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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Marcos-Meson, Victor
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Publications (6/6 displayed)
- 2020Durability of cracked SFRC exposed to wet-dry cycles of chlorides and carbon dioxide – Multiscale deterioration phenomenacitations
- 2019The influence of concrete maturity on the pull-out behaviour of steel fibres at early-ages
- 2019Coupled mass transport, chemical, and mechanical modelling in cementitious materials: A dual-lattice approach
- 2017Corrosion resistance of steel fibre reinforced concrete - A literature reviewcitations
- 2016Corrosion resistance of steel fibre reinforced concrete – a literature review
- 2015Experimental and numerical investigation of design parameters for hydronic embedded Thermally Active Surfaces ; Experimental and Numerical Investigation of Design Parameters for Hydronic Embedded Thermally Active Surfacescitations
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document
The influence of concrete maturity on the pull-out behaviour of steel fibres at early-ages
Abstract
Steel Fibre Reinforced Concrete (SFRC) is being used for the production of in-situ and prefabricated structural elements. The optimization of production and installation processes often require an accurate understanding of the early-age development of the mechanical performance of the hardening SFRC. However, there is limited data available describing the development of the fibre-matrix bond during the first weeks of maturing, and its relation to the mechanical properties of the hardened concrete matrix is not well understood. Single fibre pull-out tests were performed for straight and hooked end fibres embedded in concrete at ages between 3 and 14 days, to investigate the development of the bond strength over time. The compressive strength and elastic modulus were measured to correlate the pull-out performance with the mechanical properties of the concrete. The experiments showed an increase of the fibre-matrix bond over time at early ages. The maximum pull-out load for the straight fibres increased during the beginning of the hydration, corresponding to the development of the adhesive bond. Whereas, the mechanical bond of the hooked end fibres developed substantially over the first days of curing but decelerated gradually over the time investigated. This study provides insight of a correlation between pull-out behaviour of single fibres and the mechanical properties of the concrete matrix. The pull-out strength of steel fibres developed with time similarly to the strength and stiffness of the matrix; presenting a rapid development at early ages which decreases after the first week of curing, for the mix-design investigated.