Argamassas com incorporação direta de Materiais de Mudança de Fase: Avaliação do comportamento a baixas e elevadas temperaturas

Materia

article

Sandra Cunha¹  Marisa Silva¹  José Aguiar¹ 

[1] Universidade do Minho

关键词: Mortars;    Phase Change Materials;    Direct incorporation;    Low temperatures;    High temperatures;   

DOI  :  10.1590/S1517-707620210003.13010

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

Currently, it is necessary to study constructive solutions with good behavior to low and high temperatures exposure, namely that the mortar not completely lose their strength when subjected to different and more demanding temperatures than the operating temperatures. Concerning the knowledge of the phase change materials (PCM) thermal storage capacities, four different compositions based in cement and fly ash were developed inserting different contents of non-encapsulated PCM (0%, 5%, 10% and 20%), by direct incorporation. These compositions were tested to low and high temperatures (-18ºC, 20ºC, 200ºC, 400ºC and 600ºC), through freeze-thaw and compressive and flexural tests. It was possible to conclude that the incorporation of non-encapsulated PCM leads to an improvement of the behavior to the freeze-thaw tests, maintaining an identical behavior to reference mortars when subjected to high temperatures.

【 授权许可】

CC BY