Influence of activator type and slag volume fraction on properties of alkali-activated slag pastes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU146784" target="_blank" >RIV/00216305:26310/22:PU146784 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1742-6596/2341/1/012013" target="_blank" >https://iopscience.iop.org/article/10.1088/1742-6596/2341/1/012013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/2341/1/012013" target="_blank" >10.1088/1742-6596/2341/1/012013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of activator type and slag volume fraction on properties of alkali-activated slag pastes

Popis výsledku v původním jazyce

Alkali-activated systems belong to the group of alternative inorganic binders in which the binder properties are dictated by both the aluminosilicate precursor and alkaline activator. In this work, blast furnace slag and three different alkaline activators, namely sodium hydroxide, sodium water glass, and sodium carbonate, were selected. An innovative mixture design based on the same concentration of alkali (Na+) of 4 mol/dm3 for all activators and different volume fractions of slag in pastes, ranging from 0.44 to 0.54, was investigated by the flow table test, compressive and flexural strength test, and by a shrinkage test under autogenous conditions. Great differences for various activators for all investigated parameters were obtained. The highest fluidity, regardless of volume fraction of the slag, was observed for the water glass, originating from a greatly decreased yield stress compared to the two other activators. The type of activator and the volume fraction of the slag also played a crucial role in the development of shrinkage and strength.

Název v anglickém jazyce

Influence of activator type and slag volume fraction on properties of alkali-activated slag pastes

Popis výsledku anglicky

Alkali-activated systems belong to the group of alternative inorganic binders in which the binder properties are dictated by both the aluminosilicate precursor and alkaline activator. In this work, blast furnace slag and three different alkaline activators, namely sodium hydroxide, sodium water glass, and sodium carbonate, were selected. An innovative mixture design based on the same concentration of alkali (Na+) of 4 mol/dm3 for all activators and different volume fractions of slag in pastes, ranging from 0.44 to 0.54, was investigated by the flow table test, compressive and flexural strength test, and by a shrinkage test under autogenous conditions. Great differences for various activators for all investigated parameters were obtained. The highest fluidity, regardless of volume fraction of the slag, was observed for the water glass, originating from a greatly decreased yield stress compared to the two other activators. The type of activator and the volume fraction of the slag also played a crucial role in the development of shrinkage and strength.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA22-02098S" target="_blank" >GA22-02098S: Experimentální analýza procesu smršťování, dotvarování a vzniku trhlin materiálů na bázi alkalicky aktivované strusky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

25th International Conference Building Materials, Products and Technologies, ICBMPT 2022

ISBN

—

ISSN

1742-6588

e-ISSN

1742-6596

Počet stran výsledku

8

Strana od-do

„“-„“

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Telč

Datum konání akce

7. 6. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—