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Description
| - Tématem této práce je použití elastických metod homogenizace pro předpověď elastických vlastností mikrostruktur materiálů založených na cementu. Tyto materiály mohou být analyzovány ve čtyřech nezávislých úrovních na základě kritéria charakteristické délky: C-S-H úroveň, úroveň cementové pasty, úroveň malty a betonu. Práce se soustřeďuje na úroveň cementové pasty, kde se odehrává většina změn během hydratace, zachycené modelem CEMHYD3D. Nový model evoluce C-S-HLD and C-S-HHD na mikroměřítku je zformulován a ověřen na výsledcích porozimetrie. Dále se uvažují tři elastické homogenizační přístupy: analytické methody jako Mori-Tanaka a %22samokonzistentní'' (self-constistent), metoda konečných prvků s různými okrajovými podmínkami a metoda založená na FFT transformaci. Jsou ověřeny rozličné experimenty z literatury, které ukazují potenciál homogenizačních metod. (cs)
- This report attempts to apply elastic homogenization methods for the prediction of elastic properties of the microstructures of cement-based materials. The latter may be analyzed on four independent scales, based on a characteristic length criterion; C-S-H level, cement paste level, mortar level and concrete level. The report focuses on the cement paste level, where the majority of changes occurs during the hydration, captured by CEMHYD3D model. A new model of C-S-HLD and C-S-HHD evolution at the microscale is presented and validated with the results from porosimetry. Three elastic homogenization approaches are taken into account; analytical methods such as the Mori-Tanaka or the self-consistent scheme, the FEM with different boundary conditions, and the method based on FFT transformation. Several experiments from the literature are validated showing the potential of homogenization methods.
- This report attempts to apply elastic homogenization methods for the prediction of elastic properties of the microstructures of cement-based materials. The latter may be analyzed on four independent scales, based on a characteristic length criterion; C-S-H level, cement paste level, mortar level and concrete level. The report focuses on the cement paste level, where the majority of changes occurs during the hydration, captured by CEMHYD3D model. A new model of C-S-HLD and C-S-HHD evolution at the microscale is presented and validated with the results from porosimetry. Three elastic homogenization approaches are taken into account; analytical methods such as the Mori-Tanaka or the self-consistent scheme, the FEM with different boundary conditions, and the method based on FFT transformation. Several experiments from the literature are validated showing the potential of homogenization methods. (en)
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Title
| - Elastic Properties of Hydrating Cement Paste Determined from Hydration Models
- Elastic Properties of Hydrating Cement Paste Determined from Hydration Models (en)
- Elastické vlastnosti hydratující cementové pasty určené z modelů hydratace (cs)
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skos:prefLabel
| - Elastic Properties of Hydrating Cement Paste Determined from Hydration Models
- Elastic Properties of Hydrating Cement Paste Determined from Hydration Models (en)
- Elastické vlastnosti hydratující cementové pasty určené z modelů hydratace (cs)
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skos:notation
| - RIV/68407700:21110/07:01131720!RIV08-MSM-21110___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21110/07:01131720
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - cement paste; concrete; elastic homogenization; micromechanics; mortar (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/mistoVydani
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http://linked.open...i/riv/nazevZdroje
| - Elastic Properties of Hydrating Cement Paste Determined from Hydration Models
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...v/pocetStranKnihy
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...iv/tvurceVysledku
| - Bittnar, Zdeněk
- Šmilauer, Vít
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http://linked.open...n/vavai/riv/zamer
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number of pages
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http://purl.org/ne...btex#hasPublisher
| - České vysoké učení technické v Praze
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https://schema.org/isbn
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http://localhost/t...ganizacniJednotka
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is http://linked.open...avai/riv/vysledek
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