Bond behavior and interface modeling of reinforced high-performance fiber-reinforced cementitious composites

Bandelt, Matthew J.; Frank, Timothy E.; Lepech, Michael D.; Billington, Sarah L.

doi:10.1016/j.cemconcomp.2017.07.017

Cited by 65 publications

(14 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference between the widest and narrowest crack in the reinforced concrete specimens was roughly one order of magnitude at 6.1% drift. [17,22], cracking in both reinforced ECC specimens consisted of horizontal flexural cracks with no diagonal cracks. Table 5 presents various cracking observations from the two reinforced ECC specimens.…”

Section: Crackingmentioning

confidence: 89%

A Comparison of Reinforced Concrete and Reinforced HPFRCC Beam Response to Different Cyclic Deformation Histories

Frank¹,

Lepech²,

Billington³

2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

View full text Add to dashboard Cite

High performance fiber-reinforced cement composites (HPFRCCs) have been designed to exhibit high tensile strength and ductility compared to traditional concrete. HPFRCCs have also shown improved damage tolerance in compression. When reinforced with steel, HPFRCC components have been proposed for enhanced seismic resistance in structural applications. Because of the uncertainty associated with ground motions, determining an appropriate cyclic deformation history for seismic testing of structural components is a challenge. Different cyclic deformation histories have resulted in different cracking patterns in previous HPFRCC component tests. Several different cyclic loading protocols have been used in previous studies, but the deformation history itself has rarely been treated as a test variable. Two reinforced HPFRCC beams and two reference specimens made of reinforced concrete were tested under two different cyclic loading protocols. Cracking patterns, strain in the steel reinforcement, and hysteresis behavior were monitored through failure. The reinforced HPFRCC beams responded differently to different deformation histories than the reinforced concrete beams in terms of ductility and the amount of energy dissipated. Results from this study will contribute to a better understanding of reinforced HPFRCC component behavior under various cyclic deformation histories. 1 INTRODUCTION 1.1 HPFRCCs High performance fiber-reinforced cement composites (HPFRCCs) are a class of cement based materials that has been developed and studied for over three decades. HPFRCCs have many similar constituents to traditional concrete, but also contain short, randomly distributed fibers. The definitive characteristic of HPFRCC material behavior that sets it apart from

show abstract

Section: Crackingmentioning

confidence: 89%

A Comparison of Reinforced Concrete and Reinforced HPFRCC Beam Response to Different Cyclic Deformation Histories

Frank¹,

Lepech²,

Billington³

2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

View full text Add to dashboard Cite

show abstract

“…In numerical modeling, the balance between efficiency and accuracy should be determined in a way to best serve the purpose of modeling. There have been a great number of attempts to model the bond between steel rebar and its covering material, which can take into consideration many factors including frictional bond [11], mechanical interlocking [7,11,13], constitutive property and even inhomogeneity of the covering material [7,13], etc. However, as more details are added to the model, more input data is needed which is mostly determined through experiment (e.g.…”

Section: Numerical Modelingmentioning

confidence: 99%

“…Another method takes into consideration the bending effect occurred in structures (e.g. beams) [7,8], but it involves complicated test setup and measurement. While in [9,10], the specimens adopted was a simple block with two rebars embedded in both sides and tested under direct tension.…”

Section: Introductionmentioning

confidence: 99%

“…In [12], the bond between deformed rebar and concrete was simplified into a contact problem, but the study was only able to model the pre-peak behavior. In [7,13], the geometry of the ribs was considered in the models but was simplified into a ring-shape profile. Such simplification is not very reasonable as the transverse area of the ribs should be distributed along the rebar, instead of concentrated in a certain section.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study and numerical modeling on bond between steel reinforcements and strain-hardening cementitious composites (SHCC)

Chen¹,

Leung²

2019

Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures

View full text Add to dashboard Cite

Strain-hardening cementitious composites (SHCC) are a type of pseudo-ductile material characterized by its tensile strain-hardening behavior, high tensile ductility and crack control capability. In many structural applications of SHCC, especially in repair work and joining of precast elements, good bonding with steel reinforcements is required to guarantee the stress transfer. Thus, the bond property between steel rebars and SHCC is an important issue to investigate. This paper presents the experimental testing and numerical modeling of the bond between deformed steel rebars and high strength SHCC. Bond test in direct tension is performed on specimens made of rebars and SHCC or concrete cover. The effects of materials, cover thicknesses and rebar sizes on the bond behavior are discussed. For the numerical simulation, instead of using a detailed model that involves complex geometry and comprehensive bond mechanisms, a simplified finite element model is adopted, which integrates all non-linear behaviors into spring elements linking SHCC and steel rebar elements. The spring behavior is back-fitted according to the experimentally determined load-displacement relation. To verify the effectiveness of the model, the modeling and experimental results for different specimen configurations are compared. The study reveals that the bond property between steel rebars and SHCC is superior to that between steel rebars and normal concrete, and that the cover thickness has a great influence on the bond strength. Further, the simple numerical model provides an effective method to extract the bond stress-slip behavior so that it can be used to determine the bond length for more general cases.

show abstract

“…Various experimental tests [3][4][5] have been conducted to determine the bond strength of steel reinforcement embedded in UHPFRC, among which direct pull out tests [6][7][8][9][10] and lap splice tests 4,11 were widely used in literatures. Marchand et al 9 experimentally investigated the bond behavior between steel reinforcement and UHPFRC by using direct pull out tests.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of bond‐slip behavior of reinforcement in ultra‐high‐performance fiber‐reinforced concrete

Wang

Shi

Wang

et al. 2021

Structural Concrete

View full text Add to dashboard Cite

Bond strength of steel reinforcement embedded in ultra-high-performance fiber-reinforced concrete (UHPFRC) plays a vital role in the post-cracking behavior of reinforced UHPFRC members in flexure or tension. This paper presents an analytical study on the bond strength of steel reinforcement in UHPFRC. Three different bond-slip models, namely the modified fib model, Marchand model and the proposed model are compared in the analytical method and explicit equations are also proposed. Comparisons with test data suggest that the proposed model and explicit equations can evaluate the bondslip behavior of reinforcement with good accuracy. Marchand model shows similar predictions of bond-slip behavior to the proposed model at different load levels, whereas the modified fib model is accurate only when the reinforcement nearly yields in tension. The embedment length required for embedded reinforcement to develop its yield and ultimate strengths can also be calculated from the analytical method and explicit equations.

show abstract

Bond behavior and interface modeling of reinforced high-performance fiber-reinforced cementitious composites

Cited by 65 publications

References 18 publications

A Comparison of Reinforced Concrete and Reinforced HPFRCC Beam Response to Different Cyclic Deformation Histories

A Comparison of Reinforced Concrete and Reinforced HPFRCC Beam Response to Different Cyclic Deformation Histories

Experimental study and numerical modeling on bond between steel reinforcements and strain-hardening cementitious composites (SHCC)

Evaluation of bond‐slip behavior of reinforcement in ultra‐high‐performance fiber‐reinforced concrete

Contact Info

Product

Resources

About