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    Papers in International JournalsChapters/ Papers in International BooksChapters/ Papers in National BooksCommunications in International ConferencesCommunications in National ConferencesMSc ThesesBooksProceedingsPatentsTechnical/ Scientific ReportsPhD Theses
    @JournalArticle {2780,
    	title = {Comportamento t{\'e}rmico de argamassas com incorpora{\c c}{\~a}o de Materiais de Mudan{\c c}a de Fase (PCM) no clima portugu{\^e}s},
    	journal = {Revista Mat{\'e}rio - Rio de Janeiro},
    	volume = {22},
    	year = {2017},
    	month = {2017-03-21 00:00:00},
    	abstract = {

    Atualmente, os elevados consumos energ{\'e}ticos constituem uma das maiores preocupa{\c c}{\~o}es da sociedade e da\ comunidade cient{\'\i}fica. A Uni{\~a}o Europeia definiu v{\'a}rias estrat{\'e}gias para atenuar este problema at{\'e} 2020, passando\ pela redu{\c c}{\~a}o das emiss{\~o}es de CO2, redu{\c c}{\~a}o do consumo de energia prim{\'a}ria e aumento do consumo de\ energia proveniente de fontes renov{\'a}veis. O sector da constru{\c c}{\~a}o {\'e} respons{\'a}vel por elevados consumos energ{\'e}ticos\ durante a fase de constru{\c c}{\~a}o e utiliza{\c c}{\~a}o dos edif{\'\i}cios. Assim, torna-se importante utilizar solu{\c c}{\~o}es\ construtivas funcionais, que minimizem os consumos energ{\'e}ticos nos edif{\'\i}cios. A incorpora{\c c}{\~a}o de materiais\ de mudan{\c c}a de fase (PCM) em materiais de constru{\c c}{\~a}o permite a regula{\c c}{\~a}o da temperatura no interior dos\ edif{\'\i}cios com recurso {\`a} sua capacidade de armazenamento e liberta{\c c}{\~a}o de energia. Desta forma, o principal\ objetivo deste estudo consistiu na caracteriza{\c c}{\~a}o do desempenho t{\'e}rmico de argamassas com incorpora{\c c}{\~a}o de\ microc{\'a}psulas de PCM e compara{\c c}{\~a}o com argamassas de refer{\^e}ncia (0\% PCM). Para tal, foram desenvolvidas\ 8 composi{\c c}{\~o}es distintas, {\`a} base de diferentes ligantes, sendo estes a cal a{\'e}rea, cal hidr{\'a}ulica, cimento e\ gesso. Para cada ligante foi desenvolvida uma composi{\c c}{\~a}o de refer{\^e}ncia (0\% PCM) e uma composi{\c c}{\~a}o com\ incorpora{\c c}{\~a}o de 40\% de PCM, em substitui{\c c}{\~a}o da massa de agregado. As propriedades avaliadas foram a\ trabalhabilidade, microestrutura, comportamento mec{\^a}nico e desempenho t{\'e}rmico. Foi poss{\'\i}vel observar que\ a utiliza{\c c}{\~a}o de microc{\'a}psulas de PCM em argamassas contribui para uma melhoria da efici{\^e}ncia energ{\'e}tica\ dos edif{\'\i}cios, atrav{\'e}s da diminui{\c c}{\~a}o das temperaturas extremas, do desfasamento temporal das temperaturas\ extremas e da diminui{\c c}{\~a}o das necessidades de climatiza{\c c}{\~a}o dos edif{\'\i}cios.

    }, keywords = {Argamassas, Comportamento t{\'e}rmico, Material de mudan{\c c}a de fase, Microestrutura}, issn = {1517-7076}, doi = {10.1590/S1517-707620170004.0223}, author = {Cunha, S. and Aguiar, J. B. and Tadeu, A.} }

    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 24 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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    Centro de Território, Ambiente e Construção
    Escola de Engenharia da Universidade do Minho
    Campus de Azurém
    4800-058 Guimarães, Portugal

    Phone: + 351 253 510 200 (517 206)
    Fax: + 351 253 510 217

    Email: geral@ctac.uminho.pt


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