ISO INTERNATIONAL STANDARD 13270 First edition 2013-01-15 Steel fibres for concrete Definitions and specifications Fibres d'acier pour béton - Definitions et specifications Reference number ISO13270:2013(E) TSO IS02013 IS0 13270:2013(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IsO at the addressbeloworIso'smemberbodyinthecountryoftherequester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel.+41227490111 Fax +41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii @ IS0 2013 - All rights reserved IS0 13270:2013(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Symbols. .3 5 Classification 3 6 Ordering information ..4 7 Requirements. ..4 7.1 Dimensions and tolerances .4 7.2 Surface condition .5 7.3 Tensile strength of fibres. .6 7.4 Modulus of elasticity. ..6 7.5 Bending requirements. .6 7.6 Mixing. ..6 7.7 Reinforcing effect of the steel fibres in concrete .6 7.8 Effect on consistency of concrete 1 7.9 Effect on air of concrete. .7 8 Testing and Inspection .1 8.1 General 8.2 ITT (Initial Type Test) 1 8.3 Factory production control (FPC) ..8 9 Packaging and package marking .11 Annex A (normative) Reference concretes ..13 Bibliography .17 @ IS0 2013 - All rights reserved iii