Comparison of thermal properties of foamed geopolymer materials based on fly ash and metakaolin
Authors:
- Agnieszka Bąk,
- Kinga Pławecka,
- Michał Łach
Abstract
The aim of the presented work was to study the insulation properties thermal conductivity coefficient [λ] and specific heat Cp of foamed geopolymer plates. The paper presents the results of tests on geopolymers based on fly ash and metakaolin with the addition of ash microspheres. The geopolymer composites were prepared using hydrogen peroxide H2O2 and stabilizers in the form of Portland cement and surfactant. The curing process of geopolymer foams was carried out at 60°C. The obtained sheets were subjected to thermal conductivity tests in the temperature range 0-20°C, and the specific heat was examined in the range 27.532.5°C. The density results of the tested foamed geopolymer slabs are also presented in this paper, and the visual evaluation and morphology of the porous structure are presented using scanning electron microscopy. As a result, the foamed fly ash-based geopolymer composites were found to have a lambda coefficient value of 0.07 [W/m*K], and their average specific heat over a given temperature range was 1.807 [kJ/kg*K]. The thermal parameters for the metakaolin-based samples are 0.09-0.10 [W/m*K], and their average specific heat is 1.390 [kJ/kg*K]. Based on the test results, it can be concluded that fly ash is a better and more easily controllable base material in the foaming process. The obtained test results allow these materials to be used in construction as insulation materials due to the fact that they have relatively good insulation parameters.
- Record ID
- CUTa363753b7a4342b8abf4a23213e84b31
- Publication categories
- ; ;
- Author
- Pages
- 366-371
- Other elements of collation
- schem.; tab.; wykr.; Bibliografia (na s.) - [370-371]; Oznaczenie streszczenia - Abstr.
- Book
- Barut Murat, Murat Barut Aktaş Nahit, Nahit Aktaş Emlek Alper Alper Emlek [et al.] (eds.): IV. International Turkic World Congress on Science and Engineering TURK-COSE 2022, 23-24 June 2022, Niğde - Türkiye : book of proceedings, 2022, Niğde, Niğde Ömer Halisdemir University, ISBN 978-975-8062-46-1
- Keywords in English
- geopolymer foams, insulation material, thermal properties testin, advanced materials testing methods
- URL
- http://turk-cose.ohu.edu.tr/pdf/22/bookofproceedings.pdf Opening in a new tab
- Related project
- Development of technology for additive production of environmentally friendly and safe insulation materials and able to accumulate heat based on the alkaline activation of anthropogenic raw materials. . Project leader at PK: , ,
Projects financed by NCRD [Projekty finansowane przez NCBiR (NCBR (] - Language
- eng (en) English
- License
- Score (nominal)
- 5
- Score source
- publisherList
- Score
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTa363753b7a4342b8abf4a23213e84b31/
- URN
urn:pkr-prod:CUTa363753b7a4342b8abf4a23213e84b31
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