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Influence of Different Fibre Types on the Rheology of Strain Hardening Cementitious Composites Read chapter Read first chapter

2021 | OriginalPaper | Chapter

A Computational Sectional Approach for the Flexural Creep Behavior of Cracked FRC

Authors : Rutger Vrijdaghs, Marco di Prisco, Lucie Vandewalle

Published in: Fibre Reinforced Concrete: Improvements and Innovations

Publisher: Springer International Publishing

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Abstract

This paper presents a computational model to calculate and predict the flexural creep behavior in a cracked fiber reinforced concrete (FRC) section. The proposed model is based on uniaxial creep data and consists of three steps.
In the first step, an inverse analysis algorithm is presented to model the monotonic bending behavior of a notched FRC beam in accordance with EN 14651. A simplified and numerically optimized method is compared to experimental data and a good agreement is found.
In a second step, the unloading behavior of the beam is taken into account. Calibrated on experimental data, the model is able to accurately and precisely predict the unloading behavior. Further validation comes from the location of the neutral axis, and the deformation profile.
In a third step, the flexural creep behavior is predicted based on the results in the second step. The creep data is supplied in uniaxial form, which allows greater applicability across various FRC mixtures. The proposed approach is able to take into account stress redistribution following fiber fracture. Furthermore, the time-dependent effects of the stress redistributions are also accounted for. As such, the model is able to predict tertiary creep and structural failure under sustained loading.

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previous chapter Post-cracking Behaviour of Glass Fibre Reinforced Concrete with Recycled Aggregates
next chapter Shrinkage of Steel-Fibre-Reinforced Lightweight Concrete
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Metadata
Title
A Computational Sectional Approach for the Flexural Creep Behavior of Cracked FRC
Authors
Rutger Vrijdaghs
Marco di Prisco
Lucie Vandewalle
Copyright Year
2021
Book
Fibre Reinforced Concrete: Improvements and Innovations

Print ISBN: 978-3-030-58481-8

Electronic ISBN: 978-3-030-58482-5

Copyright Year: 2021

DOI
https://doi.org/10.1007/978-3-030-58482-5_32