Sustainable polymer-based Phase Change Materials for energy efficiency in buildings and their application in aerial lime mortars

• Published in: Construction & building materials Vol. 231; p. 117149
• Main Authors: Frigione, M., Lettieri, M., Sarcinella, A., Barroso de Aguiar, J.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 20-01-2020; Elsevier 1
• Subjects: Aerial lime-based mortars; Engenharia Civil; Engenharia dos Materiais; Engenharia e Tecnologia; Form-stable method; Latent-heat; Mechanical properties; Phase Change Material (PCM); Science & Technology; Sustainable materials for buildings; Mechanical properties; Phase Change Material (PCM); Sustainable materials for buildings; Latent-heat; Aerial lime-based mortars; Form-stable method
• ISSN: 0950-0618; 1879-0526
• DOI: 10.1016/j.conbuildmat.2019.117149

•Sustainable low toxic form-stable PEG/waste Lecce stone PCM were produced.•The Thermal Energy Storage capacity of produced PCMs was investigated.•Different analyses confirmed that LS/PEG PCMs possess appropriate LHTES properties.•The produced PCM were incorporated in aerial lime-based mortars.
An experimental study aimed at investigating the possibility to produce a Phase Change Material (PCM) for mortars by incorporating through the “form-stable method” a thermoplastic low-melting polymer (PEG 1000) into a porous inert substrate (i.e., Lecce Stone), obtained as residue from processing stone, is reported. The viscosity of pure PEG at different temperatures was first assessed to identify an appropriate processing temperature to introduce fluid PEG into the pores of the stone. A complete (chemical, thermal and morphological) characterization was performed on the developed PCM composites, varying the impregnation times. Aerial lime-based mortars were produced with the addition of the selected experimental PCM composite, taking as comparison the mortar containing only the stone as inert aggregate. On the different mortars, mechanical tests were performed in both compression and bending mode and the thermal conductivity was measured.