The influence of pH buffers on hydration of hydraulic phases in system CaO-Al2O3
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F16%3APU118570" target="_blank" >RIV/00216305:26310/16:PU118570 - isvavai.cz</a>
Výsledek na webu
<a href="http://www.springer.com/home?SGWID=0-0-1003-0-0&aqId=2966587&download=1&checkval=45ae59c2baf0d98a5158ff223f4179f6" target="_blank" >http://www.springer.com/home?SGWID=0-0-1003-0-0&aqId=2966587&download=1&checkval=45ae59c2baf0d98a5158ff223f4179f6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10973-015-5190-z" target="_blank" >10.1007/s10973-015-5190-z</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The influence of pH buffers on hydration of hydraulic phases in system CaO-Al2O3
Popis výsledku v původním jazyce
The present paper deals with the study of pH buffer influence (pH + ions) on hydration course of tricalcium aluminate (C3A), monocalcium aluminate (CA), monocalcium di-aluminate (CA2) and dodecacalcium hepta-aluminate (C12A7). These calcium aluminate phases were synthesized at 1450°C (CA and C3A), 1600 °C (CA2) and 1360 °C (C12A7) respectively. The purity of synthetized products was controlled by XRD. Then, different calcium aluminate phases were hydrated at 25 °C in excess of water at pH 6 and with buffers to kept the pH values at 9, 11 and 13. The evolution of hydration heat was monitored by isothermal calorimetry during 48 hours. After this period, hydration was stopped and the products were cross-characterized with different techniques: X-ray diffraction (XRD), high-temperature X-ray diffraction (HT-XRD), combined differential thermal analysis - thermogravimetry - effluent gas analysis (DTA-TG-EGA). It was found out that the hydration course and the nature of hydration products of different calcium aluminate phases are strongly dependent on the hydration environment (pH + ions).
Název v anglickém jazyce
The influence of pH buffers on hydration of hydraulic phases in system CaO-Al2O3
Popis výsledku anglicky
The present paper deals with the study of pH buffer influence (pH + ions) on hydration course of tricalcium aluminate (C3A), monocalcium aluminate (CA), monocalcium di-aluminate (CA2) and dodecacalcium hepta-aluminate (C12A7). These calcium aluminate phases were synthesized at 1450°C (CA and C3A), 1600 °C (CA2) and 1360 °C (C12A7) respectively. The purity of synthetized products was controlled by XRD. Then, different calcium aluminate phases were hydrated at 25 °C in excess of water at pH 6 and with buffers to kept the pH values at 9, 11 and 13. The evolution of hydration heat was monitored by isothermal calorimetry during 48 hours. After this period, hydration was stopped and the products were cross-characterized with different techniques: X-ray diffraction (XRD), high-temperature X-ray diffraction (HT-XRD), combined differential thermal analysis - thermogravimetry - effluent gas analysis (DTA-TG-EGA). It was found out that the hydration course and the nature of hydration products of different calcium aluminate phases are strongly dependent on the hydration environment (pH + ions).
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10406 - Analytical chemistry
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
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Thermal Analysis and Calorimetry
ISSN
1388-6150
e-ISSN
1588-2926
Svazek periodika
neuveden
Číslo periodika v rámci svazku
124
Stát vydavatele periodika
HU - Maďarsko
Počet stran výsledku
10
Strana od-do
629-638
Kód UT WoS článku
000373576600007
EID výsledku v databázi Scopus
2-s2.0-84949933393