Thaumasite formation by hydration of sulphosilicate clinker

J 2020

Thaumasite formation by hydration of sulphosilicate clinker

DVORAK, Karel; Dalibor VŠIANSKÝ; Dominik GAZDIC; Marcela FRIDRICHOVA; Danute VAICIUKYNIENE et. al.

Základní údaje

Originální název

Thaumasite formation by hydration of sulphosilicate clinker

Autoři

DVORAK, Karel; Dalibor VŠIANSKÝ; Dominik GAZDIC; Marcela FRIDRICHOVA a Danute VAICIUKYNIENE

Vydání

Materials Today Communications, Amsterdam, Elsevier Science, 2020, 2352-4928

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

20101 Civil engineering

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.383

Kód RIV

RIV/00216224:14310/20:00117753

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1016/j.mtcomm.2020.101449

UT WoS

000600995700003

EID Scopus

2-s2.0-85090045866

Klíčová slova anglicky

Sulphosilicate clinker; Hydration; Ternesite; Thaumasite; Sustainability

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 14. 1. 2021 09:20, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Extensive research on sulphosilicate clinkers has been performed, primarily given by the ecological aspects. The formation of thaumasite and ettringite has become an important issue due to possible concrete deterioration, and also reducing greenhouse gas emissions. This work was aimed at hydration of ternesite based clinkers at low temperatures, with respect to thaumasite formation. Five clinkers with various compositions corresponding to stoichiometric ratios of elements in thaumasite and ternesite were prepared. Clinker-water suspensions were stored at 5 degrees C for up to 810 days. X-ray diffraction, DSC/TG, and SEM/EDS were used as the analytical tools. All the clinkers contained ternesite, belite, anhydrite, and free lime. As shown by the results, ternesite and belite preferably hydrate to CSH gels, and sulphate ions forming ternesite become a part of gypsum. The remaining portion of gypsum originated from anhydrite hydration. Gypsum reacted with silica and carbon dioxide to form thaumasite. Thaumasite was clearly identified already after 28 days of hydration, and for one sample, its content finally reached approximately 34 wt. %. It should be considered that the application of sulphoaluminate cements may possibly be connected with the sever risk of sulphate attack.

Citovat

DVORAK, Karel; Dalibor VŠIANSKÝ; Dominik GAZDIC; Marcela FRIDRICHOVA a Danute VAICIUKYNIENE. Thaumasite formation by hydration of sulphosilicate clinker. Materials Today Communications. Amsterdam: Elsevier Science, 2020, roč. 25, December 2020, s. 1-9. ISSN 2352-4928. Dostupné z: https://doi.org/10.1016/j.mtcomm.2020.101449.

@article{1727994,
   author = {Dvorak, Karel and Všianský, Dalibor and Gazdic, Dominik and Fridrichova, Marcela and Vaiciukyniene, Danute},
   article_location = {Amsterdam},
   article_number = {December 2020},
   doi = {https://doi.org/10.1016/j.mtcomm.2020.101449},
   keywords = {Sulphosilicate clinker; Hydration; Ternesite; Thaumasite; Sustainability},
   language = {eng},
   issn = {2352-4928},
   journal = {Materials Today Communications},
   title = {Thaumasite formation by hydration of sulphosilicate clinker},
   url = {https://doi.org/10.1016/j.mtcomm.2020.101449},
   volume = {25},
   year = {2020}
}

TY  - JOUR
ID  - 1727994
AU  - Dvorak, Karel - Všianský, Dalibor - Gazdic, Dominik - Fridrichova, Marcela - Vaiciukyniene, Danute
PY  - 2020
TI  - Thaumasite formation by hydration of sulphosilicate clinker
JF  - Materials Today Communications
VL  - 25
IS  - December 2020
SP  - 1-9
EP  - 1-9
PB  - Elsevier Science
SN  - 23524928
KW  - Sulphosilicate clinker
KW  - Hydration
KW  - Ternesite
KW  - Thaumasite
KW  - Sustainability
UR  - https://doi.org/10.1016/j.mtcomm.2020.101449
L2  - https://doi.org/10.1016/j.mtcomm.2020.101449
N2  - Extensive research on sulphosilicate clinkers has been performed, primarily given by the ecological aspects. The formation of thaumasite and ettringite has become an important issue due to possible concrete deterioration, and also reducing greenhouse gas emissions. This work was aimed at hydration of ternesite based clinkers at low temperatures, with respect to thaumasite formation. Five clinkers with various compositions corresponding to stoichiometric ratios of elements in thaumasite and ternesite were prepared. Clinker-water suspensions were stored at 5 degrees C for up to 810 days. X-ray diffraction, DSC/TG, and SEM/EDS were used as the analytical tools. All the clinkers contained ternesite, belite, anhydrite, and free lime. As shown by the results, ternesite and belite preferably hydrate to CSH gels, and sulphate ions forming ternesite become a part of gypsum. The remaining portion of gypsum originated from anhydrite hydration. Gypsum reacted with silica and carbon dioxide to form thaumasite. Thaumasite was clearly identified already after 28 days of hydration, and for one sample, its content finally reached approximately 34 wt. %. It should be considered that the application of sulphoaluminate cements may possibly be connected with the sever risk of sulphate attack.
ER  -

DVORAK, Karel; Dalibor VŠIANSKÝ; Dominik GAZDIC; Marcela FRIDRICHOVA a Danute VAICIUKYNIENE. Thaumasite formation by hydration of sulphosilicate clinker. \textit{Materials Today Communications}. Amsterdam: Elsevier Science, 2020, roč.~25, December 2020, s.~1-9. ISSN~2352-4928. Dostupné z: https://doi.org/10.1016/j.mtcomm.2020.101449.

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