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A platform for research: civil engineering, architecture and urbanism
Fire resistance of steel members protected with intumescent coatings
The required intumescent coating thicknesses needed for fire resistance are proposed by the paints manufactures based on the results of a limited number of standard fire resistance tests, considering different steel section factors and DFTs. This work presents a set of 50 experimental fire resistance tests made in a pilot gas furnace and considering: (i) different member cross-sections (IPE, SHS, CHS, LNP), (ii) analysis at ambient temperature and fire conditions, (iii) application of a mechanical loading in a tree-point bending setup, (iv) different utilization degree level (30%, 50%, 70%) and (v) different intumescent thicknesses. Results show that increasing intumescent fire protection thickness an increase in fire resistance time is achieved. For the same nominal protection thickness the critical temperature and fire resistance time decreases with increasing degree of utilisation. The results from the unprotected fire tests are compared with the ones obtained by the Eurocode 3 part 1.2 simplified calculation method. Taking into account the nominal properties only the CHS section experimental results shows unsafe fire resistance times in comparison to the Eurocode values. ; The authors acknowledge financial support from the Portuguese Science and Technology Foundation, project PTDC/EME-PME/64913/2006, “Assessment of Intumescent Paint Behaviour for Passive Protection of Structural Elements Submitted to Fire Conditions”, and fellowship SFRH/BD/28909/2006. The authors also acknowledge the contribution from the paints manufactures: CIN and Nullifire.
Fire resistance of steel members protected with intumescent coatings
The required intumescent coating thicknesses needed for fire resistance are proposed by the paints manufactures based on the results of a limited number of standard fire resistance tests, considering different steel section factors and DFTs. This work presents a set of 50 experimental fire resistance tests made in a pilot gas furnace and considering: (i) different member cross-sections (IPE, SHS, CHS, LNP), (ii) analysis at ambient temperature and fire conditions, (iii) application of a mechanical loading in a tree-point bending setup, (iv) different utilization degree level (30%, 50%, 70%) and (v) different intumescent thicknesses. Results show that increasing intumescent fire protection thickness an increase in fire resistance time is achieved. For the same nominal protection thickness the critical temperature and fire resistance time decreases with increasing degree of utilisation. The results from the unprotected fire tests are compared with the ones obtained by the Eurocode 3 part 1.2 simplified calculation method. Taking into account the nominal properties only the CHS section experimental results shows unsafe fire resistance times in comparison to the Eurocode values. ; The authors acknowledge financial support from the Portuguese Science and Technology Foundation, project PTDC/EME-PME/64913/2006, “Assessment of Intumescent Paint Behaviour for Passive Protection of Structural Elements Submitted to Fire Conditions”, and fellowship SFRH/BD/28909/2006. The authors also acknowledge the contribution from the paints manufactures: CIN and Nullifire.
Fire resistance of steel members protected with intumescent coatings
Mesquita, L.M.R. (author) / Piloto, P.A.G. (author) / Roque, Sérgio (author) / Vaz, M.A.P. (author)
2012-01-01
Conference paper
Electronic Resource
English
DDC:
690
Fire Resistance of Slim Floors Protected using Intumescent Coatings
| British Library Conference Proceedings | 2001
| BASE | 2019
| British Library Online Contents | 2019