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VYŠVAŘIL, M. HEGROVÁ, M. ŽIŽLAVSKÝ, T.
Original Title
Rheological Properties of Lime Mortars with Guar Gum Derivatives
Type
conference paper
Language
English
Original Abstract
In this paper, the behaviour of fresh lime mortars modified by etherified derivatives of guar (hydroxypropyl guar (HPG), carboxymethyl hydroxypropyl guar (CMHPG) and native guar gum (GG)) is assessed with the purpose of exploring a new application of such derivatives as lime mortar admixtures. The rheological parameters (relative yield stress, consistency coefficient and fluidity index) and viscoelastic properties were correlated with flow table tests, relative density measurements, water retention abilities of mortars and air content in mortars. Results were seen to be strongly dependent on substituents of the guar. Non-ionic derivative (HPG) exhibited the biggest impact on the yield stress and elastic properties of the mortars. The ionic CMHPG showed the thickening effect. GG had low impact on water retention, while HPG and CMHPG displayed high water retention capability.
Keywords
rheology; lime mortar;, guar gum; water retention; air content; yield stress; viscosity
Authors
VYŠVAŘIL, M.; HEGROVÁ, M.; ŽIŽLAVSKÝ, T.
Released
15. 1. 2018
ISBN
978-3-0357-1240-7
Book
Special Concrete and Composites 2017
1013-9826
Periodical
Key Engineering Materials (print)
Number
760
State
Swiss Confederation
Pages from
257
Pages to
265
Pages count
9
BibTex
@inproceedings{BUT144009, author="Martin {Vyšvařil} and Michaela {Hegrová} and Tomáš {Žižlavský}", title="Rheological Properties of Lime Mortars with Guar Gum Derivatives", booktitle="Special Concrete and Composites 2017", year="2018", journal="Key Engineering Materials (print)", number="760", pages="257--265", doi="10.4028/www.scientific.net/KEM.760.257", isbn="978-3-0357-1240-7", issn="1013-9826" }