Publication result detail

Rheological properties and microstructure of binary waste red brick powder /metakaolin geopolymer

ROVNANÍK, P.; ROVNANÍKOVÁ, P.; VYŠVAŘIL, M.; GRZESZCZYK, S.; JANOWSKA-RENKAS, E.

Original Title

Rheological properties and microstructure of binary waste red brick powder /metakaolin geopolymer

English Title

Rheological properties and microstructure of binary waste red brick powder /metakaolin geopolymer

Type

WoS Article

Original Abstract

Waste brick powder is a material with sufficient pozzolanic properties to be used as a supplementary cementing material in Portland cement-based concrete or as a precursor for the production of geopolymers. This study aimed to investigate a binary geopolymer system composed of metakaolin (MK), waste red brick (WRB) powder and sodium silicate solution as an alkaline activator. Five different mixtures were prepared where 0, 25, 50, 75, and 100% of the MK was substituted with WRB. The rheological parameters of the fresh pastes were correlated with a structural evaluation of the reaction process. The findings showed that the yield stress of all mixtures was very low, but it increased with time as the geopolymerization reaction proceeded. The more MK was used in the mixture, the faster the yield stress developed. On the other hand, the plastic viscosity strongly depended on the composition of the mixtures and dropped with increasing WRB/MK ratio. The mixtures containing more than 50% MK exhibited a decrease in viscosity with time due to higher reactivity and the faster dissolution of the MK particles.

English abstract

Waste brick powder is a material with sufficient pozzolanic properties to be used as a supplementary cementing material in Portland cement-based concrete or as a precursor for the production of geopolymers. This study aimed to investigate a binary geopolymer system composed of metakaolin (MK), waste red brick (WRB) powder and sodium silicate solution as an alkaline activator. Five different mixtures were prepared where 0, 25, 50, 75, and 100% of the MK was substituted with WRB. The rheological parameters of the fresh pastes were correlated with a structural evaluation of the reaction process. The findings showed that the yield stress of all mixtures was very low, but it increased with time as the geopolymerization reaction proceeded. The more MK was used in the mixture, the faster the yield stress developed. On the other hand, the plastic viscosity strongly depended on the composition of the mixtures and dropped with increasing WRB/MK ratio. The mixtures containing more than 50% MK exhibited a decrease in viscosity with time due to higher reactivity and the faster dissolution of the MK particles.

Keywords

waste brick powder; metakaolin; geopolymer; rheology; mechanical properties; IR spectroscopy; NMR spectroscopy

Key words in English

waste brick powder; metakaolin; geopolymer; rheology; mechanical properties; IR spectroscopy; NMR spectroscopy

Authors

ROVNANÍK, P.; ROVNANÍKOVÁ, P.; VYŠVAŘIL, M.; GRZESZCZYK, S.; JANOWSKA-RENKAS, E.

RIV year

2019

Released

01.09.2018

Publisher

Elsevier

Location

Spojené království Velké Británie a Severního Irska

ISBN

0950-0618

Periodical

Construction and Building Materials

Volume

188

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

924

Pages to

933

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0950061818320907

BibTex

@article{BUT149524,
  author="Pavel {Rovnaník} and Pavla {Rovnaníková} and Martin {Vyšvařil} and Stefania {Grzeszczyk} and Elizbieta {Janowska-Renkas}",
  title="Rheological properties and microstructure of binary waste red brick powder /metakaolin geopolymer",
  journal="Construction and Building Materials",
  year="2018",
  volume="188",
  number="1",
  pages="924--933",
  doi="10.1016/j.conbuildmat.2018.08.150",
  issn="0950-0618",
  url="https://www.sciencedirect.com/science/article/pii/S0950061818320907"
}

Documents

ViewPageProof_JCBM_13788
UT000447579600081_clanek_JCBM_13788