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Fibers 2015, 3(4), 432-449; doi:10.3390/fib3040432

Concrete-Filled-Large Deformable FRP Tubular Columns under Axial Compressive Loading

Department of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO 65401, USA
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Author to whom correspondence should be addressed.
Academic Editor: Mahmoud Reda Taha
Received: 29 August 2015 / Accepted: 28 September 2015 / Published: 14 October 2015
(This article belongs to the Special Issue Fiber Reinforced Polymers (FRP) for Infrastructure Applications)
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Abstract

The behavior of concrete-filled fiber tubes (CFFT) polymers under axial compressive loading was investigated. Unlike the traditional fiber reinforced polymers (FRP) such as carbon, glass, aramid, etc., the FRP tubes in this study were designed using large rupture strains FRP which are made of recycled materials such as plastic bottles; hence, large rupture strain (LRS) FRP composites are environmentally friendly and can be used in the context of green construction. This study performed finite element (FE) analysis using LS-DYNA software to conduct an extensive parametric study on CFFT. The effects of the FRP confinement ratio, the unconfined concrete compressive strength ( ), column size, and column aspect ratio on the behavior of the CFFT under axial compressive loading were investigated during this study. A comparison between the behavior of the CFFTs with LRS-FRP and those with traditional FRP (carbon and glass) with a high range of confinement ratios was conducted as well. A new hybrid FRP system combined with traditional and LRS-FRP is proposed. Generally, the CFFTs with LRS-FRP showed remarkable behavior under axial loading in strength and ultimate strain. Equations to estimate the concrete dilation parameter and dilation angle of the CFFTs with LRS-FRP tubes and hybrid FRP tubes are suggested. View Full-Text
Keywords: concrete-filled tube; large deformable FRP; large rupture strain; hybrid FRP; LS-DYNA concrete-filled tube; large deformable FRP; large rupture strain; hybrid FRP; LS-DYNA
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Abdelkarim, O.I.; ElGawady, M.A. Concrete-Filled-Large Deformable FRP Tubular Columns under Axial Compressive Loading. Fibers 2015, 3, 432-449.

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