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Harmonisation of Fire Resistance Testing: Thermal Aspects

Objective

By experience it is known that fire resistance furnaces yield deviating results on identical specimens although controlled within current standards. This is the main remaining problem for achieving harmonised fire resistance testing of building products in the EU.

In this project, the technical aspects of the above problem will be quantified and, where possible, solutions will be offered. The specific objectives are to:
investigate the extent to which applying Plate Thermometers to monitor furnace temperature will solve problems of reproducibility;
redesign and evaluate the calibration elements used in previous work;
investigate the reasons why differences in the thermal environment of the furnace have a large effect on the temperature observed at the unexposed side of a separating element.
The initial development work is in progress and the testing phase is expected to begin in November 1997.
Initial work will be carried out to:
redesign the calibration element for tests on building components with a separating function;
design a calibration element for tests on building elements totally engulfed by fire;
investigate the role of furnace construction parameters using a mathematical model of the heat exchange in the furnace;
design a simple, passive heat flux meter and an active heat flux meter for the non-exposed side of test specimens.
Subsequently, 24 resistance to fire tests will be carried out on well defined test specimens with furnace control by the Plate Thermometer.

Coordinator

NEDERLANDSE ORGANISATIE VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO*
Address
5,Lange Kleiweg 5
2600 AA Delft
Netherlands

Participants (10)

Amtliche Materialsprüfungsanstalt fürdas Bauwesen
Germany
Address
52,Beethovenstraße
38106 Braunschweig
BUILDING RESEARCH ESTABLISHMENT LTD
United Kingdom
Address
Bre, B16, Bucknalls Lane
WD2 7JR Garston,watford,herts
Bundesanstalt für Materialforschung und Materialprüfung
Germany
Address
87,Unter Den Eichen
12205 Berlin
CENTRE SCIENTIFIQUE ET TECHNIQUE DU BATIMENT
France
Address
Avenue Jean Jaurès
77421 Marne-la-vallée
Centre Technique Industriel de la Construction Métallique
France
Address
Domaine De Saint-paul
78470 Saint-rémy-lès-chevreuse
Dansk Brandteknisk Institut
Denmark
Address
21,Industriholmen
2650 Hvidovre
Foundation for Technical and Industrial Research at the Norwegian Instituteof Technology
Norway
Address
Tiller Bru
7034 Trondheim
SP SWEDISH NATIONAL TESTING AND RESEARCH INSTITUTE
Sweden
Address
Brinellgatan 4
501 15 Boraas
Technical Research Centre of Finland
Finland
Address
4,Kivimiehentie
02044 Espoo
Universiteit Gent
Belgium
Address
711,Ottergemsesteenwegtraat
9000 Gent