Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels
Lightweight geopolymers have been researched and used in specific applications due to their differentiated properties and, particularly, due to the lower environmental impacts in their manufacture, mainly associated with the use of raw materials with a low environmental impact and the reduction in g...
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MDPI AG
2023-04-01
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Series: | Minerals |
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Online Access: | https://www.mdpi.com/2075-163X/13/4/542 |
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author | Cleidson Alves Fernando Pelisser João Labrincha Rui Novais |
author_facet | Cleidson Alves Fernando Pelisser João Labrincha Rui Novais |
author_sort | Cleidson Alves |
collection | DOAJ |
description | Lightweight geopolymers have been researched and used in specific applications due to their differentiated properties and, particularly, due to the lower environmental impacts in their manufacture, mainly associated with the use of raw materials with a low environmental impact and the reduction in greenhouse gas emissions. In this study, light geopolymers, using metakaolin, sodium silicate, sodium hydroxide, and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), were evaluated. The effects of H<sub>2</sub>O<sub>2</sub> concentration were evaluated up to a concentration of 1% in pastes and mortars. The properties of thermal conductivity, density, compressive strength, and modulus of elasticity were determined. The simulation of the thermal transmittance of cladding panels applied to a facade was also performed. Mortars with a H<sub>2</sub>O<sub>2</sub> concentration of 0.2% obtained a compressive strength of 18 MPa and thermal conductivity of 0.55 W/mK, which was 60% less than the thermal conductivity obtained for the reference composition. The simulation of a panel for use on a facade showed that the thermal resistance increased from 0.27 (m<sup>2</sup>.K/W) to 0.42 (m<sup>2</sup>.K/W), indicating the efficiency of the geopolymer for use as a thermal control material. |
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issn | 2075-163X |
language | English |
last_indexed | 2024-03-11T04:42:16Z |
publishDate | 2023-04-01 |
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series | Minerals |
spelling | doaj.art-20cce747a75042479ff53d2e3fe993a52023-11-17T20:36:09ZengMDPI AGMinerals2075-163X2023-04-0113454210.3390/min13040542Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar PanelsCleidson Alves0Fernando Pelisser1João Labrincha2Rui Novais3Civil Engineering Department, Federal Institute of Santa Catarina—IFSC, Criciúma 88813-600, SC, BrazilCivil Engineering Department, Federal University of Santa Catarina—UFSC, Florianópolis 88040-900, SC, BrazilDepartment of Materials and Ceramic Engineering/CICECO, Campus Universitario de Santiago, University of Aveiro—UA, 3810-193 Aveiro, PortugalDepartment of Materials and Ceramic Engineering/CICECO, Campus Universitario de Santiago, University of Aveiro—UA, 3810-193 Aveiro, PortugalLightweight geopolymers have been researched and used in specific applications due to their differentiated properties and, particularly, due to the lower environmental impacts in their manufacture, mainly associated with the use of raw materials with a low environmental impact and the reduction in greenhouse gas emissions. In this study, light geopolymers, using metakaolin, sodium silicate, sodium hydroxide, and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), were evaluated. The effects of H<sub>2</sub>O<sub>2</sub> concentration were evaluated up to a concentration of 1% in pastes and mortars. The properties of thermal conductivity, density, compressive strength, and modulus of elasticity were determined. The simulation of the thermal transmittance of cladding panels applied to a facade was also performed. Mortars with a H<sub>2</sub>O<sub>2</sub> concentration of 0.2% obtained a compressive strength of 18 MPa and thermal conductivity of 0.55 W/mK, which was 60% less than the thermal conductivity obtained for the reference composition. The simulation of a panel for use on a facade showed that the thermal resistance increased from 0.27 (m<sup>2</sup>.K/W) to 0.42 (m<sup>2</sup>.K/W), indicating the efficiency of the geopolymer for use as a thermal control material.https://www.mdpi.com/2075-163X/13/4/542lightweight geopolymereco-efficientmortar |
spellingShingle | Cleidson Alves Fernando Pelisser João Labrincha Rui Novais Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels Minerals lightweight geopolymer eco-efficient mortar |
title | Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels |
title_full | Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels |
title_fullStr | Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels |
title_full_unstemmed | Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels |
title_short | Effect of Hydrogen Peroxide on the Thermal and Mechanical Properties of Lightweight Geopolymer Mortar Panels |
title_sort | effect of hydrogen peroxide on the thermal and mechanical properties of lightweight geopolymer mortar panels |
topic | lightweight geopolymer eco-efficient mortar |
url | https://www.mdpi.com/2075-163X/13/4/542 |
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