| People | Locations | Statistics |
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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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Boris, Renata
Vilnius Gediminas Technical University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2022INVESTIGATIONS OF THE STRUCTURE AND HARDNESS OF DISSIMILAR STEEL-TO-ALUMINUM JOINTS MADE USINGLASER WELDING TECHNOLOGYcitations
- 2022Impact of Cellulolytic Fungi on Biodegradation of Hemp Shives and Corn Starch-Based Composites with Different Flame-Retardantscitations
- 2022Numerical Simulation of Thermal Conductivity and Thermal Stress in Lightweight Refractory Concrete with Cenospherescitations
- 2022Analysis of the Formed Protective Layer Inhibiting Alkali Corrosion in Aluminosilicate Refractory Castablescitations
- 2021Prolonging Bacterial Viability in Biological Concrete: Coated Expanded Clay Particlescitations
- 2021An Efficient Approach to Describe the Fiber Effect on Mechanical Performance of Pultruded GFRP Profilescitations
- 2019The Possibilities of Paper Sludge Waste (PSw) Utilization in Cement Materials
- 2019Variation of bending strength of fiber reinforced concrete beams due to fiber distribution and orientation and analysis of microstructurecitations
- 2019Impact of Differently Prepared Paper Production Waste Sludge (PSw) on Cement Hydration and Physical-Mechanical Propertiescitations
- 2018Long-term curing impact on properties, mineral composition and microstructure of hemp shive-cement composite
- 2017Thermite welding of Cu–Nb microcomposite wirescitations
- 2013Influence of temperature on the effect of plastification in concrete mixtures
Places of action
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article
Numerical Simulation of Thermal Conductivity and Thermal Stress in Lightweight Refractory Concrete with Cenospheres
Abstract
<jats:p>The main objective of this paper was to investigate the heat transfer of modified lightweight refractory concrete at the microscopic scale. In this work, such material was treated as a porous composite based on the compound of calcium aluminate cement and aluminosilicate cenospheres. The presence of air inclusions within the cenospheres was an essential factor in the reduction in thermal performance. Due to the intricacy of the subject investigated, our research employed numerical, theoretical, and experimental approaches. Scanning electron microscopy (SEM) imaging was performed to study the composite microstructure with a special focus on geometry, dimensions, and the distribution of cenospheres. Based on the experimental analysis, simplified geometrical models were generated to reproduce the main features of the composite matrix and cenospheres. A finite element framework was used to determine the effective thermal conductivity of such domains as well as the thermal stresses generated in the sample during the heat flow. A considerable difference in thermal properties was revealed by comparing the simulation results of the pure composite matrix and the samples, indicating a varying arrangement of cenosphere particles. The numerical results were complemented by a theoretical study that applied analytical models derived from the two-phase mixture theory—parallel and Landauer. A satisfactory agreement between numerical and theoretical results was achieved; however, the extension of both presented approaches is required.</jats:p>