Prediction of interfacial fracture between concrete and fiber reinforced polymer (FRP) by using cohesive zone modeling

Park, Kyoungsoo; Ha, Kyungsu; Choi, Habeun; Lee, Changjoon

doi:10.1016/j.cemconcomp.2015.07.008

Cited by 25 publications

(6 citation statements)

References 42 publications

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“…The bond behavior can be modeled by cohesive elements (Qiao and Chen 2008;Lu and Xu 2013;Chang et al 2017;Xu et al 2018;Park et al 2015) or surface-based cohesive behavior (Chen et al 2011;Henriques et al 2013Henriques et al , 2015Yang et al 2017) using traction-separation law in Abaqus. Because the interface thickness is negligibly small, the interface bond behavior between rockbolt (concrete) and cement mortar was modeled by the surface based cohesive behavior in order to reduce the calculation time.…”

Section: Spectrum Analysismentioning

confidence: 99%

Experimental and numerical evaluation on debonding of fully grouted rockbolt under pull-out loading

Zhu

Niu

2022

Int J Coal Sci Technol

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The axial loading in rockbolts changes due to stress redistribution and rheology in the country rock mass. Such a change may lead to debonding at rockbolt to grout interface or rupture of the rockbolt. In this study, based on laboratory experiments, ultrasonic guided wave propagation in fully grouted rockbolt under different pull-out loads was investigated in order to examine the resultant debonding of rockbolt. The signals obtained from the ultrasonic monitoring during the pull-out test were processed using wavelet multi-scale analysis and frequency spectrum analysis, the signal amplitude and the amplitude ratio (Q) of low frequency to high frequency were defined to quantify the debonding of rockbolt. In addition to the laboratory test, numerical simulation on the effect of the embedment lengths on ultrasonic guided wave propagation in rockbolt was conducted by using a damage-based model, and the debonding between rockbolt and cement mortar was numerically examined. It was confirmed that the ultrasonic guided wave propagation in rockbolt was very sensitive to the debonding because of pull-out load, therefore, the critical bond length could be calculated based on the propagation of guided wave in the grouted rockbolt. In time domain, the signal amplitude in rockbolt increased with pull-out load from 0 to 100 kN until the completely debonding, thus quantifying the debonding under the different pull-out loads. In the frequency domain, as the Q value increased, the debonding length of rockbolt decreased exponentially. The numerical results confirmed that the guided wave propagation in the fully grouted rockbolt was effective in detecting and quantifying the debonding of rockbolt under pull-out load.

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Section: Spectrum Analysismentioning

confidence: 99%

Experimental and numerical evaluation on debonding of fully grouted rockbolt under pull-out loading

Zhu

Niu

2022

Int J Coal Sci Technol

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“…Note that Equation 2 was established for plain concrete. In the present study, we assume that the relationship holds for repaired concrete as well, based on empirical observations made in [25], in which the elastic modulus of repaired concrete cylinders was estimated through compressive strength tests.…”

Section: Uniaxial Compression Testsmentioning

confidence: 99%

Finite Element model of concrete repaired by High Molecular Weight Methacrylate (HMWM)

Gao

Wang

et al. 2021

Engineering Structures

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“…The material containing SiO 2 reacts with CH to form C-S-H gel. The CH content in cement is reduced, the CH crystal size is refined, and the C-S-H content is increased, effectively improving the properties of cement-based composites (Li et al, 2021;Rico et al,2017;Ahmad et al, 1995;Park et al, 2015;Nakaba et al, 2001). The main reason for crack formation is the random orientation of fibres and concrete in the cement matrix.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance of Hybrid Graphene Nanoplates, Fly-Ash, Cement, Silica, and Sand Particles Filled Cross-Ply Carbon Fibre Woven Fabric Reinforced Epoxy Polymer Composites Beam and Column

Quadflieg¹,

Srivastava²,

Gries³

et al. 2023

JMSR

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The main goal of this study is to reduce the brittleness of a fibre-reinforced cement base structure when exposed to the effects of graphene nanoplates, fly ash, silica, sand, and cement fillers to better understand the effect of hybrid nano/micro particle fillers on the mechanical performance of cross-ply carbon fibre reinforced epoxy resin composites. A three-point bending test through the width was used to measure flexural strength. The impact tests Izod at low impact velocity and Charpy through the thickness were used to determine the dynamic fracture strengths of pre-cracked and non-cracked composite samples. Also, the compressive test method was used to measure the compressive strength of hybrid particles and short glass fibre-reinforced epoxy resin composite square and circular columns. The results show compressive strength and flexural strength. Izod impact energy, Charpy impact energy, and dynamic fracture toughness of hybrid nano/microparticle-filled fibre composites have higher values than virgin fibre composites due to the influence of graphene nanoparticles and perfect interface bonding between two dissimilar molecules of nano and microparticles, which improve the fracture toughness and absorb impact energy. Overall, the results indicate that molecules of nano/microparticle-filled carbon fibre and glass fibre-reinforced epoxy resin composites can be used in aggressive environments because of the improved mechanical properties in comparison to the virgin fibre composites. In addition, SEM micrographs clearly indicate that nano- and microparticles are resistant crack propagation and deboned of matrix fibres.

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Prediction of interfacial fracture between concrete and fiber reinforced polymer (FRP) by using cohesive zone modeling

Cited by 25 publications

References 42 publications

Experimental and numerical evaluation on debonding of fully grouted rockbolt under pull-out loading

Experimental and numerical evaluation on debonding of fully grouted rockbolt under pull-out loading

Finite Element model of concrete repaired by High Molecular Weight Methacrylate (HMWM)

Mechanical Performance of Hybrid Graphene Nanoplates, Fly-Ash, Cement, Silica, and Sand Particles Filled Cross-Ply Carbon Fibre Woven Fabric Reinforced Epoxy Polymer Composites Beam and Column

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