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Thermal behavior of an intumescent alkaline aluminosilicate composite material for fire protection of structural elements
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SYSNO ASEP 0496983 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Thermal behavior of an intumescent alkaline aluminosilicate composite material for fire protection of structural elements Author(s) Sotiriadis, Konstantinos (UTAM-F) RID, ORCID, SAI
Guzii, S. (UA)
Mácová, Petra (UTAM-F) RID, SAI, ORCID
Viani, Alberto (UTAM-F) RID, ORCID, SAI
Dvořák, K. (CZ)
Drdácký, Miloš (UTAM-F) RID, SAI, ORCIDNumber of authors 6 Article number 04019058 Source Title Journal of Materials in Civil Engineering. - : American Society of Civil Engineers - ISSN 0899-1561
Roč. 31, č. 6 (2019)Number of pages 9 s. Publication form Print - P Language eng - English Country US - United States Keywords alkaline aluminosilicate materials ; metakaolin ; intumescent coatings ; fire protection ; X-ray micro-computed tomography Subject RIV JN - Civil Engineering OECD category Construction engineering, Municipal and structural engineering R&D Projects GBP105/12/G059 GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UTAM-F - RVO:68378297 UT WOS 000461616400001 EID SCOPUS 85063142428 DOI 10.1061/(ASCE)MT.1943-5533.0002702 Annotation The behavior of a composite material, consisting of metakaolin-based alkaline aluminosilicate binder, granules of the same initial composition used as a swelling agent, and calcium carbonate, was studied during firing in the temperature range 25°C–1,000°C. A combination of techniques was used to investigate its microstructure, composition, and properties. The material developed porosity at 200°C, largely contributed by water loss from the swelling agent, resulting in expansion and decrease in thermal conductivity and mechanical strength. Between 400°C and 800°C the thermal insulation characteristics further improved. At 1,000°C, crystallization of new phases with a decrease in the amorphous content produced a small contraction and increased thermal conductivity and mechanical strength. The material exhibited good stability with appropriate characteristics for use as intumescent coating for fire protection of structural elements. Modification of the binder:granules ratio may allow producing composites for specific applications. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2019 Electronic address https://doi.org/10.1061/(ASCE)MT.1943-5533.0002702
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