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Sustainable Mortars with Incorporation of Microencapsulated Phase Change Materials

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Abstract:

The construction industry is responsible for high energy and raw materials consumption. Thus, it is important to minimize the high energy consumption by taking advantage of renewable energy sources and reusing industrial waste, decreasing the extraction of natural materials. The mortars with incorporation of phase change materials (PCM) have the ability to regulate the temperature inside buildings, contributing to the thermal comfort and reduction of the use of heating and cooling equipment, using only the energy supplied by the sun. The simultaneous incorporation of PCM and fly ash (FA) can reduce the energetic consumption and the amount of materials landfilled. However, the addition of these materials in mortars modifies its characteristics. The main purpose of this study was the production and characterization in the fresh and hardened state of mortars with incorporation of different contents of PCM and FA. The binders studied were aerial lime, hydraulic lime, gypsum and cement. The proportion of PCM studied was 0%, 20%, 40% and 60% of the mass of the sand. The content of fly ash added to the mortars was 0%, 20%, 40% and 60% of the mass of the binder. It was possible to observe that the incorporation of PCM and fly ash in mortars caused differences in properties such as workability, microstructure, water absorption, compressive strength, flexural strength and adhesion.

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Periodical:

Advanced Materials Research (Volume 1129)

Pages:

621-628

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1129.621

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Online since:

November 2015

Authors:

Sandra Cunha*, José Aguiar, Kamil Zalegowski, Andrzej Garbacz, Patrícia Soares, Juliana Azevedo, Victor Ferreira, António Tadeu

Keywords:

Fly Ash, Mechanical Properties, Mortar, Phase Change Material, Physical Properties

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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