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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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Šimonová, Hana
Brno University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Hybrid Geopolymer Composites Based on Fly Ash Reinforced with Glass and Flax Fibers
- 2021Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humiditycitations
- 2021Deflection of an eccentric crack under mixed-mode conditions in an SCB specimencitations
- 2021Strength characteristics of concrete exposed to the elevated temperatures according to the temperature-time curve ISO 834citations
- 2021Influence of rock inclusion composition on the fracture response of cement-based composite specimenscitations
- 2021Advanced Evaluation of the Freeze–Thaw Damage of Concrete Based on the Fracture Testscitations
- 2021Fracture parameters of fly ash geopolymer mortars with carbon black and graphite filler
- 2021Numerical analysis of a semi-circular disc with an angled crack loaded in mixed-mode
- 2020Modelling of interfacial transition zone effect on resistance to crack propagation in fine-grained cement-based compositescitations
- 2020Mechanical Fracture and Fatigue Characteristics of Fine-Grained Composite Based on Sodium Hydroxide-Activated Slag Cured under High Relative Humiditycitations
- 2020Multi-parameter fracture mechanics: crack path in a mixed-mode specimencitations
- 2020Components of the Fracture Response of Alkali-Activated Slag Composites with Steel Microfiberscitations
- 2018Fracture properties of concrete specimens made from alkali activated binders.citations
Places of action
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conferencepaper
Fracture parameters of fly ash geopolymer mortars with carbon black and graphite filler
Abstract
In this study, the effect of carbon black and graphite filler on the crack initiation and fracture parameters of fly ash geopolymer mortar is investigated. The carbon black was added in the amount of 0.5 and 1.0% and graphite powder in the amount of 5 and 10% relative to the fly ash mass. The reference mixture without any filler was also prepared. The fracture characteristics were determined based on the results of the three-point bending test of prismatic specimens provided with an initial central edge notch. The fracture experiments were conducted at the age of 48 days. The vertical force (F), the displacement measured in the middle of the span length (d), and the crack mouth opening displacement (CMOD) were continuously recorded during the test. The records of fracture tests were subsequently evaluated using the effective crack model, work-of-fracture method, and double-K fracture model. The addition of both fine fillers led to a decrease in monitored mechanical fracture parameters in comparison with reference mortar.