Detail publikace

Supersulphated cements from waste materials

BÍLEK s.r., V., BUJDOŠ D., PEŠATA M., PROCHÁZKA M., BÍLEK j.r. V., SOUSEDÍK B.

Originální název

Supersulphated cements from waste materials

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Supersulphated cements are considered to be one of the first alkali-activated cements. Ground granulated blast-furnace slag is activated with a small amount of Portland cement in the presence of gypsum, providing C-S-H gel and ettringite as the main reaction products. These materials exhibit some good properties; the most important of these being good sulphate resistance and also good environmental effects. Standard EN15743+A1 "Supersulphated cement" describes the conditions for the composition of this binder. In this paper, the product after desulphurisation (PPR) from the Třebovice heating plant (Ostrava) was used as a source of gypsum. Strength development was recorded up to 91 days for different ratios of compounds. Early strengths are very low and are higher for higher ordinary Portland cement content. At 28 and 91 days of age the strengths are almost the same for gypsum contents from 10 to 20% and all cement contents (2.5, 3.75% and 5%). These strengths are relatively high - around 50 MPa. Supersulphated cements can be a good choice for the use of waste material - the product after desulphurisation.

Klíčová slova

fly ash; gypsum; GGBFS; supersulphated cement

Autoři

BÍLEK s.r., V., BUJDOŠ D., PEŠATA M., PROCHÁZKA M., BÍLEK j.r. V., SOUSEDÍK B.

Vydáno

1. 7. 2022

Nakladatel

American Concrete Institute

Místo

Milán

ISBN

978-1-64195-184-5

Kniha

SP-355: Recent Advances in Concrete Technology and Sustainability Issues

ISSN

0193-2527

Periodikum

Publication SP - American Concrete Institute

Stát

neuvedeno

Strany od

375

Strany do

382

Strany počet

8

BibTex

@inproceedings{BUT182235,
  author="Vlastimil {Bílek}",
  title="Supersulphated cements from waste materials",
  booktitle="SP-355: Recent Advances in Concrete Technology and Sustainability Issues",
  year="2022",
  journal="Publication SP - American Concrete Institute",
  pages="375--382",
  publisher="American Concrete Institute",
  address="Milán",
  isbn="978-1-64195-184-5",
  issn="0193-2527"
}