Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F14%3APU110441" target="_blank" >RIV/00216305:26310/14:PU110441 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1000.235" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMR.1000.235</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1000.235" target="_blank" >10.4028/www.scientific.net/AMR.1000.235</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions
Popis výsledku v původním jazyce
The pore structure of Portland cement pastes cured under different hydrothermal regimes was analyzed. Pore size distribution (PSD), hydraulic permeability coefficient (HK) and porosity (P) were found depending on temperature and steam pressure. With increasing hydrothermal characteristics, the pore structures degraded causing the depletion in compressive strength. Then, blast furnace slag (BFS) and silica fume (SF) were added to PC and cured under similar conditions. It was found that the pore structure was greatly improved. The effect of hydrothermal curing may be interpreted by the intensity and position of the peak, by the length and bimodal characteristic of PSD. The maximum concentration of pores of reference cement paste lies in the range 10 – 103 nm, and changes progressively to the size < 10 nm with increasing addition of BFS and SF. This behavior is attributed mainly to the presence of SF. Microstructure analysis shows hydrate products like needle CSH and CASH, which were stable under hydrothermal curing.
Název v anglickém jazyce
Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions
Popis výsledku anglicky
The pore structure of Portland cement pastes cured under different hydrothermal regimes was analyzed. Pore size distribution (PSD), hydraulic permeability coefficient (HK) and porosity (P) were found depending on temperature and steam pressure. With increasing hydrothermal characteristics, the pore structures degraded causing the depletion in compressive strength. Then, blast furnace slag (BFS) and silica fume (SF) were added to PC and cured under similar conditions. It was found that the pore structure was greatly improved. The effect of hydrothermal curing may be interpreted by the intensity and position of the peak, by the length and bimodal characteristic of PSD. The maximum concentration of pores of reference cement paste lies in the range 10 – 103 nm, and changes progressively to the size < 10 nm with increasing addition of BFS and SF. This behavior is attributed mainly to the presence of SF. Microstructure analysis shows hydrate products like needle CSH and CASH, which were stable under hydrothermal curing.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Ecology and New Building Materials and Products
ISBN
—
ISSN
1022-6680
e-ISSN
1662-8985
Počet stran výsledku
4
Strana od-do
235-238
Název nakladatele
Neuveden
Místo vydání
Neuveden
Místo konání akce
Čerá Hora
Datum konání akce
3. 6. 2014
Typ akce podle státní příslušnosti
CST - Celostátní akce
Kód UT WoS článku
—