Publication detail

Effect of alkali cation type on the plasticizing effect of ligno-sulfonate in alkali-activated systems

ILIUSHCHENKO, V. BÍLEK, V. KALINA, L. HRUBÝ, P. OPRAVIL, T. BOJANOVSKÝ, J.

Original Title

Effect of alkali cation type on the plasticizing effect of ligno-sulfonate in alkali-activated systems

Type

conference paper

Language

English

Original Abstract

The rheological properties of alkali-activated systems are significantly affected by the nature of the alkaline activator. Hydroxide-activated systems' workability is typically lower than that of alkali-activated systems but can be improved by lignosulfonate plasticizer. However, the lignosulfonate plasticizer's effectivity depends on the dosage of lignosulfonate, the nature of hydroxide and pH of their solutions. Therefore, in this study, the effectiveness of lignosulfonate plasticizer with respect to alkali ion type (Na+, K+, Li+) in alkali hydroxide-activated systems based on ground granulated blast furnace slag was evaluated. The concentration of the alkaline activator (NaOH, KOH and LiOH) was the same in all cases of 4M. The superplasticizer dosage was 0%, 0.5% and 1.0% of dry matter of lignosulfonate plasticizer to the slag weight. Rheological properties were determined using a rotational rheometer equipped with vane in-cup geometry working in oscillation amplitude sweep mode, from which critical strain and corresponding viscoelastic variables were obtained.

Keywords

Alkali-activated materials, plasticizing effect, rheology

Authors

ILIUSHCHENKO, V.; BÍLEK, V.; KALINA, L.; HRUBÝ, P.; OPRAVIL, T.; BOJANOVSKÝ, J.

Released

29. 9. 2021

Publisher

IOP Publishing

Location

Bristol

ISBN

1757-8981

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

1205

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

https://iopscience.iop.org/article/10.1088/1757-899X/1205/1/012016

Full text in the Digital Library

http://hdl.handle.net/11012/203345

BibTex

@inproceedings{BUT175418,
  author="Valeriia {Hrubá} and Vlastimil {Bílek} and Lukáš {Kalina} and Petr {Hrubý} and Tomáš {Opravil} and Jiří {Bojanovský}",
  title="Effect of alkali cation type on the plasticizing effect of ligno-sulfonate in alkali-activated systems",
  booktitle="IOP Conference Series: Materials Science and Engineering",
  year="2021",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="1205",
  number="1",
  pages="1--7",
  publisher="IOP Publishing",
  address="Bristol",
  doi="10.1088/1757-899X/1205/1/012016",
  issn="1757-8981",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/1205/1/012016"
}