Thermal bridges in concrete structures: analysis of the conditions of filamental fungi development
The importance of considering thermal bridges and their impacts on thermal transmittance calculation is an issue that has been discussed in cold season climate regions in Brazil. The presence of vulnerable points on the building envelope may affect thermal performance, besides the implications in th...
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| Main Authors: | , , |
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| 格式: | Online |
| 语言: | eng |
| 出版: |
Universidade Estadual de Campinas
2020
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| 在线阅读: | https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656062 |
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| 总结: | The importance of considering thermal bridges and their impacts on thermal transmittance calculation is an issue that has been discussed in cold season climate regions in Brazil. The presence of vulnerable points on the building envelope may affect thermal performance, besides the implications in the building walls and roofs' compositions, such as the filamentous fungi development. Internationally, it is observed the consideration of this theme in different rules and regulations. This study aims to discuss, through computer simulation, the need for Brazilian performance standards to consider the possibility of filamentous fungi formation in buildings with low and high thermal insulation. The analysis examines the thermo-hygrometric conditions near the building model's reinforced concrete structure where the thermal bridges occur and the surfaces of the vertical masonry enclosures for all facades. The results show a high probability of filamentous fungi growth in thermal bridges when the building is insulated, i.e., with low thermal transmittance. This study also points out that aspects related to the building's occupants, such as the control of natural humidity, can interfere with the indoor air's humidity level and, consequently, favor the formation of filamentous fungi. |
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