Rehabilitation of Corrosion-Defected RC Beam-Column Members Using Patch Repair Technique

Alwash, Nameer A.; Kadhum, Mohammed M.; Mahdi, Ahmed M.

doi:10.3390/buildings9050120

Cited by 8 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overall, beams rehabilitated using these three approaches show promising results, not only in terms of significant ultimate capacity improvement but also without compromising structural ductility significantly. The results obtained in this study appear to be consistent with the findings of Alwash et al [6] on RC beams reinforced with mortar, which provided less ductile performance, and the use of GFRP [24] as reinforcement material in critical beams, which had a greater impact on ductility compared to mortar.…”

Section: Performance Of Beams Ductilitysupporting

confidence: 91%

“…Gergess et al [4] and Chalioris et al [5] focused on the repair of RC beams damaged to the point of yielding longitudinal reinforcing steel bars simulating RC structural elements in existing structures subjected to increased service loads. Alwash et al [6] rehabilitated reinforced concrete column-beam (RC) specimens that corroded when subjected to bending moments and axial forces. Corrosion reinforcement damage can be addressed by patching repair techniques and replacing the corroded steel reinforcement.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of Post-Spalling Reinforced Concrete Beam Repair Using Grouting and GFRP Reinforcement

Mansur,

Djamaluddin,

Parung

et al. 2024

Civ Eng J

View full text Add to dashboard Cite

Reinforced concrete beams must meet strength and durability standards, but aggressive environmental factors are the main cause of corrosion, which can affect the strength and durability of building structures. Maintenance, retrofitting, and reinforcement of structures are important to ensure safety. It is necessary to take appropriate measures to address corrosion problems in building structures early on. One way to achieve this is by repairing damaged structures using more modern and effective technologies and materials. This study aims to determine the flexural behavior of reinforced concrete (RC) beams repaired with Sikagrout-215 material and reinforced with GFRP sheets with different layer configurations. The study used three RC beams as the control group, three RC beams coated with Sikagrout-215 mortar, and six RC beams reinforced with GFRP. All beams were subjected to 4-point bending tests to determine their load capacity, crack response, ductility, and energy absorption capacity. The results showed that repair with grouting decreased the load capacity, while reinforcement with a combination of mortar grouting and GFRP increased the maximum load. Reinforcement of the support region could restore the function of the beam by 9.3%. Among the three types of reinforcement, BGRST significantly improved the first crack response, yield response, and ultimate performance of the RC beams. Beam fracture occurred more frequently with Sikagrout-215 mortar reinforcement, while reinforcement with GFRP composites partially protected the load capacity after fracture. Doi: 10.28991/CEJ-2024-010-01-08 Full Text: PDF

show abstract

Section: Performance Of Beams Ductilitysupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Study of Post-Spalling Reinforced Concrete Beam Repair Using Grouting and GFRP Reinforcement

Mansur,

Djamaluddin,

Parung

et al. 2024

Civ Eng J

View full text Add to dashboard Cite

show abstract

“…Beams that have been corroded on the steel reinforcement due to the influence of chloride attacks from the marine environment or due to the carbonation process will expand and cause longitudinal cracks around the concrete cover, resulting in spalling, as illustrated in Figure 3. This causes a decrease in the nominal moment capacity of reinforced concrete beams [8][9][10][11].…”

Section: Figure 1 Solid Waste From Construction Demolishingmentioning

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

View full text Add to dashboard Cite

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

show abstract

“…The findings also showed that ECC was ineffective for preventing the diagonal shear crack in the joint area. Alwash et al [27] and Bossio et al [28] studied the corrosion of RC joints when exposed to bending moment and axial forces. Their study was oriented on the loss of integrity, a decrease of load-bearing capacity, stiffness, and serviceability due to corrosion, and the on joints' rehabilitation with the patch repair technique (PRT).…”

Section: Introductionmentioning

confidence: 99%

Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

et al. 2022

View full text Add to dashboard Cite

Using a significant number of transverse hoops in the joint’s core is one recognized way for achieving the requirements of strength, stiffness, and ductility under dynamic loading in a column joint. The shear capacity of a joint is influenced by the concrete’s compressive strength, the anchoring of longitudinal beam reinforcement, the number of stirrups in the joint, and the junction’s aspect ratio. Seismic motion on the beam may produce shear capacity and bond breaking in the joint, causing the joint to fracture. Furthermore, due to inadequate joint design and details, the entire structure is jeopardized. In this study, the specimens were divided into two groups for corner and interior beam–column joints based on the joint reinforcement detailing. The controlled specimen has joint detailing as per IS 456:2000, and the strengthened specimen has additional diagonal cross bars (modified reinforcement technique) at the joints detailed as per IS 456:200. The displacement time history curve, load-displacement response curves, load-displacement hysteretic curve, and load cycle vs. shear stress were used to compare the results of the controlled and strengthened specimens. The findings show that adding diagonal cross bars (modified reinforcing techniques) to beam–column joints exposed to cyclic loads enhances their performance. The inclusion of a diagonal cross bar increased the stiffness of the joint by giving an additional mechanism for shear transfer and ductility, as well as greater strength with minimum cracks.

show abstract

Rehabilitation of Corrosion-Defected RC Beam-Column Members Using Patch Repair Technique

Cited by 8 publications

References 13 publications

Study of Post-Spalling Reinforced Concrete Beam Repair Using Grouting and GFRP Reinforcement

Study of Post-Spalling Reinforced Concrete Beam Repair Using Grouting and GFRP Reinforcement

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

Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

Contact Info

Product

Resources

About