Publication detail

Effect of polymer admixtures on metakaolin-based geopolymer

MIKHAILOVA, O. ROVNANÍK, P.

Original Title

Effect of polymer admixtures on metakaolin-based geopolymer

Type

conference paper

Language

English

Original Abstract

Geopolymers are presented in many studies as binders alternative to ordinary Portland cement. Several inorganic materials have been used as raw materials for the production of geopolymers. One of them is metakaolin which is produced by dehydroxylation of kaolin. Metakaolin has a much larger surface area than cement, resulting in an increase in water demand to maintain workability. Polymer admixtures may contribute to reduction of this demand. However, another problem should be considered: plasticizers which improve rheological properties in cement technology are not effective for geopolymers. The aim of this study was to analyze the effect of different polymer admixtures on the compressive and flexural strength, pore size distribution and microstructure of alkali-activated metakaolin material. The results revealed that a maximum compressive strength of 18.6 MPa was achieved by adding 1.5% of VINNAPAS 7016 F, and a maximum flexural strength of 2.2 MPa when adding 0.5 or 1% of the same polymer admixture.

Keywords

geopolymer; metakaolin; polymers; compressive strength; flexural strength

Authors

MIKHAILOVA, O.; ROVNANÍK, P.

Released

11. 8. 2016

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

9783038357407

Book

14th International Conference Silicate Binders, ICBM 2015

ISBN

0255-5476

Periodical

Materials Science Forum

Year of study

865

Number

1

State

Swiss Confederation

Pages from

67

Pages to

71

Pages count

6

URL

http://www.scientific.net/MSF.865.67

BibTex

@inproceedings{BUT128934,
  author="Olesia {Mikhailova} and Pavel {Rovnaník}",
  title="Effect of polymer admixtures on metakaolin-based geopolymer",
  booktitle="14th International Conference Silicate Binders, ICBM 2015",
  year="2016",
  journal="Materials Science Forum",
  volume="865",
  number="1",
  pages="67--71",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/MSF.865.67",
  isbn="9783038357407",
  issn="0255-5476",
  url="http://www.scientific.net/MSF.865.67"
}