Early hydration of C2S doped with combination of S and 80 Li

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F20%3AN0000046" target="_blank" >RIV/26232511:_____/20:N0000046 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs42452-020-2188-3" target="_blank" >https://link.springer.com/article/10.1007%2Fs42452-020-2188-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s42452-020-2188-3" target="_blank" >10.1007/s42452-020-2188-3</a>

Result language

angličtina

Original language name

Early hydration of C2S doped with combination of S and 80 Li

Original language description

Production of low-energy cements would result in energy saving and lower CO2 emissions related to reduced consumption of fuel and high-grade limestone as a raw material. Belite rich clinker, made more reactive by doping with combination of S and Li, could possibly be one of the low-energy alternatives for Portland cement clinker. Paper describes the preparation of doped belite and deals with its early hydration and reactivity. Belite rich clinkers were prepared in laboratory in high-temperature solid state synthesis. Pure substances were used for the preparation of raw meal and clinker. Early hydration heat flow development of cement pastes was monitored by isothermal calorimetry, changes in phase composition by "in situ" X-ray diffraction and TGA/DTA and microstructure by SEM-SE. Heat flow exotherms were correlated with quantified phase composition at given time. Intensity and position of main exothermic peak related to hydration of C3S is changing with increasing Li content. Doping of the C2S by the S or the combination of S and Li significantly increases the reactivity of the C2S-rich cement. The formation of C-S-H products is a continuous process that depends mainly on C3S during first 6 h and then is supported by slow reaction of beta-C(2)5. The reactivity of C(2)5 is affected by the timing of the hydration of other clinker phases. Two generations of portlandite formation detectable as a double endotherm on TGA/DTA can be attributed to hydration of C3S and beta-C(2)5.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

SN Applied Sciences

ISSN

2523-3963

e-ISSN

2523-3971

Volume of the periodical

2

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

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UT code for WoS article

000517978900114

EID of the result in the Scopus database

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