Seismic performance of corroded non-seismically and seismically detailed RC beam-column joints rehabilitated with High Strength Fiber Reinforced Concrete

Dangwal, Shubham; Singh, Heaven

doi:10.1016/j.engstruct.2023.116481

Cited by 11 publications

(2 citation statements)

References 53 publications

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“…Repairing or strengthening the reinforced concrete beams has been proposed by some researchers to extend the service life of the structures. Wrapping grout with metallic connectors was developed to increase the flexural capacity of concrete beams [12][13][14][15]. A repair alternative to rehabilitate corrosion-defected reinforced concrete (RC) beamcolumn members has been developed using new mortar on damaged concrete covers [8].…”

Section: Initiation Of Corrosion Further Corrosion Cracking Of Concre...mentioning

confidence: 99%

“…Canaval et al [13] have conducted an investigation on reinforced concrete beams strengthened by wrapping grouting mortar with metallic connectors. Alwash et al [15] studied the efficiency of patch repair to rehabilitate corrosion-defected reinforced concrete (RC) beam-column members when exposed to bending moments and axial forces. He concluded that the corroded reinforced concrete beams showed a significant deterioration in their structural performance and integrity.…”

Section: Initiation Of Corrosion Further Corrosion Cracking Of Concre...mentioning

confidence: 99%

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Flexural Behavior of Repaired Reinforced Concrete Beams Due to Corrosion of Steel Reinforcement Using Grouting and FRP Sheet Strengthening

Djamaluddin,

Irmawaty,

Fakhruddin

et al. 2024

Civ Eng J

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One of the common causes of damage to the concrete structures close to the sea line is corrosion on the steel reinforcement in the concrete, which may cause spalling on the concrete cover. This paper presents the results of the simulation of the corroded reinforced concrete beams, which were repaired using the grouting method and FRP strengthening. The concrete cover of the beam specimens on the tensile side was filled with grouted concrete instead of filled with normal concrete to simulate the repair of concrete spalling. Three types of beam specimens were prepared and tested under a monotonic loading. BG and BPF were the specimens for beams with grouting only and beams with grouting and flexural strengthening using FRP sheets, respectively. Flexural strengthening using FRP sheets was carried out to restore the flexural capacity. As a comparison, control beams were also prepared in the form of normal reinforced concrete (BN). The results showed that the BG beam had a capacity of only about 50% compared to the control beam (BN). However, applying flexural strengthening using FRP sheet as on the type BGF beams showed that it had approximately the same capacity as BN specimens. This indicated that the repair method using grouting on damaged concrete covers and strengthening using FRP sheets was an effective alternative to repairing the corroded reinforced concrete beams. Doi: 10.28991/CEJ-2024-010-01-014 Full Text: PDF

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Section: Initiation Of Corrosion Further Corrosion Cracking Of Concre...mentioning

confidence: 99%

Section: Initiation Of Corrosion Further Corrosion Cracking Of Concre...mentioning

confidence: 99%

Flexural Behavior of Repaired Reinforced Concrete Beams Due to Corrosion of Steel Reinforcement Using Grouting and FRP Sheet Strengthening

Djamaluddin,

Irmawaty,

Fakhruddin

et al. 2024

Civ Eng J

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Performance of corroded RC beam–column joints repaired using a hybrid scheme with HSFRC and stirrups replacement

Dangwal,

Kumar,

Singh

et al. 2024

Structural Concrete

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The present study proposes a new technique for retrofitting corroded beam–column joints (BCJs) using high‐strength fiber reinforced concrete (HSFRC) and stirrups replacement. The entire corrosion‐affected concrete was removed and replaced with HSFRC. The corroded reinforcing bars were cleaned and treated to resist the progression of the corrosion mechanism. The severely pitted stirrups were replaced with new stirrups. Four exterior BCJ specimens were tested under seismic loading to determine the effectiveness of the proposed retrofitting scheme. The efficacy of the proposed retrofitting scheme is determined in terms of the hysteresis response, stiffness degradation, cumulative energy dissipation, ductility, and damage index. A significant delay in the fracture of severely pitted reinforcing bars was experienced for the corrosion‐damaged retrofitted specimens compared to the corroded unretrofitted specimen. The cumulative energy dissipation of the corroded unretrofitted and corroded retrofitted specimens was 0.4 and 1.3 times that of the reference specimen, respectively, indicating the effectiveness of the retrofitting strategy, as both specimens had similar corrosion rates. The test results indicated that the proposed retrofitting technique effectively improved the seismic performance of the corrosion‐damaged BCJs.

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Numerical Investigation of the Effect of Varying Levels of Corrosion on Seismic Performance of Beam-Column Joints

Shekhawat,

Dangwal,

Singh

2024

Lecture Notes in Civil Engineering

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Seismic performance of corroded non-seismically and seismically detailed RC beam-column joints rehabilitated with High Strength Fiber Reinforced Concrete

Cited by 11 publications

References 53 publications

Flexural Behavior of Repaired Reinforced Concrete Beams Due to Corrosion of Steel Reinforcement Using Grouting and FRP Sheet Strengthening

Flexural Behavior of Repaired Reinforced Concrete Beams Due to Corrosion of Steel Reinforcement Using Grouting and FRP Sheet Strengthening

Performance of corroded RC beam–column joints repaired using a hybrid scheme with HSFRC and stirrups replacement

Numerical Investigation of the Effect of Varying Levels of Corrosion on Seismic Performance of Beam-Column Joints

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