Rheological study on influence of hydroxypropyl derivatives of guar gum, cellulose, and chitosan on the properties of natural hydraulic lime pastes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU132995" target="_blank" >RIV/00216305:26110/19:PU132995 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1757-899X/583/1/012009" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/583/1/012009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/583/1/012009" target="_blank" >10.1088/1757-899X/583/1/012009</a>

Result language
angličtina
Original language name
Rheological study on influence of hydroxypropyl derivatives of guar gum, cellulose, and chitosan on the properties of natural hydraulic lime pastes
Original language description
Viscosity enhancing admixtures are widely used to improve properties of concrete and ready-mix mortars. Guar gum derivatives and chitosan ethers are reported to have water-retaining effect, which is beneficial for the adhesion of the mixture as well as for the hydratation of hydraulic particles in the binder phase of concrete or natural hydraulic lime (NHL) mortars. Influence of addition of admixtures in doses of 1, 5, and 10‰ of the binder weight has been studied on NHL based pastes with constant water:binder ratio. The measurements were carried out on the Discovery HR-1 rheometer with DIN concentric cylinders geometry. The flow properties and viscoelastic properties were studied on the specified mixtures. Pastes expressed shear-thinning behaviour with thixotropic character of flow curves. Admixture addition caused increase of yield stress, fluidity index and consistency coefficient varying on the amount and type of the admixture. Differences in the effectivity of admixtures were observed, the dosage-dependency of the admixtures varied.
Czech name
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Czech description
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Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
International Conference Building Materials, Products and Technologies
ISBN
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ISSN
1757-8981
e-ISSN
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Number of pages
7
Pages from-to
1-7
Publisher name
IOP Publishing
Place of publication
Neuveden
Event location
Lednice
Event date
Jun 4, 2019
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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