Mechanical characterisation of braided BFRP rebars for internal concrete reinforcement

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Title: Mechanical characterisation of braided BFRP rebars for internal concrete reinforcement
Authors: Antonopoulou, Sofia
McNally, Ciaran
Byrne, Greg
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Date: 10-Oct-2018
Online since: 2019-01-16T09:22:29Z
Abstract: This study investigates the tensile behaviour of basalt fibre reinforced polymer (BFRP) composites that were developed using braiding as a manufacturing technique. Those materials will be introduced in concrete reinforcement applications. Three BFRP rebar sizes with a circular constant cross section and different braided configurations are developed and characterised with respect to their internal architecture. The braid angle on each layer of the rebar, varying from 10◦ to 45◦, is an important parameter that has a direct impact on its performance characteristics. The effective longitudinal in-plane modulus (ExFRP) of each braided sample is calculated numerically using the classical laminate theory (CLT) approach and then, tensile tests are performed according to the relevant standard. Comparisons between analytical and experimental data demonstrate a significant influence of braiding parameters, like braiding angle and number of braiding layers, on the mechanical properties of BFRP rebars. In addition, it is noteworthy that all predicted moduli determined with CLT numerical approach are found to be higher than the test results and overestimate rebar’s stiffness, most probably due to the degree of undulation from braiding process.
Funding Details: European Commission Horizon 2020
Type of material: Conference Publication
Publisher: CRC Press
Keywords: BFRP rebarsBraiding methodTensile behaviourMechanical characterisation
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Language: en
Status of Item: Peer reviewed
Conference Details: The 6th International Symposium on Life-Cycle Civil Engineering (IALCCE2018), Ghent, Belgium, 28-31 October 2018
ISBN: 9781138626331
Appears in Collections:Civil Engineering Research Collection
TRUSS-ITN Research Collection

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