Effect of strengthening materials on the behavior of curved beams with openings

Hekal, Ghada M.; Bashandy, Alaa A.; Abdou, Ebrahim H.; Elbehiry, Amgad; Dongxi, Xie; Elbaz, Khalid

doi:10.1016/j.aej.2023.07.047

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…Adhesive strength is also influenced by the composition of YSZ/polysilazane, the higher the YSZ composition of YSZ, the greater the increase in adhesive force caused by the compression of the reinforcer particles on YSZ when pulled by the dolly. 74 Due to a lack of homogeneity, a decrease in the amount of YSZ leads to a decrease in the value of adhesive power. This means that the spread of binder between YSZ becomes low, which causes an interface bond that isn't at its strongest.…”

Section: Resultsmentioning

confidence: 99%

A study on thermal behaviour of thermal barrier coating: investigation of particle size, YSZ/polysilazane, time and temperature curing effect

Widyastuti,

Zulfa,

Rizaldi

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

A study on thermal behaviour of thermal barrier coating: investigation of particle size, YSZ/polysilazane, time and temperature curing effect

Widyastuti,

Zulfa,

Rizaldi

et al. 2024

RSC Adv.

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“…It concluded that an opening near the center support did not weaken the beam. However, reduced beam stiffness could lead to excessive deflection under the service load and alter the distribution of internal moments and forces within the beam [6][7][8]. Authors in the study of Mansur [9] warned that openings in beams pose a potential risk.…”

Section: Introductionmentioning

confidence: 99%

Flexural Performance of Reinforced Concrete Beams with Openings Strengthened by Varying Thickness Steel Tubes

Dakhil,

Shuber

2024

ACSM

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This study investigates into the influence of opening size and steel tube thickness on the structural properties of reinforced concrete beams, particularly those with utility ducts and pipes. Four reinforced concrete beams were subjected to comprehensive testing, including a reference beam devoid of openings and three specimens featuring square openings of varying intensities. The evaluation encompassed crucial parameters such as load-deflection response, ultimate failure load, cracking load, cracking pattern, stiffness criteria, and ductility index. Employing the Digital Image Correlation (DIC) method, detailed analyses of cracking behavior were conducted. Unstrengthened beams exhibited a reduction in ultimate load capacity and stiffness, approximately 11.18% and 19.8% lower, respectively, compared to the control beam. Introduction of a steel tube significantly enhanced the performance of opening beams, manifesting in improved cracking load, cracking formation, ultimate capacity, stiffness, and ductility index, thereby promoting more ductile behavior. Strengthened beams with 2 and 3 mm-thick steel tubes demonstrated an approximate 9.27% and 28.47% increase in ultimate load compared to their unstrengthened counterparts. Beams featuring 3 mm-thick steel tubes exhibited behavior akin to the reference beam in terms of load-vertical displacement curves, albeit with a 14.12% disparity in ultimate load capacity. Despite a somewhat identical crack morphology across all tested beams, unstrengthened beams displayed higher crack width and deflection than their strengthened counterparts.

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Quantifying the flexural stiffness changes in the concrete beams with externally bonded carbon fiber sheets under elevated environment temperature

Gribniak,

Sultani,

Rimkus

et al. 2024

Alexandria Engineering Journal

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Effect of strengthening materials on the behavior of curved beams with openings

Cited by 5 publications

References 28 publications

A study on thermal behaviour of thermal barrier coating: investigation of particle size, YSZ/polysilazane, time and temperature curing effect

A study on thermal behaviour of thermal barrier coating: investigation of particle size, YSZ/polysilazane, time and temperature curing effect

Flexural Performance of Reinforced Concrete Beams with Openings Strengthened by Varying Thickness Steel Tubes

Quantifying the flexural stiffness changes in the concrete beams with externally bonded carbon fiber sheets under elevated environment temperature

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