Strengthening of shear-deficient RC beams using near surface embedded precast cement-based composite plates (PCBCPs)

Afefy, Hamdy M.; Baraghith, Ahmed T.; Hassan, Ali; Abuzaid, Mohamed K.

doi:10.1016/j.engstruct.2021.112765

Cited by 14 publications

(1 citation statement)

References 31 publications

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“…In recent years, numerous studies have examined the structural performance of SHCC-RC composite components. They figured out how to combine SHCC with a variety of elements to enhance their strength and ductility [19][20][21][22][23][24][25][26][27]. The structural application of SHCC pre-cast forms is still a major issue, despite the fact that several studies have been undertaken on SHCC materials and members.…”

Section: Introductionmentioning

confidence: 99%

Behavior of RC Beams with Circular Openings reinforced with Strain-Hardening Cementitious Composites (SHCC)

Etman

Baraghith

Behiry

et al. 2023

International Journal of Advances in Structural and Geotechnica

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In this paper, the effect of using Strain-Hardening Cementitious Composites (SHCC) to improve the shear behavior of reinforced concrete (RC) beams with web openings was experimentally investigated. A four-point bending test was performed on seven specimens. One of them, control beam BC, had no web opening, but the other six specimens were tested with web opening. The studied parameters were the effect of employing either plain or reinforced prefabricated SHCC and the influence of prefabricated SHCC configurations around web openings. On the basis of cracking patterns, load-deflection behavior, ductility, and initial stiffness, the shear behavior was evaluated. According to experimental findings, the presence of a web circular opening in the shear zone decreased the shear strength by about 46%. Nevertheless, the use of prefabricated SHCC shapes enhanced the shear strength of the tested specimens by up to 60% relative to the control specimen (BC-C). As soon as reinforcements were added to prefabricated SHCC, it was abundantly clear that the ultimate load and cracking behavior of RC beams with openings had improved.

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Section: Introductionmentioning

confidence: 99%

Behavior of RC Beams with Circular Openings reinforced with Strain-Hardening Cementitious Composites (SHCC)

Etman

Baraghith

Behiry

et al. 2023

International Journal of Advances in Structural and Geotechnica

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Effectiveness of external prestressing in enhancing the non-ductile hanger failure mechanism in reinforced concrete inverted T-beams

Atta,

Behiry,

Haraz

2024

Front. Struct. Civ. Eng.

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Recently, inverted T-beams have been used in reinforced concrete (RC) bridges to support transverse precast stringers. Inverted T-beams, contrary to practice with conventional beams, are loaded on the flanges upper surface. This loading configuration causes hanger failure due to the generation of vertical tensile stresses near the bottom of the web. The key purpose of this study is to investigate the efficiency of vertical external prestressing stainless-steel bars in mitigating non-ductile hanger failure in reinforced concrete inverted T-beams. An experimental study on six inverted-T beams, including two un-strengthened specimens, was carried out. The study showed that the value of the prestressing level had a considerable impact on the performance of hanger mechanism in relation to crack pattern, ultimate loads, cracking behavior, load–deflection, strains, and ductility. The experimental results indicated that the suggested method for strengthening inverted T-beams had efficacy in reducing the seriousness of the non-ductile hanger failure and resulted in a strength increase of up to 53% when compared to that of the un-strengthened specimen. Additionally, two analytical models for estimating the hanger capacity and the average crack width of the strengthened RC inverted T-beams were proposed. The models that were proposed exhibited a high degree of agreement with the experimental results.

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Effectiveness of SHCC strips reinforced with glass fiber textile mesh layers for shear strengthening of RC beams: Experimental and numerical assessments

Baraghith

Mansour

Behiry

et al. 2022

Construction and Building Materials

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Strengthening of shear-deficient RC beams using near surface embedded precast cement-based composite plates (PCBCPs)

Cited by 14 publications

References 31 publications

Behavior of RC Beams with Circular Openings reinforced with Strain-Hardening Cementitious Composites (SHCC)

Behavior of RC Beams with Circular Openings reinforced with Strain-Hardening Cementitious Composites (SHCC)

Effectiveness of external prestressing in enhancing the non-ductile hanger failure mechanism in reinforced concrete inverted T-beams

Effectiveness of SHCC strips reinforced with glass fiber textile mesh layers for shear strengthening of RC beams: Experimental and numerical assessments

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