Kaolinite Claystone-Based Geopolymer Materials: Effect of Chemical Composition and Curing Conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F18%3AN0000002" target="_blank" >RIV/62243136:_____/18:N0000002 - isvavai.cz</a>

Result on the web

<a href="http://www.mdpi.com/2075-163X/8/10/444/pdf" target="_blank" >http://www.mdpi.com/2075-163X/8/10/444/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/min8100444" target="_blank" >10.3390/min8100444</a>

Result language

angličtina

Original language name

Kaolinite Claystone-Based Geopolymer Materials: Effect of Chemical Composition and Curing Conditions

Original language description

This work describes the role of chemical composition and curing conditions on the geopolymer’s strength, leachability of chemical elements and porosity. The study focuses on the geopolmer material prepared from calcined kaolinite claystone, which is not studied frequently as a raw material for the geopolmer production, although it has high application potential as it is easily commercially available and allows preparation of geopolymers with low viscosity. Composition of geopolymers and their curing methods were selected considering their ease of use in the praxis. Therefore the potassium water glass itself was used as alkali activator without any KOH or NaOH addition. Chemical composition was changed only by density of water glass in the range of 1.2 to 1.6 g.cm-3. Geopolymers were cured at temperature within the range from 5°C to 70 °C to speed up the solidification process as well as by microwave radiation. High compressive strengths were obtained for geopolymers with the highest densities of the water glass (1.5 and 1.6 g.cm 3) in dependence on various curing conditions. Higher strengths were achieved in case of samples where the solidification was not accelerated. The samples cured at lower temperatures (5°C) showed lower porosity compared to the other curing types. The lowest leachability of Si and alkalis was reached for the samples with water glass density 1.5 g.cm-3.

Czech name

—

Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/FV10420" target="_blank" >FV10420: Manufacturing technology of geopolymer products</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Minerals

ISSN

2075-163X

e-ISSN

2075-163X

Volume of the periodical

2018

Issue of the periodical within the volume

444

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

1 - 11

UT code for WoS article

000448567300028

EID of the result in the Scopus database

2-s2.0-85056338784