Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
This study was supported by Operational Programme Competitiveness and Internationalization (COMPETE 2020), by FEDER funds through the Regional Operational Programs of Lisbon and of Center (Lisbon 2020, Center 2020) and by national funds through the Portuguese Foundation for Science and Technology (FCT) in the scope of the project SAICT/23349/2016: INDEEd -Indoor air quality regulation through the usage of eco-efficient mortars and project PTDC/EPH-PAT/4684/2014: DB-HERITAGE - Database of building materials with historical and heritage interest. Acknowledgments are due to Aldeias de Pedra, Embarro, Secil Argamassas and Sival Companies for providing the materials and pre-mixed mortars. ; It is important to ensure indoor comfort by passive methods, avoiding mechanical equipment that has energy costs. To assess plasters common efficiency but also its contribution as moisture buffers, five different plastering mortars, including unstabilized and stabilized earth-based plasters, gypsum and cement-based pre-mixed plasters, were analyzed and their chemical, mechanical and hygroscopic characteristics compared. The materials and mortars were analyzed by X-ray diffraction and simultaneous thermal analysis. Linear shrinkage, dry bulk density, dynamic modulus of elasticity, flexural and compressive strengths, dry abrasion resistance, surface cohesion, surface hardness and sorption and desorption of mortars and plasters were also evaluated. The mechanical strength of earthen mortars is lower than gypsum and cement-based mortars. However, earth plasters show the highest hygroscopicity, acting as moisture passive buffers, improving thermal comfort and contributing to occupantś health. ; authorsversion ; published
Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
This study was supported by Operational Programme Competitiveness and Internationalization (COMPETE 2020), by FEDER funds through the Regional Operational Programs of Lisbon and of Center (Lisbon 2020, Center 2020) and by national funds through the Portuguese Foundation for Science and Technology (FCT) in the scope of the project SAICT/23349/2016: INDEEd -Indoor air quality regulation through the usage of eco-efficient mortars and project PTDC/EPH-PAT/4684/2014: DB-HERITAGE - Database of building materials with historical and heritage interest. Acknowledgments are due to Aldeias de Pedra, Embarro, Secil Argamassas and Sival Companies for providing the materials and pre-mixed mortars. ; It is important to ensure indoor comfort by passive methods, avoiding mechanical equipment that has energy costs. To assess plasters common efficiency but also its contribution as moisture buffers, five different plastering mortars, including unstabilized and stabilized earth-based plasters, gypsum and cement-based pre-mixed plasters, were analyzed and their chemical, mechanical and hygroscopic characteristics compared. The materials and mortars were analyzed by X-ray diffraction and simultaneous thermal analysis. Linear shrinkage, dry bulk density, dynamic modulus of elasticity, flexural and compressive strengths, dry abrasion resistance, surface cohesion, surface hardness and sorption and desorption of mortars and plasters were also evaluated. The mechanical strength of earthen mortars is lower than gypsum and cement-based mortars. However, earth plasters show the highest hygroscopicity, acting as moisture passive buffers, improving thermal comfort and contributing to occupantś health. ; authorsversion ; published
Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
Santos, Tânia (Autor:in) / Gomes, Maria Idália (Autor:in) / Santos Silva, António (Autor:in) / Ferraz, Eduardo (Autor:in) / Faria, Paulina (Autor:in) / DEC - Departamento de Engenharia Civil / CERIS - Polo NOVA
10.09.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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