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    Argamassas funcionais para uma construção sustentável

    TitleArgamassas funcionais para uma construção sustentável
    Publication TypePhD Theses
    Year of Publication2011
    AuthorsLucas S., Ferreira V. M., and Aguiar, J. B.
    Secondary TitleDoutoramento em Engenharia Civil
    Number of Pages274
    Date Published2011-11-02
    UniversityUniversidade de Aveiro
    KeywordsArgamassas, Materiais de construção, Nanomateriais, Sustentabilidade
    Abstract

    The commitment to sustainability has led the construction market to seek new technical solutions and new materials, which, by being more efficient, are able to meet the increasingly demanding requirements of this sector. Applying the concepts of sustainability cannot be restricted to new projects, must also provide solutions for the renovation and rehabilitation of old buildings. Consequently, developing new materials should include all these aspects of use. This work had developed mortars (prepared with different binders: lime, cement and gypsum) having new functionalities, which improve the sustainability of buildings, through the incorporation of nanomaterials for latent heat storage and removal of indoor air pollutants. It has been studied, not only the impact of the nanoparticles incorporation in the fresh and hardened state properties of the mortars, but also its functional performance when integrated inside the mortar matrix. It is possible to obtain mortars with capacity to store latent heat by incorporating a phase change material. This material (PCM), consisting of a mixture of paraffin waxes, can store latent heat and release it later. The compositions tested can be applied in new projects and in old buildings, contributing to reduce energy consumption and improving the interior thermal comfort. By reducing the energy demand, it is possible to an effective impact reduction from the environmental, energy and economic point of view. In addition to the latent heat storage capabilities, it was also developed mortars able to remove indoor air pollutants and simultaneously capable of selfcleaning. It was used nanoparticles of titanium dioxide as photocatalytic additive, and was analyzed the effect of the introduction of this additive in the mortars. The compositions tested exhibited high photocatalytic and selfcleaning performances, without compromising its properties in the hardened state. By applying these mortars as interior coatings, the indoor air quality improves and the use of ventilation systems can be reduced. These functional mortars help to improve the building sustainability, and reduce the economic and environmental impacts throughout the building lifecycle.

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    Statuspublished
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    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 37 researchers holding a PhD of which 27 are faculty professors of the Civil Engineering Department. Read more


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