Experimental study of thermo-chemical behaviour of gypsum based material under standard ISO 834 fire condition

In this paper, the main properties of plaster board are experimentally described (□type plaster) under high temperature (ISO 834). Material temperature versus time and main space direction (1D description along the thickness) is presented and analysed. The temperature distribution in the cold convec...

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Bibliographic Details
Published in:European journal of environmental and civil engineering 2010-05, Vol.14 (5), p.561-577
Main Authors: Mélinge, Yannick, Nguyen, Khanh Son, Lanos, Christophe
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Civil Engineering
Engineering Sciences
Exact sciences and technology
hautes températures
high temperature
Lime. Gypsum plaster. Plaster elements
Materials
matériau à chaleur latente
mineral material with large latent heat
panneaux de plâtre
plaster board
propriétés thermique et chimique
thermal and chemical properties
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Summary:In this paper, the main properties of plaster board are experimentally described (□type plaster) under high temperature (ISO 834). Material temperature versus time and main space direction (1D description along the thickness) is presented and analysed. The temperature distribution in the cold convection zone is analysed too. The mass loss under temperature increase is then presented and the radiative thermal flux too. Such research work gives some particular data to improve the accuracy of a combined thermal-chemical numerical model used with large latent heat mineral material. Plaster boards are usually used for passive fire protection. The kinetic chemical conversion is also estimated and an evaluation of the thermal exchange coefficients on the cold face is proposed.
ISSN:1964-8189
2116-7214
DOI:10.1080/19648189.2010.9693247