Publication result detail

Thaumasite formation by hydration of sulphosilicate clinker

DVOŘÁK, K.; VŠIANSKÝ, D.; GAZDIČ, D.; FRIDRICHOVÁ, M.; VAIČIUKYNIENĖ, D.

Original Title

Thaumasite formation by hydration of sulphosilicate clinker

English Title

Thaumasite formation by hydration of sulphosilicate clinker

Type

WoS Article

Original Abstract

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 °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.

English abstract

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 °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.

Keywords

Sulphosilicate clinker; Hydration; Ternesite; Thaumasite; Sustainability;

Key words in English

Sulphosilicate clinker; Hydration; Ternesite; Thaumasite; Sustainability;

Authors

DVOŘÁK, K.; VŠIANSKÝ, D.; GAZDIČ, D.; FRIDRICHOVÁ, M.; VAIČIUKYNIENĖ, D.

RIV year

2021

Released

10.12.2020

Publisher

Elsevier

Location

Nizozemí

ISBN

2352-4928

Periodical

Materials Today Communications

Volume

2020

Number

25

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

9

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S2352492820324600?via%3Dihub

BibTex

@article{BUT165362,
  author="Karel {Dvořák} and Dalibor {Všianský} and Dominik {Gazdič} and Marcela {Fridrichová} and Danute {Vaičiukynienė}",
  title="Thaumasite formation by hydration of sulphosilicate clinker",
  journal="Materials Today Communications",
  year="2020",
  volume="2020",
  number="25",
  pages="1--9",
  doi="10.1016/j.mtcomm.2020.101449",
  url="https://www.sciencedirect.com/science/article/pii/S2352492820324600?via%3Dihub"
}