Compression Behavior of Concrete Cylinders Externally Confined by Flax Fiber Reinforced Polymer Sheets

Xia, Yuanyuan; Xian, Guijun; Kafodya, Innocent; Li, Hui

doi:10.1260/1369-4332.17.12.1825

Cited by 28 publications

(14 citation statements)

References 23 publications

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“…Furthermore, the dilation of confined sawdust-reinforced ice near mid-height region was more significant than that The typical failure modes of PIFFT and SIFFT specimens after the compression tests are shown in Figure 6. Both PIFFT and SIFFT specimens failed by the sudden rupture of flax FRP tubes outside the additional confinement zone at two ends accompanied by a loud popping noise, which was very similar to the failure mode of concrete-filled flax FRP tubular (CFFT) short columns under axial compression reported by Xia et al [44]. The flax FRP tubes were carefully removed after finishing the tests.…”

Section: General Observationssupporting

confidence: 71%

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

et al. 2020

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Sawdust-reinforced ice-filled flax fiber-reinforced polymer (FRP) tubular (SIFFT) columns are newly proposed to be used as structural components in cold areas. A SIFFT column is composed of an external flax FRP tube filled with sawdust-reinforced ice. The compressive behavior of circular SIFFT short columns was systematically investigated. Four types of short columns with circular sections, including three plain ice specimens, three sawdust-reinforced ice specimens (a mixture of 14% sawdust and 86% ice in weight), nine plain ice-filled flax FRP tubular (PIFFT) specimens and nine SIFFT specimens, were tested to assess the concept of the innovative composite columns. The test variables were the thickness of flax FRP tubes and the type of ice cores. The test results indicated that the lateral dilation and the development of cracks of the ice cores were effectively suppressed by outer flax FRP tubes, thus causing a considerable enhancement in the compressive strength. Moreover, the compressive behavior, energy-absorption capacity, and anti-melting property of sawdust-reinforced ice cores were better than those of plain ice cores confined by flax FRP tubes with the same thicknesses. The proposed equations for estimating ultimate bearing capacities of PIFFT and SIFFT short columns were shown to provide reasonable and accurate predictions.

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Section: General Observationssupporting

confidence: 71%

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

et al. 2020

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“…Regression analysis was commonly used to modify the expressions of BFRP-confined cylinders based on the model (Lam and Teng, 2004; Teng et al, 2009) with tested data (Campione et al, 2015; Ludovico et al, 2010; Ma et al, 2018; Xia et al, 2014). There were still controversies about the BFRP confinement effect.…”

Section: Introductionmentioning

confidence: 99%

Compressive behavior of circular and square concrete column externally confined by different types of basalt fiber–reinforced polymer

Huang

Zhu

et al. 2020

Advances in Structural Engineering

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This article studies the compressive behavior of concrete columns confined by different basalt fiber–reinforced polymers. A total of 30 columns were divided into 10 groups according to section shapes (circular and square), basalt fiber–reinforced polymer types (unidirectional basalt fiber–reinforced polymer, bidirectional basalt fiber–reinforced polymer, and hybrid basalt fiber–reinforced polymer/carbon fiber–reinforced polymers), and number of layers (0, 1, and 2). The test results showed that the compressive strengths of confined specimens increased by 20%–71% for circular columns and by 23%–41% for square columns. Similarly, the ultimate strains improved by 49%–296% for circular specimens and by 45%–145% for square specimens. The two-layer basalt fiber–reinforced polymer jacket had the best confinement effect, whereas the confining effect of bidirectional basalt fiber–reinforced polymer wrapping was relatively lower than that of unidirectional basalt fiber–reinforced polymer wrapping. Moreover, both the strength and ultimate strain of confined concrete improved with increasing number of basalt fiber–reinforced polymer layers. Finite element numerical models were also developed and verified by experimental results, and then the stress distributions of basalt fiber–reinforced polymer jackets and cross-sectional concrete were presented. Based on the test results and experimental data from several existing studies, modified strength and ultimate strain models were further developed for basalt fiber–reinforced polymer-confined circular and square columns.

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“…Xian et al used a plain-woven flax fabric with room temperature cured epoxy to confine concrete cylinders (Fig. 23) [50]. The compressive results showed that flax fabric-reinforced composite improved ultimate strain and stress of the cylinders by more than ten-and twofold, respectively, depending on the fabric layers applied.…”

Section: Development Of Quasi-structural and Function-integrated Compmentioning

confidence: 99%

An overview of structural-functional-integrated composites based on the hierarchical microstructures of plant fibers

et al. 2018

Adv Compos Hybrid Mater

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Plant fiber-reinforced composites have raised great attention among materials scientists and engineers during the past decade. Most of the efforts were put on the interfacial modifications to improve the mechanical properties of the composites so that they could partly replace the currently largely used glass fiber-reinforced composites. The modifications were mainly focused on the surface treatment of plant fibers so that mechanical or chemical bonding between plant fibers and polymeric matrices could be set up. However, the unique hierarchical microstructures of plant fibers make the building up of multiscale interfaces possible so that more forces or energies would be needed to fracture the plant fiber-reinforced composites. The additional hollow structures could also bring benefits for sound absorption and damping properties. Therefore, this article reviewed R&D efforts to develop structural and functional-integrated plant fiber-reinforced composites by fully taking advantage of the hierarchical microstructures of plant fibers. Firstly, the unique hierarchical structures of plant fibers were revealed and hierarchical theoretical models for mechanical properties were discussed. Then, the modification, characterization, and evaluation of plant fibers in terms of their interfacial properties with polymeric matrices, especially by nanotechnologies with the consideration of their unique hierarchical microstructures, were reviewed. Finally, the design and manufacture of quasi-structures and structural-damping components using technologies that have been fully adapted to state-of-the-art industrial processes for use in critical applications, such as aircraft interiors, rail transportation vehicles, and constructions, were also introduced.

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Compression Behavior of Concrete Cylinders Externally Confined by Flax Fiber Reinforced Polymer Sheets

Cited by 28 publications

References 23 publications

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

Compressive Behavior of Circular Sawdust-Reinforced Ice-Filled Flax FRP Tubular Short Columns

Compressive behavior of circular and square concrete column externally confined by different types of basalt fiber–reinforced polymer

An overview of structural-functional-integrated composites based on the hierarchical microstructures of plant fibers

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