Analytic solution for the bond stress-slip relationship between rebar and concrete

Gao, Xuejuan; Li, Naikun; Ren, Xiaodan

doi:10.1016/j.conbuildmat.2018.11.206

Cited by 47 publications

(6 citation statements)

References 23 publications

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“…The results show that the concrete strength, anchorage length, stirrup ratio and cover thickness have a positive effect on bond strength, while only the diameter of rebar has a negative effect. This conclusion has also been verified in previous studies (Léon et al, 2019; Zhe et al, 2021; Gao et al, 2019). In addition, the quantitative effect of changes in parameters on bond strength is further described as follows.…”

Section: Discussionsupporting

confidence: 90%

Experimental study and reliability-based analyses on the bond performance of high-strength and corrosion-resistant rebar in concrete

Huang

Yue

Liu

et al. 2022

Advances in Structural Engineering

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In this paper, the influence of concrete strength, diameter, cover thickness, anchorage length, and stirrups ratio on the bonding performance of the HSCR rebar in concrete are experimentally investigated. A nonlinear FE model for simulating the bond performance between HSCR and concrete is established and validated, and the influencing parameters are parametrically investigated. Moreover, the applicability of the ultimate bond strength model for HSCR-concrete is comparatively discussed, and a new model is proposed and validated to give relatively accurate prediction. Based on the proposed model, the anchorage reliability analysis is conducted, the influencing parameters as well as their variation on the reliability of bond strength are discussed, and the reliable anchorage length is recommended.

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Section: Discussionsupporting

confidence: 90%

Experimental study and reliability-based analyses on the bond performance of high-strength and corrosion-resistant rebar in concrete

Huang

Yue

Liu

et al. 2022

Advances in Structural Engineering

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“…The bond stressslip constitutive model is obtained based on the regression analysis of many test data. However, the bond stress-slip curves are also quite different due to the complex bonding mechanism and differences in test conditions [34][35][36][37][38][39][40]. According to the author's knowledge, Marchand [13], Yoo [11], and Sturm and Visintin [15] studied the bond-slip relationship between rebar and UHPC.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Investigation of Bond Behavior of Deformed Steel Bar and Ultra-High Performance Concrete

Liang

Yuan

2022

Buildings

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Ultra-high performance concrete (UHPC) has been demonstrated to be a realistic alternative to less maintenance and significantly longer service life due to its better mechanical properties and low permeability. The bond performance of the deformed steel bar embedded in UHPC is critically important for the safety of the UHPC structures. This paper conducted an experimental investigation on the bond behavior of deformed steel bars and UHPC. The impacts of loading method, UHPC strength, steel fiber type and content, rebar diameter, and cover thickness were studied. The testing results revealed that the specimens failed in three modes: pull-out, splitting + pull-out, and cone failure. The main factors affecting the bond strength are UHPC compressive strength, cover thickness, and fiber characteristics. The peak slip of rebar-UHPC increases with cover thickness and rebar diameter. Finally, an analytical model of the bond stress-slip relationship between the UHPC and deformed steel bar is obtained, which is in suitable agreement with the test results.

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“…They were determined using the analysis of graphs shown in Figure 2. Stress f-strain ε relationship for six types of rebars tested: smooth and ribbed, galvanized, and black steel, with a diameter ϕ8 mm and ϕ16 mm, composed of two steel grades; solid lines-the rebars tested after pulling out the specimens from concrete (1p, 4p, 7p, 10p, 13p, 16p), dashed lines-the rebars that were not used in the test elements (2,3,5,6,8,9,11,12,14,15,17,18).…”

Section: Methodsmentioning

confidence: 99%

“…The bond strength of reinforcing steel to concrete is a key element that determines the desired behaviour of a reinforced concrete composite. The effects observed at the interface between steel and concrete have been generally thoroughly investigated and clearly described [ 1 , 2 , 3 , 4 , 5 ]. However, introducing a galvanized concrete element to the reinforcement causes some disturbances at the metal-concrete interface.…”

Section: Introductionmentioning

confidence: 99%

An 18-Month Analysis of Bond Strength of Hot-Dip Galvanized Reinforcing Steel B500SP and S235JR+AR to Chloride Contaminated Concrete

2021

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This article describes the comparative analysis of tests on bond strength of hot-dip galvanized and black steel to concrete with and without chlorides. The bond effect was evaluated with six research methods: strength, electrochemical (measurements of potential, EIS and LPR), optical, and 3D scanning. The tests were conducted within a long period of 18 months on 48 test elements reinforced with smooth rebars ϕ8 mm from steel grade S235JR+AR and ribbed rebars ϕ8 mm and ϕ16 mm from steel grade B500SP. The main strength tests on the reinforcement bond to concrete were used to compare forces pulling out galvanized and black steel rebars from concrete. This comparative analysis was performed after 28, 180, and 540 days from the preparation of the elements. The electrochemical tests were performed to evaluate corrosion of steel rebars in concrete, particularly in chloride contaminated concrete. The behaviour of concrete elements while pulling out the rebar was observed using the system of digital cameras during the optical tests. As regards 3D scanning of ribbed rebars ϕ8 mm and ϕ16 mm, this method allowed the detailed identification of their complex geometry in terms of determining the polarization area to evaluate the corrosion rate of reinforcement in concrete. The test results indicated that the presence of zinc coating on rebars had an impact on the parameters of anchorage. In the case of ribbed rebars of 16 mm in diameter, the maximum values of adhesive stress and bond stiffness were reduced over time when compared to black steel rebars. Moreover, it was noticed that the stiffness of rebar anchorage in chloride contaminated concrete was considerably higher than in concrete without chlorides.

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Analytic solution for the bond stress-slip relationship between rebar and concrete

Cited by 47 publications

References 23 publications

Experimental study and reliability-based analyses on the bond performance of high-strength and corrosion-resistant rebar in concrete

Experimental study and reliability-based analyses on the bond performance of high-strength and corrosion-resistant rebar in concrete

Experimental and Analytical Investigation of Bond Behavior of Deformed Steel Bar and Ultra-High Performance Concrete

An 18-Month Analysis of Bond Strength of Hot-Dip Galvanized Reinforcing Steel B500SP and S235JR+AR to Chloride Contaminated Concrete

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