

et al. 2020

jcde

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In the last few decades, premature deterioration of reinforced concrete (RC) structures has become a serious problem because of severe environmental actions, overloading, design faults, and materials deficiencies. Therefore, repair and strengthening of RC elements in existing structures are very important to extend their service life. There are numerous methods for retrofitting and strengthening of RC structural components such as; steel plate bonding, external pre-stressing, section enlargement, fiber-reinforced polymer (FRP) wrapping, and so on. Although these modifications can successfully improve the load-bearing capacity of the beams, but they are still prone to corrosion damage resulting in failure of the strengthened elements. Therefore, many researchers used cementitious materials due to their low-cost, corrosion resistance, and resulted in the improvement of the tensile and fatigue behaviors. Different types of cementitious materials such as; fiber-reinforced concrete (FRC), high performance concrete (HPC), high strength concrete (HSC), ultra-high performance concrete (UHPC), steel fiber-reinforced high strength lightweight self-compacting concrete (SHLSCC), fabrics reinforced cementitious material (FRCM) and so on have been used to strengthen structural elements. This paper summarizes previously published research papers concerning the structural behaviors of RC beams strengthened by different cementitious materials. Shear behaviors, flexural characteristics, torsional properties, deflection, cracking propagation, and twisting angle of the strengthened beams are explained in the present paper. Finally, proper methods are proposed for strengthening RC beams under various loading conditions.

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Section: Torsional Behaviorsmentioning

confidence: 99%

Structural Strengthening/Repair of Reinforced Concrete (RC) Beams by Different Fiber-Reinforced Cementitious Materials - A State-of-the-Art Review

Bahij¹,

Omary²,

Feugeas³

et al. 2020

jcde

View full text Add to dashboard Cite

show abstract

“…Moreover, extensive research has explored detailed experimental, numerical, and analytical methods to investigate the dynamic response of fiber-reinforced-concrete (FRC) beams [ 1 , 16 , 33 , 34 , 35 , 36 , 37 , 38 ]. For instance, considerable attention has been devoted to investigating the performance of concrete beams reinforced with Glass FRP (GFRP) bars, particularly under impact loading conditions [ 39 , 40 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Shear Performance of Corroded Steel Fiber Reinforced Concrete Beams under Impact Load

Gu,

Li,

Huang

et al. 2024

Materials

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With the growing use of steel-fiber-reinforced-concrete (SFRC) beams in environmentally friendly and rapid construction, it is essential to assess their impact performance. These beams may encounter unexpected impact loadings from accidents or terrorist attacks during service life. This study explored the impact of steel fiber content and drop hammer height on the impact load testing of corrosion-treated SFRC beams. Experiments were conducted with varying steel fiber contents (0%, 0.25%, 0.5%, 0.75%, and 1.0%), and drop hammer height (1 m, 2 m, and 3 m). The corrosion test demonstrates that SFRC beams supplemented with steel fibers showcase a diminished surface rust spot area in comparison to those lacking fibers. This improvement is ascribed to the bonding between fibers and the concrete matrix, along with their current-sharing properties. SFRC beams, subjected to impact testing, exhibit concrete crushing at the top without spalling, showcasing improved impact resistance due to increased fiber content, which reduces crack formation. Additionally, different fiber contents yield varied responses to impact loads, with higher fiber content notably enhancing overall beam performance and energy dissipation capacity. Energy dissipation analysis shows a moderate increase with higher fiber contents, and impulse impact force generally rises with fiber content, indicating improved impact resistance.

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Research Progress on the Torsion Behavior of Externally Bonded RC Beams: Review

Rajguru

Patkar

2022

Recent Trends in Construction Technology and Management

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Experimental study of torsional strength of RC beams constructed with HPFRC composite mortar

Cited by 11 publications

References 13 publications

Structural Strengthening/Repair of Reinforced Concrete (RC) Beams by Different Fiber-Reinforced Cementitious Materials - A State-of-the-Art Review

Structural Strengthening/Repair of Reinforced Concrete (RC) Beams by Different Fiber-Reinforced Cementitious Materials - A State-of-the-Art Review

Study on Shear Performance of Corroded Steel Fiber Reinforced Concrete Beams under Impact Load

Research Progress on the Torsion Behavior of Externally Bonded RC Beams: Review

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