This article presents the experimental results of stone wool–layered sandwich constructions, with either steel or gypsum claddings, tested under four different heating exposures: 7 kW/m2 incident radiant heat flux exposure, 60 kW/m2 incident radiant heat flux exposure, parametric time–temperature curve exposure and ISO 834 standard time–temperature exposure. The test apparatus used were a movable radiant panel system, a mid-scale furnace (1.5 m3) and a large-scale furnace (15 m3). The results show that reduced-scale tests are capable of reproducing the heat transferred through the construction at large scale provided there is limited mechanical degradation. The results indicate that the availability of oxygen is fundamental to the fire behaviour of the sandwich composites tested. Reactions occurring in stone wool micro-scale testing, such as oxidative combustion of the binder or crystallisation of the fibres, have a limited effect on the temperature increase when wool is protected from air entrainment.
International Organization for Standardization (ISO) 834-1:1999. Fire resistance tests – elements of building construction – part 1: general requirements.
2.
TakedaH. A model to predict fire resistance of non-load bearing wood-stud walls. Fire Mater2003; 27(1): 19–39.
3.
KeerthanPMahendranM. Numerical modelling of non-load-bearing light gauge cold-formed steel frame walls under fire conditions. J Fire Sci2012; 30(5): 375–403.
4.
CraftSIsgorBMehaffeyJet al. Modelling heat and mass transfer in wood-frame floor assemblies exposed to fire. Fire Safety Sci2008; 9: 1303–1314.
5.
TakedaHMehaffeyJR. WALL2D: a model for predicting heat transfer through wood-stud walls exposed to fire. Fire Mater1998; 22(4): 133–140.
6.
SultanMAlfawakhiriFBenichouN. A model for predicting heat transfer through insulated steel-stud wall assemblies exposed to fire. In: Proceedings of the fire and materials 2001 international conference, San Francisco, CA, 22–24 January 2001, pp. 495–506. Interscience Communications.
7.
ClancyP. Time and probability of failure of timber framed walls in fire. Melbourne, VIC, Australia: Victoria University, 1999.
8.
ThomasG. Thermal properties of gypsum plasterboard at high temperatures. Fire Mater2002; 26(1): 37–45.
9.
KeerthanPMahendranM. Thermal performance of composite panels under fire conditions using numerical studies: plasterboards, Rockwool, glass fibre and cellulose insulations. Fire Technol2013; 49(2): 329–356.
10.
AndresBVan HeesP. Experimental and thermal analysis of wall assemblies exposed to standard and parametric fires. In: Proceedings of the 1st international conference on structural safety under fire & blast (CONFAB2015), Glasgow, 2–4 September 2015. Glasgow: ASRANet, Ltd.
11.
CraftSTIsgorBHadjisophocleousGet al. Predicting the thermal response of gypsum board subjected to a constant heat flux. Fire Mater2008; 32: 333–355.
AndresBHidalgoJPBisbyLet al. Experimental analysis of stone wool sandwich composites exposed to constant incident heat fluxes and simulated parametric fires. In: Proceedings of the 15th international conference on fire and materials 2017, San Francisco, CA, 6–8 February 2017. Bromley: Interscience Communications.
14.
LivkissKAndresBBhargavaAet al. Characterization of stone wool properties for fire safety engineering calculations. J Fire Sci2018; 36: 202–223.
15.
HidalgoJPToreroJLWelchS. Experimental characterisation of the fire behaviour of thermal insulation materials for a performance-based design methodology. Fire Technol2017; 53: 1201–1232.
16.
NagyNDidomizioMWeckmanEJet al. Determination of thermochemical properties of stone wool insulation materials. In: Proceedings of the 15th international conference on fire and materials 2017, San Francisco, CA, 6–8 February 2017. Bromley: Interscience Communications.
17.
SjostromJJanssonR. Measuring thermal material properties for structural fire engineering. In: Proceedings of the 15th international conference on experimental mechanics, Porto, 22–27 July 2012. Porto Ed. INEGI 2012.
18.
BentzDPFlynnDRKimJHet al. A slug calorimeter for evaluating the thermal performance of fire resistive materials. Fire Mater2006; 30: 257–270.
19.
BentzDPGaalPSGaalDS. Further progress in the development of a slug calorimeter for evaluating the apparent thermal conductivity of fire resistive materials. In: Proceedings of the thermal conductivity 29/thermal expansion 17, Birmingham, AL, 24–27 June 2008, pp. 403–411. Lancaster, PA: DesTech Publications, Inc.
20.
OlsenHSjöströmJJanssonRet al. Thermal properties of heated insulation materials. In: Proceedings of the 13th international fire and engineering conference INTERFLAM, London, 24–26 June 2013, pp. 1049–1060. Gosport: Interscience Communications Limited.
21.
EN 1993-1-2:2005. Eurocode 3: design of steel structures – part 1–2: general rules – structural fire design.
22.
LivkissKAndresBJohanssonNet al. Uncertainties in material thermal modelling of fire resistance tests. In: Proceedings of the 2nd European symposium of fire safety science, Nicosia, Cyprus, 20 June 2015, pp. 1–6. http://fbiw.uniza.sk/kkm/fireff/dokumenty/mozer_30.pdf
23.
HidalgoJP. Performance-based methodology for the fire safe design of insulation materials in energy efficient buildings. Edinburgh: The University of Edinburgh, 2015.
24.
DyrbølS. Heat transfer in Rockwool modelling and method of measurement. Kongens Lyngby: Technical University of Denmark, 1998.
25.
ISO 1182:2010(en). Reaction to fire tests for products – non-combustibility test.
26.
ParkSManzelloSBentzDPet al. Determining thermal properties of gypsum board at elevated temperatures. Fire Mater2010; 34: 237–250.
27.
MélingeYLanosCNguyenKSet al. One-dimensional-time study of the dehydration of plasterboards under standard fire condition (ISO 834): thermo-chemical analysis. J Fire Sci2011; 29(4): 299–316.
28.
MalukCBisbyLKrajcovicMet al. A Heat-Transfer Rate Inducing System (H-TRIS) test method. Fire Safety J. Epub ahead of print 21June2016. DOI: 10.1016/j.firesaf.2016.05.001.
WickströmU. The adiabatic surface temperature and the plate thermometer. In: Proceedings of the IAFSS symposium, 19–24 June 2011 at the University of Maryland, College Park, USA. iafss.org.
35.
AireCT. Experimental and numerical modeling of heat transfer in wall assemblies. Master’s Thesis, University of Saskatchewan, Saskatoon, SK, Canada, 2014.
36.
LivkissKAndresBJohanssonNet al. Uncertainties in modelling heat transfer in fire resistance tests: a case study of stone wool sandwich panels. Fire Mater2017; 41: 799–807.
