THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS
Reinforced geopolymer foams were studied in this work as potential building materials. It has been widely assumed that for a given thermal conductivity [λ - W.m-1.K-1], geopolymer foams can have a lighter density than other materials. The study sought to test this assumption by comparing the thermal...
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doaj-89067deea5e248c58a4e46c067b7ff5d2020-11-25T01:36:17ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472019-09-0163436537310.13168/cs.2019.003210.13168/cs.2019.0032.20191104112547THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMSVan Su Le0Pavlina Hajkova1Kovacic Vladimir2Bakalova Totka3Volensky Lukas4Le Chi Hiep5Ceccon Seifert Kevin6Pereira Peres Amanda7Louda Petr8 Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Faculty of Mechanical Engineering, Department of Material Science, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic Reinforced geopolymer foams were studied in this work as potential building materials. It has been widely assumed that for a given thermal conductivity [λ - W.m-1.K-1], geopolymer foams can have a lighter density than other materials. The study sought to test this assumption by comparing the thermal conductivity between geopolymer foams. The thermal conductivity λ was measured using an ISOMET 2014 device. In all the experiments, the geopolymer foams were obtained by adding aluminium powder and several combinations: silica fume and fine sand reinforced by short basalt fibres. Curing was carried out at room temperature and then in a furnace at 70 °C. After the curing process, the properties of the samples were tested at 7 and 28 days. The results show that the thermal conductivity, porosity, compressive strength, flexural strength and density for all of the tests ranged in the following values: 0.13 - 0.359 W.m-1.K-1; 41.8 - 62.5%; 1.94 - 9 MPa; 0.96 - 2.93 MPa; 546 - 1028 kg /m3, respectively. It was proven that the filler in the geopolymer foams has a significant influence on the mechanical and physical properties of the tested samples. http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1288 geopolymer porosity aluminium powder basalt fibres metakaolin silica fume |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Van Su Le Pavlina Hajkova Kovacic Vladimir Bakalova Totka Volensky Lukas Le Chi Hiep Ceccon Seifert Kevin Pereira Peres Amanda Louda Petr |
spellingShingle |
Van Su Le Pavlina Hajkova Kovacic Vladimir Bakalova Totka Volensky Lukas Le Chi Hiep Ceccon Seifert Kevin Pereira Peres Amanda Louda Petr THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS Ceramics-Silikáty geopolymer porosity aluminium powder basalt fibres metakaolin silica fume |
author_facet |
Van Su Le Pavlina Hajkova Kovacic Vladimir Bakalova Totka Volensky Lukas Le Chi Hiep Ceccon Seifert Kevin Pereira Peres Amanda Louda Petr |
author_sort |
Van Su Le |
title |
THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS |
title_short |
THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS |
title_full |
THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS |
title_fullStr |
THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS |
title_full_unstemmed |
THERMAL CONDUCTIVITY OF REINFORCED GEOPOLYMER FOAMS |
title_sort |
thermal conductivity of reinforced geopolymer foams |
publisher |
University of Chemistry and Technology, Prague |
series |
Ceramics-Silikáty |
issn |
0862-5468 1804-5847 |
publishDate |
2019-09-01 |
description |
Reinforced geopolymer foams were studied in this work as potential building materials. It has been widely assumed that for a given thermal conductivity [λ - W.m-1.K-1], geopolymer foams can have a lighter density than other materials. The study sought to test this assumption by comparing the thermal conductivity between geopolymer foams. The thermal conductivity λ was measured using an ISOMET 2014 device. In all the experiments, the geopolymer foams were obtained by adding aluminium powder and several combinations: silica fume and fine sand reinforced by short basalt fibres. Curing was carried out at room temperature and then in a furnace at 70 °C. After the curing process, the properties of the samples were tested at 7 and 28 days. The results show that the thermal conductivity, porosity, compressive strength, flexural strength and density for all of the tests ranged in the following values: 0.13 - 0.359 W.m-1.K-1; 41.8 - 62.5%; 1.94 - 9 MPa; 0.96 - 2.93 MPa; 546 - 1028 kg /m3, respectively. It was proven that the filler in the geopolymer foams has a significant influence on the mechanical and physical properties of the tested samples. |
topic |
geopolymer porosity aluminium powder basalt fibres metakaolin silica fume |
url |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1288
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