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- Title
Thermische Schutzwirkung von reaktiven Brandschutzsystemen auf kleinformatigen Stahlbauteilen mit gekrümmter Oberfläche.
- Authors
Häßler, Dustin; Hothan, Sascha; Häßler, Mai; Krüger, Simone
- Abstract
Thermal protection effect of reactive fire protection systems on small‐scale steel components with curved surfaces Intumescent fire protection coatings, also referred to as reactive fire protection systems, are often used to protect steel components from heating up too quickly in the event of a fire. The products are particularly suitable due to profile‐following application as well as the comparatively low coating thickness. If exposed to fire, the intumescent coating foams up and forms a thermal protective layer around the steel profile. This slows down the heating of the steel and delays the temperature‐related loss of strength, which improves the fire resistance of the steel component. From fire tests it is known that the performance of intumescent coatings on steel profiles with a curved surface is usually worse than on comparable components with a flat surface. The following article presents the theoretical background as well as the results from fire tests on small‐scale specimens to show the influence of surface curvature on the thermal protective effect of intumescent fire protection coatings. The systematic investigations show that with increasing surface curvature, the performance of the intumescent coating tends to decrease. When assessing the thermal protective effect of an intumescent coating, the surface curvature of a steel component should be considered. Focusing solely on the profile factor of a steel profile is generally not sufficient. The research forms the basis for the development of screening tests to assess the suitability of intumescent coatings for curved surfaces, enabling a pre‐selection of products for this application.
- Subjects
STEEL walls; FIRE prevention; FIRE testing; CURVED surfaces; SURFACE coatings; STEEL
- Publication
Bautechnik, 2021, Vol 98, Issue 5, p333
- ISSN
0932-8351
- Publication type
Article
- DOI
10.1002/bate.202100011