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. 2021 Jul 29;13(15):2500.
doi: 10.3390/polym13152500.

Bending and Shear Behaviour of Waste Rubber Concrete-Filled FRP Tubes with External Flanges

Wahid Ferdous  1 , Allan Manalo  1 , Omar S AlAjarmeh  1   2 , Yan Zhuge  3 , Ali A Mohammed  4 , Yu Bai  5 , Thiru Aravinthan  1 , Peter Schubel  1
Affiliations

Bending and Shear Behaviour of Waste Rubber Concrete-Filled FRP Tubes with External Flanges

Wahid Ferdous et al. Polymers (Basel). .

Abstract

An innovative beam concept made from hollow FRP tube with external flanges and filled with crumbed rubber concrete was investigated with respect to bending and shear. The performance of the rubberised-concrete-filled specimens was then compared with hollow and normal-concrete-filled tubes. A comparison between flanged and non-flanged hollow and concrete-filled tubes was also implemented. Moreover, finite element simulation was conducted to predict the fundamental behaviour of the beams. The results showed that concrete filling slightly improves bending performance but significantly enhances the shear properties of the beam. Adding 25% of crumb rubber in concrete marginally affects the bending and shear performance of the beam when compared with normal-concrete-filled tubes. Moreover, the stiffness-to-FRP weight ratio of a hollow externally flanged round tube is equivalent to that of a concrete-filled non-flanged round tube. The consideration of the pair-based contact surface between an FRP tube and infill concrete in linear finite element modelling predicted the failure loads within a 15% margin of difference.

Keywords: bending and shear properties; composite structures; crumbed rubber concrete; externally flanged-tube; hollow and concrete-filled tubes; waste tyres.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Cross-sectional view of the proposed composite railway sleeper.
Figure 2
Figure 2
Dimensions of FRP tube with external flanges.
Figure 3
Figure 3
Test setup: (a) four-point bending (FPB), (b) short beam shear (SBS) and (c) asymmetrical beam shear (ABS).
Figure 4
Figure 4
Comparison between experimental and FE results based on failure modes (a) FPB test, (b) FE model for FPB (c) SBS test, (d) FE model for SBS, (e) ABS test and (f) FE model for ABS.
Figure 5
Figure 5
Total applied load-displacement behaviour: (a) FPB, (b) SBS and (c) ABS setup.
Figure 6
Figure 6
Total applied load–strain behaviour: (a) bending strain under FPB, (b) bending strain under SBS, (c) shear strain under SBS and (d) shear strain under ABS.
Figure 7
Figure 7
FE model, (a) SBS-1-NC and (b) ABS-1-H.
Figure 8
Figure 8
Effect of tube thickness on bending stiffness.
Figure 9
Figure 9
Comparison between round FRP tubes with and without external flanges (a) hollow round tube [9], (b) hollow externally flanged round tube, (c) concrete-filled round tube [9] and (d) concrete-filled externally flanged round tube.
See this image and copyright information in PMC

References

    1. Manalo A., Maranan G., Benmokrane B., Cousin P., Alajarmeh O., Ferdous W., Liang R., Hota G. Comparative durability of GFRP composite reinforcing bars in concrete and in simulated concrete environments. Cem. Concr. Compos. 2020;109:103564. doi: 10.1016/j.cemconcomp.2020.103564. - DOI
    1. Ferdous W., Ngo T.D., Nguyen K.T.Q., Ghazlan A., Mendis P., Manalo A. Effect of fire-retardant ceram powder on the properties of phenolic-based GFRP composites. Compos. Part B Eng. 2018;155:414–424. doi: 10.1016/j.compositesb.2018.09.032. - DOI
    1. Ferdous W., Bai Y., Almutairi A.D., Satasivam S., Jeske J. Modular assembly of water-retaining walls using GFRP hollow profiles: Components and connection performance. Compos. Struct. 2018;194:1–11. doi: 10.1016/j.compstruct.2018.03.074. - DOI
    1. Ferdous W., Almutairi A.D., Huang Y., Bai Y. Short-term flexural behaviour of concrete filled pultruded GFRP cellular and tubular sections with pin-eye connections for modular retaining wall construction. Compos. Struct. 2018;206:1–10. doi: 10.1016/j.compstruct.2018.08.025. - DOI
    1. Australian-Tenders . Expression of Interest for Alternative Composite Sleeper Product, Reference Number: QRP-15-150A. Queensland Rail Limited; Brisbane, Australia: 2016.

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