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Avaliação experimental do comportamento ao fogo de lajes celulares em madeira com diferentes perfurações

Authors: Meireles, J.M.; Piloto, P.A.G.; Fonseca, E.M.M.; Santos, H.S.; Barreira, Luísa;

Avaliação experimental do comportamento ao fogo de lajes celulares em madeira com diferentes perfurações

Abstract

As lajes em madeira são elementos estruturais com aplicação crescente, em particular na reabilitação de elementos existentes, na adequação de grandes espaços interiores e na construção de novas estruturas. As excelentes propriedades mecânicas, associadas a elevadas propriedades térmicas e acústicas fazem deste material uma solução ideal para lajes de pavimentos e de coberturas. Para avaliação do comportamento ao fogo, foram realizados dois ensaios em lajes celulares (3 células) com diferentes perfurações (pequenos e grandes retângulos). Estas lajes são constituídas por vigas de secção retangular (tricapa casquinha) ligadas a uma armadura (vigas Kerto), com conetores metálicos SIMPSON e painéis de teto e pavimento tricapa casquinha. As lajes foram instrumentadas com termopares tipo K, termopares de discos de cobre para superfície não exposta e termopares de placa para medição da temperatura no compartimento de incêndio e nas células. Foi utilizado um forno de resistência ao fogo, com a prescrição da curva ISO834. Neste trabalho são apresentados os resultados da evolução da temperatura nos painéis perfurados, nas vigas, conetores, superfície não exposta e apresentados resultados da taxa de carbonização de cada célula.

Country
Portugal
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Keywords

Madeira, Laje celular

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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