How passive the passive fire protection layers actually are?

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaAbstractProfessional


Passive fire protection products are commonly based on mineral materials with porous structure for low thermal conductivity. Although the mineral materials can often be considered inert in fire temperatures, many products contain additional binder materials that decompose at temperatures much lower than the typical criteria for product acceptance. This is especially important for mineral wools, such as stone wool. In this presentation we demonstrate the influence of exothermic binder reactions on the cold side -temperatures during fire resistance tests. By multi-physics simulation, we investigate the effects of the stone wool properties, such as binder content and density, and boundary conditions (permeable or non-permeable). We show that the binder oxidation reactions can reduce the product’s fire resistance time and pose a threat to protected materials with low critical temperature. The efficiency of thermal protection greatly improves when the stone wool core is closed between non-permeable surface layers. In such products, however, two- and three-dimensional transport effects may start to play a role, indicating the need for future research.
TilaJulkaistu - 2021
OKM-julkaisutyyppiEi oikeutettu
TapahtumaInternational Conference of Applications of Structural Fire Engineering - Ljubljana, Slovenia
Kesto: 10 kesäkuuta 202111 kesäkuuta 2021
Konferenssinumero: 7


ConferenceInternational Conference of Applications of Structural Fire Engineering


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