Thermal behaviour of a gypsum fibre board associated with rigid polyurethane foam under standard fire conditions

被引:4
作者
Le Dreau, Jerome [1 ]
Jensen, Rasmus Lund [1 ]
Kolding, Klaus [2 ]
机构
[1] Aalborg Univ, Dept Civil Engn, Sofiendalsvej 11, DK-9000 Aalborg, Denmark
[2] DC Syst Insulat AS, DK-9600 Aars, Denmark
来源
6TH INTERNATIONAL BUILDING PHYSICS CONFERENCE (IBPC 2015) | 2015年 / 78卷
关键词
Polyurethane; Gypsum fiber; Fire resistance; EN; 1365-1; Heat transfer; Numerical models; Experimental validation; Condensation;
D O I
10.1016/j.egypro.2015.11.615
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Due to its low thermal conductivity (lambda approximate to 20 mW/m.K), rigid polyurethane (PUR) foam has the potential to improve the thermal performance of buildings without increasing the thickness of construction elements. Nevertheless, PUR foam has the drawback of having a low resistance to fire: non-flaming thermal degradation of PUR starts at temperatures about 150-180 degrees C, and flash-ignition around 300 degrees C. Taking advantage of the stable behaviour of gypsum fibre at high temperature, a new panel composed of gypsum fibre and PUR has been developed, with the objective of resisting to fire for 30 minutes. At first, the thermal properties of the different materials at high temperature have been established. Then, a heat transfer model using temperature-dependent thermal properties and apparent specific heat capacity has been developed. Finally, the model has been compared to full-scale test results performed according to EN 1365-1. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码:2736 / 2741
页数:6
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