Details
| Original language | English |
|---|---|
| Article number | 104173 |
| Number of pages | 10 |
| Journal | Fire safety journal |
| Volume | 146 |
| Early online date | 8 May 2024 |
| Publication status | Published - Jun 2024 |
Abstract
It is an essential requirement for all building products to ensure durability of their fire safety. Throughout the working life of products, intumescent coatings are aged by certain climatic factors. To predict a lifetime of several years, generally the behaviour of the intumescent coating is extrapolated based on accelerated artificial ageing. The established German and European procedures to assess the durability assume a working life of at least 10 years. For a longer period, additional evidence is required; yet the procedure and the specifications to justify this are not described. In addition to addressing this formal lack, from a scientific point of view it is necessary to investigate the degradation of intumescent coatings in detail and to propose a reliable test concept to assess durability for more than 10 years. This paper summarises the existing knowledge about the ageing of intumescent coatings. The results of various demanding weathering approaches are presented for two intumescent coatings tested in a joint research project. Moreover, formulations with a reduced amount of functionally relevant components were analysed to gain insight into the associated effects. Derived from these research results and knowledge, recommendations are proposed to assess the durability of intumescent coatings for more than 10 years based on a combination of verifications.
Keywords
- Ageing, Artificial ageing, Fire protection, Intumescent coatings, Steel constructions, Test concept, Thermal performance, Weathering, Working life
ASJC Scopus subject areas
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In: Fire safety journal, Vol. 146, 104173, 06.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Durability of intumescent coatings and recommendations for test concepts for a working life of more than 10 years
AU - Häßler, Dustin
AU - Mund, Maximilian
AU - Daus, Lars Hendrik
AU - Hothan, Sascha
AU - Schaumann, Peter
AU - Schartel, Bernhard
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024/6
Y1 - 2024/6
N2 - It is an essential requirement for all building products to ensure durability of their fire safety. Throughout the working life of products, intumescent coatings are aged by certain climatic factors. To predict a lifetime of several years, generally the behaviour of the intumescent coating is extrapolated based on accelerated artificial ageing. The established German and European procedures to assess the durability assume a working life of at least 10 years. For a longer period, additional evidence is required; yet the procedure and the specifications to justify this are not described. In addition to addressing this formal lack, from a scientific point of view it is necessary to investigate the degradation of intumescent coatings in detail and to propose a reliable test concept to assess durability for more than 10 years. This paper summarises the existing knowledge about the ageing of intumescent coatings. The results of various demanding weathering approaches are presented for two intumescent coatings tested in a joint research project. Moreover, formulations with a reduced amount of functionally relevant components were analysed to gain insight into the associated effects. Derived from these research results and knowledge, recommendations are proposed to assess the durability of intumescent coatings for more than 10 years based on a combination of verifications.
AB - It is an essential requirement for all building products to ensure durability of their fire safety. Throughout the working life of products, intumescent coatings are aged by certain climatic factors. To predict a lifetime of several years, generally the behaviour of the intumescent coating is extrapolated based on accelerated artificial ageing. The established German and European procedures to assess the durability assume a working life of at least 10 years. For a longer period, additional evidence is required; yet the procedure and the specifications to justify this are not described. In addition to addressing this formal lack, from a scientific point of view it is necessary to investigate the degradation of intumescent coatings in detail and to propose a reliable test concept to assess durability for more than 10 years. This paper summarises the existing knowledge about the ageing of intumescent coatings. The results of various demanding weathering approaches are presented for two intumescent coatings tested in a joint research project. Moreover, formulations with a reduced amount of functionally relevant components were analysed to gain insight into the associated effects. Derived from these research results and knowledge, recommendations are proposed to assess the durability of intumescent coatings for more than 10 years based on a combination of verifications.
KW - Ageing
KW - Artificial ageing
KW - Fire protection
KW - Intumescent coatings
KW - Steel constructions
KW - Test concept
KW - Thermal performance
KW - Weathering
KW - Working life
UR - http://www.scopus.com/inward/record.url?scp=85193427529&partnerID=8YFLogxK
U2 - 10.1016/j.firesaf.2024.104173
DO - 10.1016/j.firesaf.2024.104173
M3 - Article
AN - SCOPUS:85193427529
VL - 146
JO - Fire safety journal
JF - Fire safety journal
SN - 0379-7112
M1 - 104173
ER -