Version 1
: Received: 21 September 2024 / Approved: 23 September 2024 / Online: 23 September 2024 (12:58:08 CEST)
How to cite:
Arce, A.; Kapsalis, P.; Stefanini, L.; Papanicolaou, C. G.; Triantafillou, T. C. Residual Flexural Performance of Large-Scale Ferronickel Slag Alkali-Activated Concrete Slabs After Fire Exposure. Preprints2024, 2024091736. https://doi.org/10.20944/preprints202409.1736.v1
Arce, A.; Kapsalis, P.; Stefanini, L.; Papanicolaou, C. G.; Triantafillou, T. C. Residual Flexural Performance of Large-Scale Ferronickel Slag Alkali-Activated Concrete Slabs After Fire Exposure. Preprints 2024, 2024091736. https://doi.org/10.20944/preprints202409.1736.v1
Arce, A.; Kapsalis, P.; Stefanini, L.; Papanicolaou, C. G.; Triantafillou, T. C. Residual Flexural Performance of Large-Scale Ferronickel Slag Alkali-Activated Concrete Slabs After Fire Exposure. Preprints2024, 2024091736. https://doi.org/10.20944/preprints202409.1736.v1
APA Style
Arce, A., Kapsalis, P., Stefanini, L., Papanicolaou, C. G., & Triantafillou, T. C. (2024). Residual Flexural Performance of Large-Scale Ferronickel Slag Alkali-Activated Concrete Slabs After Fire Exposure. Preprints. https://doi.org/10.20944/preprints202409.1736.v1
Chicago/Turabian Style
Arce, A., Catherine G. Papanicolaou and Thanasis C. Triantafillou. 2024 "Residual Flexural Performance of Large-Scale Ferronickel Slag Alkali-Activated Concrete Slabs After Fire Exposure" Preprints. https://doi.org/10.20944/preprints202409.1736.v1
Abstract
This paper investigates the flexural behavior of unfired and fired one-way slabs constructed from reinforced ferronickel slag-based alkali-activated concrete. The study aims to expand the limited knowledge of large-scale testing of alkali-activated concrete structural elements, with a particular emphasis on their post-fire performance. Four slabs, each measuring 2.1 × 0.9 × 0.18 m³, were produced—two made of alkali-activated concrete and two of conventional concrete incorporating ordinary Portland cement. Both types of concrete exhibited similar compressive strengths. In each group, one slab served as a reference (control specimen—tested under monotonic four-point bending in its original state), while the other was subjected to a standard fire curve on the tensioned side before mechanical testing. The fired slabs were then tested in a cooled condition under ambient conditions. The effect of fire on the alkali-activated concrete was further examined using mercury intrusion porosity and scanning electron microscopy. The results reveal that the load capacity of structural members cast with alkali-activated concrete is only slightly lower than that of their conventional concrete counterparts (6% lower). However, the alkaliactivated slabs retain more of their stiffness and ductility after fire exposure.
Keywords
Alkali-Activated material; concrete; structural application; slab; fire; high temperature
Subject
Engineering, Civil Engineering
Copyright:
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.
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