Analysis of bondslip between concrete and steel bar in fire
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Analysis of bondslip between concrete and steel bar in fire .

Analysis of bond-slip between concrete and steel bar in ...

2016-1-1  This paper presents a robust model for predicting the bond-slip between the concrete and steel reinforced bar at elevated temperatures. The model is established based on a partly cracked thick-wall cylinder theory and the smeared cracking approach is adopted to consider the softening behaviour of concrete in tension.

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Analysis of bond-slip between concrete and steel bar in fire

2016-1-19  KEYWORDS: Bond-slip, concrete structures, fire, splitting failure. RESEARCH HIGHLIGHTS: Develop a robust model for predicting the bond-slip between the concrete and steel reinforced bar at elevated temperatures. Incorporate the bond-slip model into the Vulcan program for 3D analysis of reinforced concrete structures in fire.

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Analysis of bond-slip between concrete and steel bar in ...

By Jamal Khalaf, Zhaohui Huang, Mizi Fan, Diederichs, Pothisiri, Huanzi, Tepfers, Wang, Nielsen, Huang, Bazant, Huang, Timoshenko, Pantazopoulou, Aslani, Pothisiri ...

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3D FINITE ELEMENT MODELLING OF BOND-SLIP

2009-11-6  The behaviour of the concrete-steel interface must be described from stress-strain laws. Many constitutive relationships are presented in the literature. In this element, the contact surface between the steel bar and the concrete in the immediate vicinity of the steel bar is modeled by a bond stress-slip law which

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Analysis of the bond behaviour between prestressed strands ...

2016-12-15  Hence, for fire resistance design of PC structural member it is unconservative to assume fully bounded between concrete and steel strand. 6. Conclusions. In this paper a new analytical model has been developed to predict the bond stress-slip between strands and concrete for prestressed concrete members under fire conditions.

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Bond-Slip Behavior between Stainless Steel Rebars and Concrete

Maintenance of reinforced concrete structures is a prevailing topic, especially with regard to lifeline structures and bridges, many of which are now designed with a service life beyond 100 years. Reinforcement made of ordinary (carbon) steel may corrode in aggressive environments. Stainless steel, being much more resistant to corrosion, is a valid solution to facilitate the protection of the ...

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Bond Slip Study Between Concrete and Steel Interface Using ...

Bond stress-slip behavior between the reinforcing steel and the concrete is one of the basic properties which influences the performance of the structure at the serviceability as well as at the ultimate limit state. However, this behavior changes with the exposure to elevated temperatures.

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Modeling of Interaction Between Steel and Concrete in ...

2020-1-3  consequently the transverse steel bars and the bond slip between the bars and concrete in the transverse direction cannot be modeled . Therefore, the 3(Kim et al. 2000)-D analysis was performed to validate the accuracy of the 2-D model and to include the modeling of transverse bars in CRCP.

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Bond slip model for the simulation of reinforced concrete ...

2012-6-1  In reinforced concrete structures, the relation between steel and concrete is governed by a bond stress distributed along the interface. The evolution of this bond stress is generally studied in the form of a bond stress-relative displacement (slip between steel and concrete) curve (Fig. 4).

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Evaluation of bond performance of corroded steel bars in ...

2019-11-1  The pull-out tests were conducted to determine the bond performance between corroded steel bars and concrete after the specimens were cooled down to room temperature. The specimens were loaded into an electro-hydraulic servo universal testing machine with a capacity of 1000 kN, as depicted in Fig. 3. The relative displacements between the rebar ...

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Experimental Study on Bond-Slip between Steel Bar and ...

By a static and repeated pull-out experiment between steel bar and recycled aggregate concrete, and bond-slip curves between recycled concrete with different recycled coarse aggregate(RCA) replacement percentages were recorded. Based on the analysis of the experimental results, replacement percentages of recycled concrete, cover thickness, anchorage length, concrete strength and loading method ...

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Bond between Ultra-High Performance Concrete and

2016-8-3  All reinforced concrete structures rely on the bond relationship between the concrete and steel reinforcement bars. Studies on the bond between regular concretes, high strength concretes, other cementitious materials and steel bars have been available for some time now [e.g. Slater, 1920, Gilkey, 1956, ACI 2003].

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Modeling of Interaction Between Steel and Concrete in ...

2020-1-3  consequently the transverse steel bars and the bond slip between the bars and concrete in the transverse direction cannot be modeled . Therefore, the 3(Kim et al. 2000)-D analysis was performed to validate the accuracy of the 2-D model and to include the modeling of transverse bars in CRCP.

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Experimental Analysis of Bond between Corroded Steel Bar ...

Based on the results of electrochemical corrosion and pullout tests, the bond properties between concrete and a steel bar under unconfined and TRC–confined conditions were comparatively analyzed in terms of the corrosion-induced cracking, failure mode, bond-slip curve, bond strength, and bond

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Bond behaviour between reinforcing steel and concrete ...

2016-10-11  For activation of the bond mechanism, relative displacements (slip) between steel and surrounding concrete are required. Essentially, bond action is achieved by mechanical interlocking of the steel ribs and the surrounding concrete. With initiating relative displacement, the ribs start to penetrate into the mortar matrix.

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Numerical simulation of bond-slip between HSC and steel bar

Request PDF Numerical simulation of bond-slip between HSC and steel bar Bond-slip relationship is very complex issue in the non-linear finite element analysis of beams. Three model beams with ...

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Experimental Study and Bond Slip Analysis on Mechanical ...

2021-6-28  Experimental Study and Bond Slip Analysis on Mechanical Properties of Half Grout Sleeve Splicing of Rebars after High Temperature. In order to avoid failure of the half grout sleeve splice of rebars in prefabricated concrete structures after fire and serious consequences,27 14 mm-half grout sleeve splicing specimens of rebars were ...

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Fractal Analysis on Bond-Slip Behavior between Steel Shape ...

Based on the experimental study of pull-out specimens on bond-slip behaviors between shaped steel and concrete in SRC (Steel Reinforced Concrete Structures), the graphic of the whole damage process are obtained. The crack propagation of concrete is fractal analyzed to calculate the fractal dimension. Relationships between fractal dimension and bond-slip behaviors of SRC are discussed.

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The bond behaviour between concrete and corroded ...

2020-10-13  interaction between concrete and reinforcing steel bar, which enables the force transfer and the compatibility of deformation between ing reinforc steel bar and the surrounding concrete. PIt is made up of three components: chemical adhesion, friction and mechanical interaction. For deformed steel bars, bond depends primarily on the mechanical

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Finite element modelling of bond–slip at anchorages of ...

2019-10-4  The bond mechanism plays a decisive role when anchorage failure in a reinforced concrete (RC) member occurs. A refined model of bond–slip is therefore needed to analyse RC members by analytical or finite element (FE) modelling where the anchorage of reinforcement is critical, such as at a lapped-splice or in any situation where the strength of a bar is required to be developed to achieve its ...

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Numerical Simulation of the Bond Behavior between Concrete ...

Numerical Simulation of the Bond Behavior between Concrete and Steel Reinforcing Bars in Specialty Concrete ... Steel-Concrete Bond Analysis with Nonlocal Continuous Damage”, Journal of Structural Engineering, 117(3), 862-882, 1991. [14] B.M. Luccioni, D.E. Lopez, R.F. Danesi, “Bond-Slip in Reinforced Concrete Element”, Journal of ...

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Modeling of Interaction Between Steel and Concrete in ...

2020-1-3  consequently the transverse steel bars and the bond slip between the bars and concrete in the transverse direction cannot be modeled . Therefore, the 3(Kim et al. 2000)-D analysis was performed to validate the accuracy of the 2-D model and to include the modeling of transverse bars in CRCP.

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Experimental Study and Bond Slip Analysis on Mechanical ...

2021-6-28  Experimental Study and Bond Slip Analysis on Mechanical Properties of Half Grout Sleeve Splicing of Rebars after High Temperature. In order to avoid failure of the half grout sleeve splice of rebars in prefabricated concrete structures after fire and serious consequences,27 14 mm-half grout sleeve splicing specimens of rebars were ...

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Bond stress distribution analysis between steel bar and ...

Abstract The bond stress distribution between steel bar and steel fiber reinforced concrete (SFRC) with different volume fractions were analyzed by the pullout test on the specimens with local bond, in which the high strength steel bar with inner strain gauge was embedded in SFRC. A new prediction model for bond stress was proposed, termed the midpoint stress interpolation method.

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Fractal Analysis on Bond-Slip Behavior between Steel Shape ...

Based on the experimental study of pull-out specimens on bond-slip behaviors between shaped steel and concrete in SRC (Steel Reinforced Concrete Structures), the graphic of the whole damage process are obtained. The crack propagation of concrete is fractal analyzed to calculate the fractal dimension. Relationships between fractal dimension and bond-slip behaviors of SRC are discussed.

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Bond-Slip Model for Detailed Finite-Element Analysis of ...

2013-10-25  A new interface model to simulate the bond-slip behavior of reinforcing bars is presented. The model adopts a semiempirical law to predict the bond stress-versus-slip relations of bars, accounting for the bond deterioration caused by cyclic slip reversals, the tensile yielding of the bars, and the splitting of concrete.

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Bond Stress-slip Behaviour Of Concrete And Steel Under ...

The results indicate a bond stress dependence on the loading rate although the scattering of the results is quite high. The experimentally determined dynamic increase factor (DIF) for concrete-steel bond stress is around 1.5 which is a value comparable to other authors. Keywords. bond stress-slip relation, bond test, DIF, impact, push-in strain ...

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How to find the bond strength between concrete and steel ...

2021-1-5  The study on bond properties between prestressing steel and bitumen-based materials is of importance for post-tensioning structures grouted with bitumen-based materials. A bond model is established.

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Three-Dimensional Finite-Element Analysis of Bond-Slip ...

The model simulates the bond-slip behavior between three-dimensional crescent ribbed bars and concrete. A total of 180 spring elements were created between the ribbed bar and concrete. This model simulates the gradational deformation from the loading end to the free end of the ribbed bar as closely as possible to the real situation.

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Finite element modelling of steel/concrete bond for ...

2017-1-31  products or the lubricant effect at the steel/concrete interface as the corrosion by-products accumulate. The current research aims at investigating corrosion-induced deterioration of bond between steel and concrete through finite element (FE) analysis of

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