ISO/TR TECHNICAL REPORT 15655 Second edition 2020-02 Fire resistance Tests for thermo- physical and mechanical properties of structural materials at elevated temperatures for fire engineering design Resistanceaufeu-Essais despropriétés thermophysiques et mecaniquesdesmateriaux auxtemperatureseleveespour la conceptionde l'ingenieriecontrel'incendie Reference number IS0/TR15655:2020(E) ISO @IS02020 IS0/TR15655:2020(E) COPYRIGHTPROTECTEDDOCUMENT ISO2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or IsO's member body in the country of the requester: ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122.749 0111 Fax: +41 22 749 09 47 Email:[email protected] Website: www.iso.org Published in Switzerland ii IS02020-Allrights reserved IS0/TR15655:2020(E) Contents Page Foreword vi Introduction .vii 1 Scope. .1 2 Normativereferences .1 3 Terms anddefinitions .1 4 Tests for thermalproperties at elevated temperatures 4.1 Metals 1 4.1.1 General. 1 4.1.2 Specific heat 1 4.1.3 Thermal conductivity 2 4.1.4 Thermal diffusivity 2 4.1.5 Thermal strain (expansionand contraction) 3 4.1.6 Emissivity 3 4.2 Concrete 4 4.2.1 General. 4 4.2.2 Specificheat 4 4.2.3 Thermal conductivity 4 4.2.4 Thermal diffusivity 5 4.2.5 Thermal strain (expansionand contraction) 5 4.2.6 Density. 6 4.2.7 Emissivity 6 4.2.8 Spalling. 7 4.2.9 Expansion/shrinkage. 7 4.2.10 Moisture 7 4.3 Masonry 7 4.3.1 Specific heat 7 4.3.2 Thermal conductivity 8 4.3.3 Thermal diffusivity. 9 4.3.4 Thermal strain (expansion and contraction) .9 4.3.5 Density. 10 Emissivity 4.3.6 10 4.3.7 Spalling 10 4.3.8 Expansion/shrinkage 11 4.3.9 Moisture content. 11 4.4 Wood. 11 4.4.1 General. 11 4.4.2 Specific heat 11 4.4.3 Thermal conductivity 12 4.4.4 Thermal diffusivity. 12 4.4.5 Density. .13 4.4.6 Charring rate 13 4.4.7 Emissivity 14 4.4.8 Moisture 14 4.5 Plastics,fibre reinforcement,organic and inorganicmaterials 14 4.5.1 General. 14 4.5.2 Specificheat 15 4.5.3 Thermal conductivity .15 4.5.4 Thermal diffusivity. 16 4.5.5 Thermal strain (expansion and contraction) 16 4.5.6 Density. 16 4.5.7 Emissivity .17 4.6 Adhesives. 17 4.6.1 General. 17 @ IS0 2020 - All rights reserved iii