Cellular ceramic foam derived from potassium-based geopolymer composite: Thermal, mechanical and structural properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F21%3A43962277" target="_blank" >RIV/49777513:23640/21:43962277 - isvavai.cz</a>

Alternative codes found

RIV/67985858:_____/21:00559334

Result on the web

<a href="https://doi.org/10.1016/j.matdes.2020.109355" target="_blank" >https://doi.org/10.1016/j.matdes.2020.109355</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matdes.2020.109355" target="_blank" >10.1016/j.matdes.2020.109355</a>

Result language

angličtina

Original language name

Cellular ceramic foam derived from potassium-based geopolymer composite: Thermal, mechanical and structural properties

Original language description

Porous geopolymers have drawn widespread attention owing to the flexibility of the production processes and the diversity of their structural properties. This paper first investigates and describes the key parameters for the fabrication of ceramic foam based on a geopolymer mixture by impregnation using the replica technique. The influence of geopolymer mixture viscosity on total porosity, pore size and mechanical strength of leucite ceramic foams is evaluated. The accelerated solidification step at 70 °C was investigated using time-dependent viscoelastic parameters such as tan δ, G&apos; and G&quot;. For the fabrication of highly porous ceramics based on the geopolymer mixture, the optimum viscosity ranges between 9 and 15 Pa.s at 100 s−1. Differential thermal analysis (DTA) and X-ray diffraction (XRD) indicated the crystallization of the main leucite phase at 1073.5 °C, during the thermal exposure up to 1300 °C. It has been revealed that ceramic foam with an open porosity of 76 to 79 vol% can be fabricated using a replica technique. Scanning electron microscopy (SEM) and X-ray micro-computed tomography (micro-CT) have confirmed interconnected macroporosity with an open pore size up to 2 mm. This study introduces a novel group of materials combining geopolymer chemistry and traditional production of ceramic foams.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20504 - Ceramics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

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

Name of the periodical

MATERIALS &amp; DESIGN

ISSN

0264-1275

e-ISSN

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Volume of the periodical

198

Issue of the periodical within the volume

JAN 15 2021

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

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UT code for WoS article

000606821000001

EID of the result in the Scopus database

2-s2.0-85096826821