Effect of polymer admixtures on metakaolin-based geopolymer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU120643" target="_blank" >RIV/00216305:26110/16:PU120643 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scientific.net/MSF.865.67" target="_blank" >http://www.scientific.net/MSF.865.67</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.865.67" target="_blank" >10.4028/www.scientific.net/MSF.865.67</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of polymer admixtures on metakaolin-based geopolymer

Popis výsledku v původním jazyce

Geopolymers are presented in many studies as binders alternative to ordinary Portland cement. Several inorganic materials have been used as raw materials for the production of geopolymers. One of them is metakaolin which is produced by dehydroxylation of kaolin. Metakaolin has a much larger surface area than cement, resulting in an increase in water demand to maintain workability. Polymer admixtures may contribute to reduction of this demand. However, another problem should be considered: plasticizers which improve rheological properties in cement technology are not effective for geopolymers. The aim of this study was to analyze the effect of different polymer admixtures on the compressive and flexural strength, pore size distribution and microstructure of alkali-activated metakaolin material. The results revealed that a maximum compressive strength of 18.6 MPa was achieved by adding 1.5% of VINNAPAS 7016 F, and a maximum flexural strength of 2.2 MPa when adding 0.5 or 1% of the same polymer admixture.

Název v anglickém jazyce

Effect of polymer admixtures on metakaolin-based geopolymer

Popis výsledku anglicky

Geopolymers are presented in many studies as binders alternative to ordinary Portland cement. Several inorganic materials have been used as raw materials for the production of geopolymers. One of them is metakaolin which is produced by dehydroxylation of kaolin. Metakaolin has a much larger surface area than cement, resulting in an increase in water demand to maintain workability. Polymer admixtures may contribute to reduction of this demand. However, another problem should be considered: plasticizers which improve rheological properties in cement technology are not effective for geopolymers. The aim of this study was to analyze the effect of different polymer admixtures on the compressive and flexural strength, pore size distribution and microstructure of alkali-activated metakaolin material. The results revealed that a maximum compressive strength of 18.6 MPa was achieved by adding 1.5% of VINNAPAS 7016 F, and a maximum flexural strength of 2.2 MPa when adding 0.5 or 1% of the same polymer admixture.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/LO1408" target="_blank" >LO1408: AdMaS UP - Pokročilé stavební materiály, konstrukce a technologie</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

14th International Conference Silicate Binders, ICBM 2015

ISBN

9783038357407

ISSN

0255-5476

e-ISSN

—

Počet stran výsledku

6

Strana od-do

67-71

Název nakladatele

Trans Tech Publications

Místo vydání

Switzerland

Místo konání akce

Brno

Datum konání akce

3. 12. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—