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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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Mendis, Priyan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2020Cohesive-strength properties versus porosity of cementitious materialscitations
- 2020Identification of transversely isotropy of calcium silicate hydrate using nanoindentation and finite element analysiscitations
- 2020Cohesive-strength homogenisation model of porous and non-porous materials using linear comparison composites and applicationcitations
- 2020Effect of spiral spacing and concrete strength on behavior of GFRP-reinforced hollow concrete columnscitations
- 2019Study of strain-hardening behaviour of fibre-reinforced alkali-activated fly ash cementcitations
- 2019An investigation of nanomechanical properties of Materials using nanoindentation and Artificial Neural Networkcitations
- 2018Creep properties of cement and alkali activated fly ash materials using nanoindentation techniquecitations
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article
Study of strain-hardening behaviour of fibre-reinforced alkali-activated fly ash cement
Abstract
<p>This paper presents a study of parameters affecting the fibre pull out capacity and strain-hardening behaviour of fibre-reinforced alkali-activated cement composite (AAC). Fly ash is a common aluminosilicate source in AAC and was used in this study to create fly ash based AAC. Based on a numerical study using Taguchi's design of experiment (DOE) approach, the effect of parameters on the fibre pull out capacity was identified. The fibre pull out force between the AAC matrix and the fibre depends greatly on the fibre diameter and embedded length. The fibre pull out test was conducted on alkali-activated cement with a capacity in a range of 0.8 to 1.0 MPa. The strain-hardening behaviour of alkali-activated cement was determined based on its compressive and flexural strengths. While achieving the strain-hardening behaviour of the AAC composite, the compressive strength decreases, and fine materials in the composite contribute to decreasing in the flexural strength and strain capacity. The composite critical energy release rate in AAC matrix was determined to be approximately 0.01 kJ/m<sup>2</sup> based on a nanoindentation approach. The results of the flexural performance indicate that the critical energy release rate of alkali-activated cement matrix should be less than 0.01 kJ/m<sup>2</sup> to achieve the strain-hardening behaviour.</p>