Strain rate effect on interfacial bond behaviour between BFRP sheets and steel fibre reinforced concrete

Yuan, Cheng; Chen, Wensu; Pham, Thanh-Hang; Hao, Hong; Cui, Jian; Shi, Yanchao

doi:10.1016/j.compositesb.2019.107032

Cited by 40 publications

(12 citation statements)

References 52 publications

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“…Napoli 11 found that steel fiber textiles as reinforcing materials can significantly increase the flexural strength of RC slabs/beams, with the number of layers and density of steel fiber textiles being the main factors affecting their flexural performance. Yuan 14 conducted experimental research and numerical simulation on the bond strength of masonry components reinforced with STRM composite materials. The results indicated that the interfacial bond strength of masonry components reinforced with STRM composite materials depends on the density of steel fiber textiles, the mechanical properties of the mortar matrix, and the bonding length.…”

Section: ■ Introductionmentioning

confidence: 99%

Interface Bonding Properties and Mechanism of Steel Fiber and Hot Melt Adhesive via Interface Design Engineering

Zhang,

Liu,

Zhang

et al. 2024

Langmuir

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Steel fiber textile, which is composed of steel fibers and glass fibers, has a support layer impregnated with hot melt adhesive (HMA). During long-term service, the bonding force between the steel fiber/HMA system interfaces is poor. In order to improve the bond strength and durability of the interface, this paper introduced sandblasting, acid-etching, and phosphating treatments on the surface of the steel fibers. Also, the effects of these three pretreatment methods on the bond strength of the steel fiber/HMA interface were investigated. The results indicate that the interfacial bond strength of composites made from steel fibers is improved via surface treatment. Under a hydrothermal and simulated concrete pore solution environment, the durability of the steel fiber/HMA interface after sandblasting and acid-etching pretreatment is not as good as that after phosphating pretreatment. The mechanical properties of the phosphating/HMA composite were maintained at 4.56 and 2.24 times compared to those of the untreated/HMA composite, respectively. This is because the pinning effect formed by the phosphating film on the surface of steel fibers at the interface of steel fiber/HMA can serve as a physical barrier against corrosion, preventing the invasion of chloride ions and water vapor and improving the durability of the interface.

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Section: ■ Introductionmentioning

confidence: 99%

Interface Bonding Properties and Mechanism of Steel Fiber and Hot Melt Adhesive via Interface Design Engineering

Zhang,

Liu,

Zhang

et al. 2024

Langmuir

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“…The masonry structure is likely to be subjected to dynamic loads such as earthquakes, explosions and impacts. Experimental studies of the FRP-to-substrate interface show that the dynamic interfacial strength is significantly higher than that of static [ 10 , 11 , 12 , 13 ], and the dynamic bond–slip relationship is naturally different from that of static [ 14 , 15 , 16 , 17 , 18 ]. An accurate bond–slip relationship can be used for strength calculations of FRP-reinforced structures, helping to design safer and more economical FRP-reinforced solutions.…”

Section: Introductionmentioning

confidence: 99%

The Bond-Slip Relationship at FRP-to-Brick Interfaces under Dynamic Loading

Zhang

Yang

2021

Materials

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Interface debonding between fiber reinforced polymers (FPR) and substrates is the principal failure mode for FRP-reinforced structure. To understand the bond–slip relationship at FRP-to-brick interfaces under dynamic loading, the influences of the dynamic enhancement of material performance on the bond–slip curve were studied. Single-lap shear tests under two different loading rates were performed, and the slip distribution curves at different loading stages were fitted to derive the bond–slip relationship. Then a numerical model considering the strain rate effects on materials was built and verified with test results. Further, the influences of brick strength, FRP stiffness and slip rate on the bond–slip relationship were investigated numerically. The research results show that FRP stiffness mainly influences the shape of the bond–slip curve, while brick strength mainly influences the amplitude of the bond–slip curve. The variations of the bond–slip relationship under dynamic loading, i.e., under different slip rates, are mainly caused by the dynamic enhancement of brick strength, and also by the dynamic enhancement of FRP stiffness, especially within a specific slip rate range. The proposed empirical formula considering dynamic FRP stiffness and dynamic brick strength can be used to predict the bond–slip relationship at the FRP-to-brick interface under dynamic loading.

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Section: Introductionmentioning

confidence: 99%

“…89 In addition, it was identified that dynamic interfacial bond behavior in the composite was related to strain rate and its fiber volume fractions and bond quality between fiber and adherent. 90 Pankow et al reported that 3D orthogonal architecture provided a higher strength, whereas 3D angle interlock provided more energy absorption and prevented mode-II crack propagation probably due to fiber interlacement patterns. These results were obtained by using the finite element-based mechanical model considering discrete cohesive zone elements.…”

Section: Introductionmentioning

confidence: 99%

Mode-II fracture of nanostitched para-aramid/phenolic nanoprepreg composites by end-notched flexure

Bilişik

Erdogan

Sapanci

et al. 2020

Journal of Composite Materials

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The mode-II interlaminar fracture toughness considering the end-notched flexure method of nanostitched para-aramid/phenolic composite structures was investigated. The fracture toughness (GIIC) of the nanostitched and stitched composites exhibited a slight increase as compared to the pristine sample. Hence, the nanostitching enhanced the fracture toughness of the para-aramid/phenolic composite structures. Although the type of stitch fiber was not effective, the fabric interlacement frequency, notably prepreg Twaron nanostitched yarn and basket nanoprepreg biaxial interlaced fabric was of critical importance. The principle mechanism for raising the GIIC in the nanostitched composite structure was the interlayer resin fracture particularly as a form of slight shear hackle marks. Cracks grew around the inter- and intrayarn boundaries where the resin was fractured half way around each yarn cross-section. This is called a “zigzag crack path,” and microcracks moved to the through-the-thickness of the composite where nanostitching arrested the crack growth and suppressed delamination in the stitching zone. At the blunt crack tip, carbon nanotubes in the phenolic resin and multiple filament bundles probably diminished the stress clustering via friction/debonding/pull-out/sliding or stick-slip. Thus, nanostitched para-aramid/phenolic composite structures demonstrated better damage tolerance behavior considering the neat structure.

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Strain rate effect on interfacial bond behaviour between BFRP sheets and steel fibre reinforced concrete

Cited by 40 publications

References 52 publications

Interface Bonding Properties and Mechanism of Steel Fiber and Hot Melt Adhesive via Interface Design Engineering

Interface Bonding Properties and Mechanism of Steel Fiber and Hot Melt Adhesive via Interface Design Engineering

The Bond-Slip Relationship at FRP-to-Brick Interfaces under Dynamic Loading

Mode-II fracture of nanostitched para-aramid/phenolic nanoprepreg composites by end-notched flexure

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