ABSTRACT
Nowadays, the high energetic consumption is one of the biggest concerns of the modern society and scientific community. The European Union defined strategies for 2020 in order to reduce this problem, through the decrease of CO2 emissions, decrease the primary energy consumption and increase the energy consumption from renewable sources. The construction sector is responsible for high energetic consumptions during the production and utilization of buildings. Thus, it becomes important to use constructive solutions that allow minimize the energy consumption in buildings. The incorporation of phase change materials (PCM) in construction materials allows regulate the temperature inside the buildings, due to their capability of storage and release energy. The main objective of this study was to characterize the thermal performance of mortars with incorporation of PCM microcapsules. It were developed 8 different compositions based in different binders. The studied binders were aerial lime, hydraulic lime, cement and gypsum. For each binder a reference mortar (0% PCM) and a mortar with incorporation of 40% of PCM were developed. It was evaluated properties such as workability, microstructure, mechanical and thermal performance. It was possible to observe that the incorporation of PCM microcapsules in mortars effectively contributes to improving the energy efficiency of buildings, through the decrease of extreme temperatures, lag time delay of extreme temperatures and decrease of climatization needs of the buildings.
Keywords:
Mortars; phase change materials; microstructure; thermal performance
