Effect of Corrosion on Bond Mechanism between Extremely Low-Strength Concrete and Plain Reinforcing Bars

Göksu, Çağlar; Inci, Pinar; İlki, Alper

doi:10.1061/(asce)cf.1943-5509.0000811

Cited by 17 publications

(4 citation statements)

References 20 publications

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“…Extensive works have been carried out to investigate the effect of corrosion on the bonding between concrete and rebar [ 16 , 17 , 18 ]. Goksu and Inci [ 19 ] found that the better mechanical interlock between slightly corroded rebar and surrounding concrete increased the bond strength between the rebar and surrounding concrete, as was also reported in the studies by Choi [ 20 ] and Kim [ 21 ]. However, for a higher degree of corrosion, the breaking down of the mechanically weak layers of the corrosion products with increasing corrosion, and the ductility of the structure, more rapidly decrease in this case [ 21 , 22 ].…”

Section: Introductionsupporting

confidence: 58%

Corrosion-Effected Bond Behavior between PVA-Fiber-Reinforced Concrete and Steel Rebar under Chloride Environment

Zhang

Wang

2023

Materials

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Corrosion-effected bond behavior between polyvinyl-alcohol-fiber-reinforced concrete and steel rebar under a chloride environment is the experimental subject studied in the present work. Twenty-four pull-out specimens are designed and subjected firstly to an accelerated corrosion test. The effects of polyvinyl alcohol fibers on the cracking behavior, chloride penetration of concrete members and the corrosion loss of steel rebars during the corrosion test are discussed. After this, these corroded specimens are subjected to a pull-out test. The failure mode, the bond-slip curves and the typical bond-stress values are measured during the test. The effects of polyvinyl alcohol fibers and corrosion loss on bond behavior between polyvinyl-alcohol-fiber-reinforced concrete and steel rebar are clarified. Results show that the polyvinyl-alcohol-fiber-reinforced concrete exhibits worse resistance to corrosion damage than plain concrete. The cracking width, chloride penetration depth in concrete and the corrosion loss of steel rebar are more serious for the specimens with more polyvinyl alcohol fibers. The polyvinyl alcohol fibers also negatively affect bonding in ascending branches for both the specimens, but improve the bonding in descending branches after peak stress in the case of splitting. In the present test, the bond strength of corrosive specimens is increased slightly and then decreases gradually with the deepening of corrosion loss. The failures of specimens change from pull-out to splitting-pull-out as the corrosion time exceeds 30 days. Compared with uncorroded specimens, the maximum degradation of bond strength is about 50.1% when the corrosion is increased from 0% to 15%.

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Section: Introductionsupporting

confidence: 58%

Corrosion-Effected Bond Behavior between PVA-Fiber-Reinforced Concrete and Steel Rebar under Chloride Environment

Zhang

Wang

2023

Materials

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“…Ghatte [11] conducted experimental and numerical investigations on the load-deflection performance of six T-shaped SCC (self-compacting concrete) beam-column connections on the top floor of a building. Goksu et al [12] proposed a bond-slip model to consider the effects of corrosion on the bond characteristics between extremely low-strength concrete and plain reinforcing bars. The test results demonstrated that the corrosion of reinforcing bars had a significant effect on the strength and deformability characteristics of substandard reinforced concrete columns subjected to the combined actions of axial and reversed cyclic lateral loads.…”

Section: Of 17mentioning

confidence: 99%

Study on the Bending and Joint Performances of Reinforced Concrete Beams Using High-Strength Rebars

2021

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High-strength reinforcing bars have high yield strengths. It is possible to reduce the number of reinforcing bars placed in a building. Accordingly, as the amount of reinforcement decreases, the spacing of reinforcing bars increases, workability improves, and the construction period shortens. To evaluate the structural performance of high-strength reinforcing bars and the joint performance of high-strength threaded reinforcing bars, flexural performance tests were performed in this study on 12 beam members with the compressive strength of concrete, the yield strength of the tensile reinforcing bars, and the tensile reinforcing bar ratio as variables. The yield strengths of the tensile reinforcement and joint methods were used as variables, and joint performance tests were performed for six beam members. Based on this study, the foundation for using high-strength reinforcing bars with a design standard yield strength equal to 600 MPa was established. Accordingly, mechanical joints of high-strength threaded reinforcing bars (600 and 670 MPa) can be used. All six specimens were destroyed under more than the expected nominal strength. Lap splice caused brittle fractures because it was not reinforced in stirrup. Increases of 21% to 47% in the loads of specimens using a coupler and a lock nut were observed. Shape yield represents destruction—a section must ensure sufficient ductility after yielding. Therefore, a coupler and lock nut are effective.

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“…In the process of long-term service of concrete structures in coastal and salt lake areas, concrete cracking and steel corrosion are relatively common [3,4]. Rebars corrosion and concrete cracking will lead to degradation of the bonding properties between the two, and then lead to the decline of the carrying performance of reinforced concrete members and even ineffectiveness [5][6][7][8]. Scholars at home and abroad have carried a lot of experimental studies and theoretical analyses on the bonding properties of corroded rebars and ordinary concrete [9,10].…”

Section: Introductionmentioning

confidence: 99%

Bonding Properties Between Corroded Steel Bars and High Performance Concrete

Yu,

2023

Advances in Transdisciplinary Engineering

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Focus on the behavior of the bond between steel bars and high performance concrete with different corrosion rates, the corroded steel bars were simulated by changing the yield strength and elastic modulus of steel bars. The finite element software ABAQUS was in used to establish a 3-dimensional solid plastic damage model for reinforced high performance concrete, and the whole process of pull-out test was simulated. The findings demonstrate that the steel bar’s stress is transferred from the loading end to the free end of the concrete specimen and continuously decreases. Concrete’s stress continuously declines as it spreads from the steel bar interface to the surrounding area. The stress value of concrete increases initially and then gradually decreases with an increase in corrosion rate, and the ultimate slip value continuously decreases.

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Effect of Corrosion on Bond Mechanism between Extremely Low-Strength Concrete and Plain Reinforcing Bars

Cited by 17 publications

References 20 publications

Corrosion-Effected Bond Behavior between PVA-Fiber-Reinforced Concrete and Steel Rebar under Chloride Environment

Corrosion-Effected Bond Behavior between PVA-Fiber-Reinforced Concrete and Steel Rebar under Chloride Environment

Study on the Bending and Joint Performances of Reinforced Concrete Beams Using High-Strength Rebars

Bonding Properties Between Corroded Steel Bars and High Performance Concrete

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