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| Naji, M. |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Azevedo, Nuno Monteiro |
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Valizadeh, Afsaneh
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Publications (5/5 displayed)
- 2020The effect of specimen geometry on the compressive and tensile strengths of self-compacting rubberised concrete containing waste rubber granulescitations
- 2020Compressive and tensile strength fracture models for heavyweight geopolymer concretecitations
- 2020High-performance fibre-reinforced heavyweight self-compacting concretecitations
- 2020An investigation into the mechanical behaviour of fibre-reinforced geopolymer concrete incorporating NiTi shape memory alloy, steel and polypropylene fibrescitations
- 2019Development of Heavyweight Self-Compacting Concrete and Ambient-Cured Heavyweight Geopolymer Concrete Using Magnetite Aggregatescitations
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article
An investigation into the mechanical behaviour of fibre-reinforced geopolymer concrete incorporating NiTi shape memory alloy, steel and polypropylene fibres
Abstract
<p>This paper studies the use of nickel-titanium (NiTi) superelastic shape memory alloy (NiTi-SMA), steel, and polypropylene (PP) fibres as reinforcement in geopolymer concrete (GPC) to improve the overall mechanical properties. NiTi-SMA, steel and PP fibres were added to the GPC at the fibre volume contents of 1.00%, 0.75% and 0.50% for steel and NiTi-SMA and 0.20%, 0.15% and 0.10% for PP. In this study, workability, compressive strength, splitting tensile strength, modulus of elasticity, static flexural strength and cyclic flexural tests were conducted to investigate the behaviours of steel fibre-reinforced GPC (SFRGPC), NiTi-SMA fibre-reinforced GPC (NiTi-SMAFRGPC) and PP fibre-reinforced GPC (PPFRGPC). The results showed that the mechanical performance of FRGPC increased with the increment of steel and NiTi-SMA fibres, but deceased with the increment of PP fibre. SFRGPC mixes exhibited the largest compressive strength (39.39 MPa), splitting tensile strength (5.36 MPa) and flexural strength (12.53 MPa), whereas NiTi-SMAFRGPC mixes presented the superior cyclic flexural performance which showed the smallest residue deformation and largest re-centring ratios in four cycles in comparison with SFRGPC and PPFRGPC mixes.</p>