Preparation and Mechanical Properties of Potassium Metakaolin Based Geopolymer Paste

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F19%3A00006252" target="_blank" >RIV/46747885:24210/19:00006252 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.4028/www.scientific.net/AEF.31.38" target="_blank" >https://doi.org/10.4028/www.scientific.net/AEF.31.38</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AEF.31.38" target="_blank" >10.4028/www.scientific.net/AEF.31.38</a>

Result language

angličtina

Original language name

Preparation and Mechanical Properties of Potassium Metakaolin Based Geopolymer Paste

Original language description

In this study, geopolymer samples were prepared by mixing metakaolin (MA) with activator solution made of potassium alkali silicate solution, potassium hydroxide flakes, and additional water. The aim of the experiment is to evaluate the mechanical strength of hardened samples based on four test variables including the SiO2/K2O molar ratios, K2O concentration, H2O/MA water coefficient, and curing temperature. The results reveal that K2O concentration and H2O/MA water coefficient impact strongly on the compressive strength, whereas varying of SiO2/K2O molar ratios in the range from 1.0 – 1.4 does not significantly change the compressive strength of geopolymer samples. On the other hand, high-temperature curing leads to higher mechanical strength of the samples in the early-age compared to curing at room temperature, due to the faster establishment of hard structure in the early-age of geo-polymerization process. However, curing at a temperature range of 80°C – 100°C contributes the non-linear strength development of the samples over the time.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/VI20172019055" target="_blank" >VI20172019055: Application of geopolymer composites as fire barriers</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Name of the periodical

Advanced Engineering Forum

ISSN

2234-991X

e-ISSN

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Volume of the periodical

31

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

8

Pages from-to

38-45

UT code for WoS article

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EID of the result in the Scopus database

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