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VYŠVAŘIL, M. VEJMELKOVÁ, E. ROVNANÍKOVÁ, P.
Original Title
Rheological and mechanical properties of alkali-activated brick powder based pastes: effect of amount of alkali activator
Type
conference paper
Language
English
Original Abstract
The rheological behaviour and mechanical properties of alkali-activated materials prepared by activation of a brick powder by alkaline solution (alkali + water glass) is presented in this paper. The effect of quantity of alkaline activator on the rheological and mechanical properties of brick pastes prepared from two types of brick dust was monitored. The rheological investigation included the characterization of flow properties and viscoelastic properties of the fresh mixtures. Compression and bending strengths were determined at 7, 28, 56 and 90 days. These materials have a low yield stress and a high viscosity strongly influenced by the amount of alkali activator. The fresh brick pastes become liquid more easily with increasing amount of alkali activator. The rising amount of alkali activator leads to a decrease of the material cohesion. The results of rheological and mechanical properties investigation showed considerable differences in behaviour of particular types of brick dust.
Keywords
brick powder; alkaline activation; rheology; yield stress; viscosity; strength; geopolymerization
Authors
VYŠVAŘIL, M.; VEJMELKOVÁ, E.; ROVNANÍKOVÁ, P.
Released
12. 7. 2018
Publisher
IOP Publishing
ISBN
1757-8981
Periodical
IOP Conference Series: Materials Science and Engineering
Year of study
379
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
Pages to
8
Pages count
URL
http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012011
Full text in the Digital Library
http://hdl.handle.net/11012/137356
BibTex
@inproceedings{BUT148887, author="Martin {Vyšvařil} and Eva {Vejmelková} and Pavla {Rovnaníková}", title="Rheological and mechanical properties of alkali-activated brick powder based pastes: effect of amount of alkali activator", booktitle="International Conference Building Materials, Product and Technologies", year="2018", journal="IOP Conference Series: Materials Science and Engineering", volume="379", number="1", pages="1--8", publisher="IOP Publishing", doi="10.1088/1757-899X/379/1/012011", issn="1757-8981", url="http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012011" }