Development of plaster foam for thermal and acoustic applications. (30th November 2020)

• Record Type: Journal Article
• Authors: Arroyo, F.N.; Christoforo, A.L.; Salvini, V.R.; Pelissari, P.I.B.G.B.; Pandolfelli, V.C.; Luz, A.P.; Cardoso, C.A.
• Is Part Of: Construction & building materials. Volume 262(2021)
• Publication Date: 2020-11-30
• Subjects: Mechanical Properties -- Thermal Properties -- Acoustic Properties -- Regression Models; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.120800
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Microsilica increase mechanical properties without affect acoustic properties. Higher microsilica percentage, impact in a porosity smaller. With 5% of microsilica, better is the thermal conductivity. It is possible to obtain a 87.85% of porosity with 0.20% of microsilica. Abstract: Gypsum is an ancient material of great abundance that can be used as acoustic and thermal insulation protection in civil construction, especially when water-based foam is added to it, improving these properties. This research presents gypsum foam processing using a direct casting method with additives from natural sources, thus avoiding environment degradation. The results showed that gypsum foam has a potential for thermal and acoustic insulation and is more effective than other materials currently being used. Although, the material mechanical strength decreases when only water-based foam is added, further microsilica (MS) addition improved its mechanical strength without spalling its acoustic absorption and thermal conductivity.