Early hydration of reactive sulfur doped C2S-rich cement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F19%3AN0000092" target="_blank" >RIV/26232511:_____/19:N0000092 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Early hydration of reactive sulfur doped C2S-rich cement

Popis výsledku v původním jazyce

Introduction of C2S-rich cements in production would result in reduction of CO2 emissions, energy saving and also has the additional practical advantage of requiring less high-grade limestone as a raw material. Paper deals with early hydration of cement based on C2S-rich clinker doped with sulfur in combination with Li. Early hydration of reference C2S-rich clinker cement paste was corelated with cement pastes of doped clinker cements. The course of hydration was studied by isothermal calorimetry, XRD methods and DTA-TGA. Main exothermic reaction and periods of hydration of C2S-rich S doped clinker cements are described in the paper. Reactivity of cement monitored as heat flow exotherms of cement paste was correlated with phase composition of cements. Doping of the C2S by the S or the combination of S and Li significantly increases the reactivity of the C2S-rich cement. Start of β-C2S reactions are detectable by monitoring the portlandite double endotherm on DTA, heat flow development during deceleration period of hydration in isothermal calorimeter and changes in phase composition including amorphous phase by XRD methods.

Název v anglickém jazyce

Early hydration of reactive sulfur doped C2S-rich cement

Popis výsledku anglicky

Introduction of C2S-rich cements in production would result in reduction of CO2 emissions, energy saving and also has the additional practical advantage of requiring less high-grade limestone as a raw material. Paper deals with early hydration of cement based on C2S-rich clinker doped with sulfur in combination with Li. Early hydration of reference C2S-rich clinker cement paste was corelated with cement pastes of doped clinker cements. The course of hydration was studied by isothermal calorimetry, XRD methods and DTA-TGA. Main exothermic reaction and periods of hydration of C2S-rich S doped clinker cements are described in the paper. Reactivity of cement monitored as heat flow exotherms of cement paste was correlated with phase composition of cements. Doping of the C2S by the S or the combination of S and Li significantly increases the reactivity of the C2S-rich cement. Start of β-C2S reactions are detectable by monitoring the portlandite double endotherm on DTA, heat flow development during deceleration period of hydration in isothermal calorimeter and changes in phase composition including amorphous phase by XRD methods.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20500 - Materials engineering

Projekt

<a href="/cs/project/GA19-05762S" target="_blank" >GA19-05762S: Hydratace a vlastnosti reaktivních vysocebelitických cementů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Papers and posters proceedings 15th International Congress on the Chemistry of Cement

ISBN

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ISSN

2523-935X

e-ISSN

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Počet stran výsledku

10

Strana od-do

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Název nakladatele

Research Institute of Binding Materials Prague Ltd.

Místo vydání

Prague, Czech Republic

Místo konání akce

Prague, Czech Republic

Datum konání akce

16. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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