The influence of supplementary cementitious materials on the hydration of Dyckerhoff G-Oil cement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU145332" target="_blank" >RIV/00216305:26310/22:PU145332 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10973-022-11444-y" target="_blank" >https://link.springer.com/article/10.1007/s10973-022-11444-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-022-11444-y" target="_blank" >10.1007/s10973-022-11444-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of supplementary cementitious materials on the hydration of Dyckerhoff G-Oil cement

Popis výsledku v původním jazyce

The kinetics of early hydration reactions of Dyckerhoff G-oil cement and its blends using conduction calorimeter and thermogravimetric analysis are reported in the present paper. The coupling effect of temperature (25, 40, 50, 60, 80 degrees C) and material composition (100, 95, 90, 85, 80, 75, 70, 65% Dyckerhoff) with different substitution levels by blast slag furnace, metakaolin and limestone were analyzed on the light of hydration products and activation energy of different reactions. Besides the initial peak in the first 10 min of hydration, two or more other particular peaks characterizing the sequence of successive hydration reactions of the cement are observed, the intensities and the time position of which depend on the temperatures and on the composition of the materials. The apparent activation energies calculated from the hydration peaks characterizing the different reactions decrease with the increase in the substitution levels, but that of the second peaks (31.95 to 33.31 kJ mol(-1)) is higher than that of the former (27.88 to 31.33 kJ mol(-1)) at the same level of substitution. Thermogravimetric analysis of the samples after calorimetric measurement shows that the main hydration products are C-S-H, C-A-S-H, CH, and calcium carbonate. Their quantity depends on the material composition of the material and the temperatures of hydration.

Název v anglickém jazyce

The influence of supplementary cementitious materials on the hydration of Dyckerhoff G-Oil cement

Popis výsledku anglicky

The kinetics of early hydration reactions of Dyckerhoff G-oil cement and its blends using conduction calorimeter and thermogravimetric analysis are reported in the present paper. The coupling effect of temperature (25, 40, 50, 60, 80 degrees C) and material composition (100, 95, 90, 85, 80, 75, 70, 65% Dyckerhoff) with different substitution levels by blast slag furnace, metakaolin and limestone were analyzed on the light of hydration products and activation energy of different reactions. Besides the initial peak in the first 10 min of hydration, two or more other particular peaks characterizing the sequence of successive hydration reactions of the cement are observed, the intensities and the time position of which depend on the temperatures and on the composition of the materials. The apparent activation energies calculated from the hydration peaks characterizing the different reactions decrease with the increase in the substitution levels, but that of the second peaks (31.95 to 33.31 kJ mol(-1)) is higher than that of the former (27.88 to 31.33 kJ mol(-1)) at the same level of substitution. Thermogravimetric analysis of the samples after calorimetric measurement shows that the main hydration products are C-S-H, C-A-S-H, CH, and calcium carbonate. Their quantity depends on the material composition of the material and the temperatures of hydration.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA19-16646S" target="_blank" >GA19-16646S: Potlačení negativního vlivu zinku v Portlandském cementu pomocí akcelerátorů hydratace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

1588-2926

Svazek periodika

147

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

HU - Maďarsko

Počet stran výsledku

14

Strana od-do

9935-9948

Kód UT WoS článku

000817845900002

EID výsledku v databázi Scopus

2-s2.0-85132995124