Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions
The reliable characterization of insulation materials in relevant environmental conditions is crucial, since it strongly influences the performance (e.g., thermal) of building elements. In fact, their properties may vary with the moisture content, temperature, ageing degradation, etc. Therefore, in...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/9/3/241 |
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| author | Ana Dora Rodrigues Pontinha Johanna Mäntyneva Paulo Santos Luísa Durães |
| author_facet | Ana Dora Rodrigues Pontinha Johanna Mäntyneva Paulo Santos Luísa Durães |
| author_sort | Ana Dora Rodrigues Pontinha |
| collection | DOAJ |
| description | The reliable characterization of insulation materials in relevant environmental conditions is crucial, since it strongly influences the performance (e.g., thermal) of building elements. In fact, their properties may vary with the moisture content, temperature, ageing degradation, etc. Therefore, in this work, the thermomechanical behaviour of different materials was compared when subjected to accelerated ageing. Insulation materials that use recycled rubber in their composition were studied, along with others for comparison: heat-pressed rubber, rubber_cork composites, aerogel_rubber composite (developed by the authors), silica aerogel, and extruded polystyrene. The ageing cycles comprised dry-heat, humid-heat, and cold conditions as the stages, during cycles of 3 and 6 weeks. The materials’ properties after ageing were compared with the initial values. Aerogel-based materials showed superinsulation behaviour and good flexibility due to their very high porosity and reinforcement with fibres. Extruded polystyrene also had a low thermal conductivity but exhibited permanent deformation under compression. In general, the ageing conditions led to a very slight increase in the thermal conductivity, which vanished after drying of the samples in an oven, and to a decrease in Young’s moduli. |
| first_indexed | 2024-03-11T06:29:41Z |
| format | Article |
| id | doaj.art-0d096dcbc26943f9a839cce261c21d27 |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-11T06:29:41Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-0d096dcbc26943f9a839cce261c21d272023-11-17T11:15:16ZengMDPI AGGels2310-28612023-03-019324110.3390/gels9030241Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing ConditionsAna Dora Rodrigues Pontinha0Johanna Mäntyneva1Paulo Santos2Luísa Durães3University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3004-531 Coimbra, PortugalHäme University of Applied Sciences, HAMK Tech Research Unit, 13100 Hämeenlinna, FinlandUniversity of Coimbra, ISISE, ARISE, Department of Civil Engineering, 3004-531 Coimbra, PortugalUniversity of Coimbra, CIEPQPF, Department of Chemical Engineering, 3004-531 Coimbra, PortugalThe reliable characterization of insulation materials in relevant environmental conditions is crucial, since it strongly influences the performance (e.g., thermal) of building elements. In fact, their properties may vary with the moisture content, temperature, ageing degradation, etc. Therefore, in this work, the thermomechanical behaviour of different materials was compared when subjected to accelerated ageing. Insulation materials that use recycled rubber in their composition were studied, along with others for comparison: heat-pressed rubber, rubber_cork composites, aerogel_rubber composite (developed by the authors), silica aerogel, and extruded polystyrene. The ageing cycles comprised dry-heat, humid-heat, and cold conditions as the stages, during cycles of 3 and 6 weeks. The materials’ properties after ageing were compared with the initial values. Aerogel-based materials showed superinsulation behaviour and good flexibility due to their very high porosity and reinforcement with fibres. Extruded polystyrene also had a low thermal conductivity but exhibited permanent deformation under compression. In general, the ageing conditions led to a very slight increase in the thermal conductivity, which vanished after drying of the samples in an oven, and to a decrease in Young’s moduli.https://www.mdpi.com/2310-2861/9/3/241thermal insulation materialsperformance assessmentageingthermal conductivityYoung’s modulus |
| spellingShingle | Ana Dora Rodrigues Pontinha Johanna Mäntyneva Paulo Santos Luísa Durães Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions Gels thermal insulation materials performance assessment ageing thermal conductivity Young’s modulus |
| title | Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions |
| title_full | Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions |
| title_fullStr | Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions |
| title_full_unstemmed | Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions |
| title_short | Thermomechanical Performance Assessment of Sustainable Buildings’ Insulating Materials under Accelerated Ageing Conditions |
| title_sort | thermomechanical performance assessment of sustainable buildings insulating materials under accelerated ageing conditions |
| topic | thermal insulation materials performance assessment ageing thermal conductivity Young’s modulus |
| url | https://www.mdpi.com/2310-2861/9/3/241 |
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