Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions
The widespread application of innovative thermal enhanced façade solutions requires an adequate durability evaluation. The present work intends to assess the durability of a new aerogel cement-based rendering system through the adaptation of different accelerated aging cycles, such as heating–freezi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/18/5413 |
| _version_ | 1797518364092923904 |
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| author | Joana Maia Marco Pedroso Nuno M. M. Ramos Inês Flores-Colen Pedro F. Pereira Luís Silva |
| author_facet | Joana Maia Marco Pedroso Nuno M. M. Ramos Inês Flores-Colen Pedro F. Pereira Luís Silva |
| author_sort | Joana Maia |
| collection | DOAJ |
| description | The widespread application of innovative thermal enhanced façade solutions requires an adequate durability evaluation. The present work intends to assess the durability of a new aerogel cement-based rendering system through the adaptation of different accelerated aging cycles, such as heating–freezing, freeze–thawing, and heat–cold. Several mechanical properties and also capillary and liquid water absorptions were tested for uncoated and coated specimens. A decrease in the mechanical strength, especially after freeze–thaw cycles, was observed. However, the water action promoted the late hydration of the cement paste contributing to the densification of the matrix and, consequently, the increase of the adhesive strength. Additionally, a decrease in the dynamic modulus of elasticity and an increase in the Poisson’s ratio were observed after aging, which indicates a higher capacity of the render to adapt to substrate movements, contributing to a reduction of cracking. |
| first_indexed | 2024-03-10T07:28:51Z |
| format | Article |
| id | doaj.art-42560a3eb98a481586156b28d050f39f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T07:28:51Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-42560a3eb98a481586156b28d050f39f2023-11-22T14:03:38ZengMDPI AGMaterials1996-19442021-09-011418541310.3390/ma14185413Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging ConditionsJoana Maia0Marco Pedroso1Nuno M. M. Ramos2Inês Flores-Colen3Pedro F. Pereira4Luís Silva5Institute of R&D in Structures and Construction (CONSTRUCT), Laboratory of Building Physics (LFC), Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, PortugalCERIS, Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico (IST), Universidade de Lisboa (UL), 1049-001 Lisboa, PortugalInstitute of R&D in Structures and Construction (CONSTRUCT), Laboratory of Building Physics (LFC), Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, PortugalCERIS, Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico (IST), Universidade de Lisboa (UL), 1049-001 Lisboa, PortugalInstitute of R&D in Structures and Construction (CONSTRUCT), Laboratory of Building Physics (LFC), Faculty of Engineering (FEUP), University of Porto, 4200-465 Porto, PortugalSaint-Gobain Weber, 3800-055 Aveiro, PortugalThe widespread application of innovative thermal enhanced façade solutions requires an adequate durability evaluation. The present work intends to assess the durability of a new aerogel cement-based rendering system through the adaptation of different accelerated aging cycles, such as heating–freezing, freeze–thawing, and heat–cold. Several mechanical properties and also capillary and liquid water absorptions were tested for uncoated and coated specimens. A decrease in the mechanical strength, especially after freeze–thaw cycles, was observed. However, the water action promoted the late hydration of the cement paste contributing to the densification of the matrix and, consequently, the increase of the adhesive strength. Additionally, a decrease in the dynamic modulus of elasticity and an increase in the Poisson’s ratio were observed after aging, which indicates a higher capacity of the render to adapt to substrate movements, contributing to a reduction of cracking.https://www.mdpi.com/1996-1944/14/18/5413aerogelcement-based mortarthermal renderdurabilityaccelerated agingexperimental test |
| spellingShingle | Joana Maia Marco Pedroso Nuno M. M. Ramos Inês Flores-Colen Pedro F. Pereira Luís Silva Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions Materials aerogel cement-based mortar thermal render durability accelerated aging experimental test |
| title | Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions |
| title_full | Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions |
| title_fullStr | Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions |
| title_full_unstemmed | Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions |
| title_short | Durability of a New Thermal Aerogel-Based Rendering System under Distinct Accelerated Aging Conditions |
| title_sort | durability of a new thermal aerogel based rendering system under distinct accelerated aging conditions |
| topic | aerogel cement-based mortar thermal render durability accelerated aging experimental test |
| url | https://www.mdpi.com/1996-1944/14/18/5413 |
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