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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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Bezdička, P.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Elastic properties and microstructure evolution of Zn2SnO4-spinel-containing composite ceramics based on tin oxide and zinc oxidecitations
- 2020Alkaline activation of low-reactivity ceramics: Peculiarities induced by the precursors' dual charactercitations
- 2019Effect of Cu-Zn coated steel fibers on high temperature resistance of reactive powder concretecitations
- 2018Influence of supplementary cementitious materials on the properties of concrete for secondary protection barrier in radioactive waste repositoriescitations
- 2017CW-Laser-Induced Solid-State Reactions in Mixed Micron-Sized Particles of Silicon Monoxide and Titanium Monoxide: Nano-Structured Composite with Visible Light Absorptioncitations
- 2017Titania aerogels with tailored nano and microstructure: Comparison of lyophilization and supercritical dryingcitations
- 2017Engineering properties of concrete suitable for constructing physical barriers in radioactive waste disposal facilities
- 2016Modified 20-titanium dioxide nanostructures: preparation, characteriza tion and photocatalytic assessment
- 2016Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesiscitations
- 2015Thermal Co-Decomposition of Silver Acetylacetonate and Tin (II) Hexafluoroacetylacetonate: Formation of Carbonaceous Ag/AgxSn(x=4 and 6.7)/SnO2 Compositescitations
- 2014Is non-buffered DMEM solution a suitable medium for in vitro bioactivity tests?citations
- 2014Thermal behaviour of natural and synthetic iron precipitates from mine drainagecitations
- 2014Novel complexes of Co2+, Ni2+, and Cu2+ with N-(phosphonomethyl)aminosuccinic acidcitations
- 2012Microstructural changes and residual properties of fiber reinforced cement composites exposed to elevated temperatures,Zmiany mikrostruktury i właściwości resztkowe kompozytów cementowych zbrojonych włóknami poddanych działaniu wysokich temperatur
- 2012IR Laser-Induced Breakdown in Tetramethyltin Adjacent to Ag or Au: Deposition of beta-Sn Nanograins-Containing Amorphous Au-Sn/C and Ag-Sn/C Filmscitations
- 2012Microstructural changes and residual properties of fiber reinforced cement composites exposed to elevated temperatures
- 2011Experimental investigation and thermodynamic simulation of the uranium oxide-zirconium oxide-iron oxide system in aircitations
- 2011IR Laser Deposition: Co2Sm5 Nanocrystals in Amorphous Sm-Co Phase and Amorphous Sm-Co Nanobodies in Carbonaceous Phasecitations
- 2010IR Laser-induced Ablation of Ag in Dielectric Breakdown of Gaseous Hydrocarbons: Simultaneous Occurrence of Metastable HCP and Stable FCC Ag Nanostructures in C:H Shell
Places of action
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conferencepaper
Engineering properties of concrete suitable for constructing physical barriers in radioactive waste disposal facilities
Abstract
Several concrete mixtures suitable for constructing engineered barriers in radioactive waste disposal facilities are designed and tested. The mix design is based on the utilization of a natural sorbent acting, at the same time, as supplementary cementitious material replacing a part of Portland cement and fine filler capable of radionuclide absorption and fixing. A representative set of engineering properties of the hardened concrete mixes is determined, including the pore size distribution, bulk density, matrix density, open porosity, compressive strength, water absorption coefficient, and apparent moisture diffusivity. Experimental results show that an appropriate dosage of the natural sorbent in the analyzed concrete is within the range of 30-50% of the mass of Portland cement. This level of Portland cement replacement makes possible to utilize effectively the pozzolanic properties of the sorbent and still preserve its necessary amount in the non-hydrated state. The mechanical properties of concrete are then satisfactory for the supposed load, the water-penetration protection ability is sufficient, and the microcrystalline structure of non-hydrated sorbent can provide a sufficient interior pore surface area for fixing the anticipated radionuclide dose.