Microstructural characteristics and their impact on mechanical properties of steel-PVA fiber reinforced concrete

Liu, Fangyu; Xu, Ke; Ding, Wenqi; Qiao, Yafei; Wang, Linbing

doi:10.1016/j.cemconcomp.2021.104196

Cited by 68 publications

(15 citation statements)

References 51 publications

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“…In order to verify the rationality of the above design formula, the test data of seven steel fiber-reinforced concrete beam-column joint specimens in the literature [31][32][33] and the test data of four recycled steel fiber-reinforced concrete cruciform frame joint specimens in this paper are selected as shown in Table 7. According to formulas ( 21) and ( 26), the shear capacity of eleven joint specimens is statistically analyzed, and the calculation models of shear capacity of recycled steel fiber-reinforced cruciform concrete frame beam-column joints are fitted, respectively, as follows:…”

Section: Calculation Model Of Shear Capacity Of Recycled Steelmentioning

confidence: 99%

[Retracted] Study on Seismic Performance of Recycled Steel Fibers Locally Reinforced Cruciform Concrete Frame Beam‐Column Joint

2022

Advances in Civil Engineering

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At present, concrete frame structures are widely used, and the frame beam-column joints are the key parts of the whole frame in seismic resistance. In previous studies, recycled steel fiber-reinforced concrete is a new type of environment-friendly reinforcement material, which can also be widely used in the construction industry. Therefore, in this paper, MTS electrohydraulic servo loading systems were used to carry out low-cycle reciprocating cyclic loading tests to study the seismic performance of five 1/2 scale cruciform concrete frame beam-column joint specimens with plain concrete, normal steel fiber-reinforced concrete, and three recycled steel fiber-reinforced concrete with different fiber contents in the joint core area. The results show that the addition of normal steel fibers can improve the bearing capacity, ductility, energy dissipation capacity, and shear strength of concrete frame joint specimens and delay the stiffness degradation of joint specimens, recycled steel fibers can improve the seismic performance of the cruciform concrete frame joints better than normal steel fibers, and the seismic performance increases gradually with the increases of volume ratio of recycled steel fibers. Moreover, with the recycled steel fiber content from 0.5% to 1.0% and then to 1.5%, the increased amplitude of the seismic performance of joint specimens increases. Considering the reinforcing effect of recycled steel fibers on concrete matrix and based on the design formula of shear capacity of reinforced concrete joints, the design formulas of shear capacity of recycled steel fiber-reinforced concrete beam-column joints were established by using the statistical analysis method and the baroclinic rod-truss model, and the calculation results were in good agreement with the test results. This study can provide references for seismic performance research of steel fiber-reinforced beam-column joints and the recycling of steel wire from waste tires.

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Section: Calculation Model Of Shear Capacity Of Recycled Steelmentioning

confidence: 99%

[Retracted] Study on Seismic Performance of Recycled Steel Fibers Locally Reinforced Cruciform Concrete Frame Beam‐Column Joint

2022

Advances in Civil Engineering

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“…• Advanced microstructural characterization techniques. Many advanced techniques were recently proposed in examining microstructural characteristics of a material, such as the machine-based learning method (Chan et al, 2020;Liu et al, 2021) and deep convolutional neural networks (Dong et al, 2020). New potential methods need to be explored to obtain a better understanding of the microstructural characteristics of the ECC after being exposed to elevated temperatures.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Elevated Temperature on Engineered Cementitious Composite Microstructural Behavior: An Overview

Khazani¹,

Lian²,

Lee³

et al. 2022

JST

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This paper discusses the quantitative bibliographic data derived from scientific publications on Engineered Cementitious Composites (ECC) subjected to elevated temperature, the influence of elevated temperature on the mechanical properties, particularly the compressive strength and microstructure behavior of Engineered Cementitious Composites (ECC) mixtures based on the review of previous pieces of literature. Systematic literature reviews were employed as the methodology in this study. The age of related publications selected to be reviewed was limited to publications for the past ten years, 2010 to December 2020. It was found from available research that exposure of the ECC specimen at the elevated temperature starting from 200oC significantly reduced the compressive strength when the temperature increases, melting of fiber and increase of porosity causes the dramatically increase micro-cracks.

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“…One feature of the composites is that their micro-scale properties significantly affect the macroscopic properties [ 1 , 2 , 3 , 4 ]. An ability to describe microstructural phenomena results in a better understanding of the macroscopic behavior of the material.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Properties Prediction of Poly [(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) Biocomposites on a Chosen Example

2022

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This paper aims to experimentally determine the properties of the poly [(3-hydroxybutyrate)-co-(3-hydroxyvalerate)]—(PHBV)—30% hemp fiber biocomposite, which is important in terms of numerical simulations of product manufacturing, and to evaluate the mechanical properties by means of micromechanical modeling. The biocomposite was manufactured using a single-screw extruder. Specimens for testing were produced by applying the injection molding technology. Utilizing the simulation results of the plastic flow, carried out by the Moldflow Insight 2016 commercial software and the results of experimental tests, the forecasts of selected composite mechanical properties were performed by means of both numerical and analytical homogenization methods. For this purpose, the Digimat software was applied. The necessary experimental data to perform the calculations for the polymer matrix, fibers, and the biocomposite were obtained by rheological and thermal studies as well as elementary mechanical tests. In the paper, the method of determining selected properties of the biocomposite and the method of forecasting its other properties are discussed. It shows the dependence of the predicted, selected properties of the biocomposite on the filler geometry assumed in the calculations and the homogenization method adopted for the calculations. The results of the work allow for the prediction of properties of the PHBV biocomposites—hemp fiber for any amount of filler used. Moreover, the results allow for the estimation of the usefulness of homogenization methods for the prediction of properties of the PHBV-hemp fiber biocomposites. Furthermore, it was found that for the developed and tested biocomposites, the most effective possibility of mechanical properties prediction is using the Mori-Tanaka homogenization model, which unfortunately has some limitations.

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Microstructural characteristics and their impact on mechanical properties of steel-PVA fiber reinforced concrete

Cited by 68 publications

References 51 publications

[Retracted] Study on Seismic Performance of Recycled Steel Fibers Locally Reinforced Cruciform Concrete Frame Beam‐Column Joint

[Retracted] Study on Seismic Performance of Recycled Steel Fibers Locally Reinforced Cruciform Concrete Frame Beam‐Column Joint

The Effect of Elevated Temperature on Engineered Cementitious Composite Microstructural Behavior: An Overview

The Mechanical Properties Prediction of Poly [(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) Biocomposites on a Chosen Example

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