Experimental and Numerical Investigation of Bond-Slip Behavior of High-Strength Reinforced Concrete at Service Load

Dey, Alinda; Valiukas, Domas; Jakubovskis, Ronaldas; Соколов, А. А.; Kaklauskas, Gintaris

doi:10.3390/ma15010293

Cited by 9 publications

(11 citation statements)

References 29 publications

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“…The first RC chord, from Dey et al [6], is a 200 9 200 9 390 mm (Fig. 3a) instrumented with 21 strain gauges positioned in the core of the Ø20 embedded rebar.…”

Section: Assessed Models and Experimental Specimensmentioning

confidence: 99%

“…Fig. 3 Illustration of double pull-out specimens used for the application of validation tool a Dey et al [6], b Jakubovskis and Kaklauskas [34], c Bado et al [31], d Houde [20], (e) Eugenijus [35] protected by means of a thin one-component waterproof oxygen-free silicone rubber layer. This layering was found to be the most performant manner of bonding a DOFS to a rebar for concrete embedment [31].…”

Section: Assessed Models and Experimental Specimensmentioning

confidence: 99%

“…Differently so, modern research advocates for a different, experiment-based approach to serviceability analyses called the stress transfer approach (also referred to as partial interaction or discrete crack-based approach). Nowadays, such method is commonly considered as the most realistic depiction of the inner workings of RC structures such as its bond-slip mechanics, tension stiffening effect and crack development [4][5][6][7]. The model acknowledges the presence of a concrete-rebar bond resulting from frictional resistance, chemical adhesion and mechanical interlock between the two materials [4].…”

Section: Introductionmentioning

confidence: 99%

“…Crucially, double pull-out tests rely on the knowledge of the longitudinal strains in the embedded rebar/ s, thus the need to deploy strain monitoring tools on them. To this day, said deployment has been achieved by means of several strain monitoring tools, the most common of which are electrical strain gauges [6,13,20,21]. Despite the ensuing accuracy of the strain measurements, the deployment of these sensors requires transversally sawing the rebar, incising grooves, gluing and soldering.…”

Section: Introductionmentioning

confidence: 99%

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Validation of reinforced concrete bond stress–slip models through an analytical strain distribution comparison

2022

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The bond and slip between concrete and the reinforcement bars, cover a key role in the inter-material force transfer of Reinforced Concrete (RC) structures. In light of the lack of tools able to thoroughly inspect the inner workings of RC structures and to extract reliable bond stress values, modern bond stress–slip (Bond–slip) models are often inaccurate and in contradiction with each other. Considering the recent surge of novel hyper-performant strain sampling tools (Distributed Sensing for example), their application for the creation of novel and physically accurate Bond–slip models is just a matter of time. This being said, one of the main reasons behind the modern coexistence of multiple inaccurate and at times contradictory Bond–slip models is the absence of a tool that has allowed researchers to rapidly corroborate and calibrate their newly created models. To this end, the present article proposes such a Bond–slip validation tool for RC elements. This one is designed to extract reinforcement strain profiles at any given load level on the grounds of a specific bond–slip law and geometrical inputs. Said profile is then compared against an experimentally extracted one based on specimens with identical geometrical features. The performance of the validation tool is demonstrated through an application to six existing bond–slip models. Granted the proposal of validation tools is paramount for the future of the discussion on bond–slip modelling, stress-transfer analyses and serviceability of RC structures, the here proposed validation tool is a first significant step in that direction.

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“…The first RC chord, from Dey et al [6], is a 200 9 200 9 390 mm (Fig. 3a) instrumented with 21 strain gauges positioned in the core of the Ø20 embedded rebar.…”

Section: Assessed Models and Experimental Specimensmentioning

confidence: 99%

Section: Assessed Models and Experimental Specimensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Validation of reinforced concrete bond stress–slip models through an analytical strain distribution comparison

2022

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“…Curved through-holes are opened through the webs, mainly for the arrangement of horizontal reinforcement. However, the bond–slip performance of M-section steel in concrete is quite different from the currently studied steel bar in concrete [ 8 , 9 , 10 , 11 , 12 , 13 ], steel-reinforced concrete [ 14 , 15 , 16 ], steel-reinforced recycled concrete [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ], steel-reinforced engineered cementitious composites [ 26 , 27 , 28 ], and steel plate in concrete [ 29 , 30 , 31 , 32 , 33 ]. Therefore, to achieve the popularization of M-section steel-skeleton shear walls, it is very necessary to carry out further research on the interfacial bonding behavior between M-section steel and concrete.…”

Section: Introductionmentioning

confidence: 99%

Study of Bond–Slip Behavior and Constitutive Model of a New M-Section Steel-Skeleton Concrete

Wei

Yang

et al. 2022

Materials

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In this study, the bond–slip behavior between a new type of M-section steel skeleton (i.e., M-section steel) applied in assembled shear wall structures and concrete was investigated. First, push-out tests were conducted on 21 M-section steel–concrete (MSSC) specimens, wherein the effects of the concrete cover, concrete strength, and anchorage length on the bond strength between the M-section steel and concrete were considered. Further, the crack patterns, strain distribution of M-section steel, and bond–slip curves of the MSSC specimens were investigated using conventional strain measurement and a non-contact optical three-dimensional deformation measurement system, Digital Image Correlation–3D (DIC-3D). The experimental results demonstrated that the bond–slip curves of the MSSC specimens were divided into four stages: the linear ascending, non-linear ascending, non-linear descending, and residual stages. The initial average bond strength was mainly affected by the concrete strength and anchorage length, whereas the concrete cover and anchorage length influenced the residual average bond strength , and the ultimate average bond strength was affected by the concrete strength, concrete cover, and anchorage length. Consequently, a bond–slip constitutive model of M-section steel and concrete was proposed based on the experimental results, and consistency was observed in comparison with the test results, which verified the applicability of the proposed model. Furthermore, to verify the rationality of the bond–slip constitutive model, a numerical simulation was performed, wherein the bond–slip curves, stress clouds, and interfacial bond damage process of the MSSC specimens were investigated. The numerical simulation results indicated that the bond–slip constitutive model could accurately predict the entire failure process of the MSSC specimens.

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Bond assessment between rebars embedded into a parent material using a single-function bond-slip model

Biscaia,

Carmo

2023

Construction and Building Materials

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Experimental and Numerical Investigation of Bond-Slip Behavior of High-Strength Reinforced Concrete at Service Load

Cited by 9 publications

References 29 publications

Validation of reinforced concrete bond stress–slip models through an analytical strain distribution comparison

Validation of reinforced concrete bond stress–slip models through an analytical strain distribution comparison

Study of Bond–Slip Behavior and Constitutive Model of a New M-Section Steel-Skeleton Concrete

Bond assessment between rebars embedded into a parent material using a single-function bond-slip model

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