Effectiveness of common water-reducing admixtures in alkali-activated slag pastes with different types of activator

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F21%3APU143044" target="_blank" >RIV/00216305:26310/21:PU143044 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1757-899X/1205/1/012001" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/1205/1/012001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/1205/1/012001" target="_blank" >10.1088/1757-899X/1205/1/012001</a>

Result language
angličtina
Original language name
Effectiveness of common water-reducing admixtures in alkali-activated slag pastes with different types of activator
Original language description
Rheology of alkali-activated slag (AAS) is a very complex issue, where the activator nature as well as its dose play an important role. Moreover, the use of water-reducing admixtures in these systems is an issue, as they often do not work properly. This could be attributed to the high pH as well as to the surface chemistry of AAS. Therefore, lignosulfonate-, polynaphthalene- and polycarboxylate-based superplasticizers were used to modify AAS pastes with sodium waterglass, hydroxide and carbonate activator. These pastes were tested using a rotational rheometer in an oscillatory shear mode of increasing shear strain to observe the evolution of viscoelastic moduli and to determine the oscillatory stress corresponding to the linear viscoelastic region limit ("yield point") and to the crossover point, where the storage modulus equals the loss modulus ("flow point"). In most cases, the used plasticizers did not improve the rheological properties; the only exception was the lignosulfonate one in sodium hydroxide-activated slag.
Czech name
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Czech description
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Project
<a href="/en/project/GA20-26896S" target="_blank" >GA20-26896S: Towards the organic admixtures tailoring for alkali-activated slag-based systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
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 (ICBMPT 2021)
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
Telč
Event date
Sep 29, 2021
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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