Development and Characterization of Thermal Insulation Geopolymer Foams Based on Fly Ash

Michał Łach; Janusz Mikuła; Wei-Ting  Lin; Patrycja Bazan; Beata Figiela; Kinga Korniejenko

doi:10.46604/peti.2020.5291

Authors

Michał Łach Institute of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, Cracow, Poland
Janusz Mikuła Institute of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, Cracow, Poland
Wei-Ting Lin Department of Civil Engineering, National Ilan University, Yilan, Taiwan
Patrycja Bazan Institute of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, Cracow, Poland
Beata Figiela Institute of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, Cracow, Poland
Kinga Korniejenko Institute of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, Cracow, Poland

DOI:

https://doi.org/10.46604/peti.2020.5291

Keywords:

geopolymer, thermal insulation, mechanical properties, inorganic foams

Abstract

The main purpose of the article is to present the differences in the parameters of geopolymer foams obtained in the same way, which is associated with difficulties in controlling the foaming process. Difficulties in controlling the foaming process of geopolymers are the direct reason for the lack of implementation of such materials nowadays. The article shows the results for experimental research, especially research into insulation, physical, and mechanical properties for the designated foamed materials. Microspheres (75%), sand (5%) and fly ash (20%) were used to produce foamed geopolymers. Hydrogen peroxide was the foaming agent. Heat conduction coefficients of 0.08-0.07 W/mK were obtained. The material density was obtained at the level of 363-375 [kg/m³] and the compressive strength was 520-683 [kPa]. The results showed that geopolymers can be a good alternative to conventional insulation materials, but the foaming technology should be developed so that it is stable and allows for reproducible material parameters.

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