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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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Novotný, Radoslav
Brno University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Effect of four-component binder on characteristics of self-compacting and fibre-reinforced self-compacting mortarscitations
- 2023Influence of Anticorrosive Surface Treatment of Steel Reinforcement Fibers on the Properties of Ultra-High Performance Cement Compositecitations
- 2023Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperaturescitations
- 2023The Effects of Silica Fume and Superplasticizer Type on the Properties and Microstructure of Reactive Powder Concretecitations
- 2022Effect of alkali salts on the hydration process of belite clinkercitations
- 2022Influence of Anticorrosive Surface Treatment of Steel Reinforcement Fibers on the Properties of Ultra-High Performance Cement Compositecitations
- 2022The influence of supplementary cementitious materials on the hydration of Dyckerhoff G-Oil cementcitations
- 2022The thermal analysis of zinc oxide‑contaminated Portland cement blended with thiocyanates and determination of their effect on hydration and propertiescitations
- 2021Optimization of cementitious composite for heavyweight concrete preparation using conduction calorimetrycitations
- 2021Use of clay from a local source for calcination and subsequent preparation of the mixed cementcitations
- 2020Cement Kiln By-Pass Dust: An Effective Alkaline Activator for Pozzolanic Materialscitations
Places of action
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article
Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperatures
Abstract
The study of early and middle stages of hydration in the systems composed of Portland cement Class G (PC) - silica fume (SF) - metakaolin (MK) and PC - SF - blast furnace slag (BFS) was performed by Isothermal calorimetry, Thermogravimetric, X-ray diffraction, and Fourier Transform Infrared analyses in the mid-IR region. The influence of composition, temperature (25, 60, and 80 degrees C), and hydration media (water and geothermal solution) was investigated. Geothermal solution delayed main hydration, however, considering the times of the calorimetric maxima at 25 degrees C, it led to the formation of hydration products with more polymerized structures in larger amounts than during the hydration process using water. At higher temperatures, the deceleration effect of the geothermal solution became less evident, nevertheless higher degree of silica polymerization and more hydration products were found in samples that were hydrated in water. Regardless of the hydration temperature, the hydration carried out in geothermal solution became more effective already after 40 h. The effect of fine additives advanced by higher temperatures resulted in accelerated hydration represented by faster depletion of gypsum. The presence of SO4-AFm and CO3-AFm phases was confirmed during the deceleration period of the hydration process using water and geothermal solution, respectively.