ISO INTERNATIONAL STANDARD 16204 First edition 2012-09-01 Durability Service life design of concrete structures Durabilité - Conception de la durée de vie des structures en béton Reference number ISO 16204:2012(E) LSO @ISO2012 Provided by IHS or networking permitted without license from IHS Not for Resale ISO 16204:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 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 address below or ISO's member body in the country of the requester. ISO copyright office Casepostale56·CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 4122 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii @ ISO 2012 -All rights reserved Provided by IHS ion or networking permitted without license from IHS Not for Resale ISO 16204:2012(E) Contents Page Foreword ..iv Introduction 1 Scope. 2 Normative references. 3 Terms and definitions. 2 4 Symbols and abbreviated terms 5 4.1 Abbreviated terms. 5 4.2 Main letters.. 5 4.3 Subscripts 6 5 Basis of design 6 5.1 Requirements. 6 5.2 Principles of limit state design . 5.3 Basic variables.. 8 5.4 Verification .8 6 Verification of service life design.. 10 6.1 Carbonation-induced corrosion - uncracked concrete 10 6.2 Chloride-induced corrosion - uncracked concrete.... 13 6.3 Influence of cracks upon reinforcement corrosion . .14 6.4 Risk of depassivation with respect to pre-stressed steel 6.5 Freeze/thaw attack. 15 6.6 Chemical attack 17 6.7 Alkali-aggregate reactions 18 7 Execution .19 7.1 General 19 7.2 Execution specification 19 7.3 Formwork. 19 7.4 Materials..... 19 7.5 Inspection. 20 7.6 Action in the event of non-conformity.. 20 8 Maintenance and condition assessment 20 8.1 General.. 20 8.2 Maintenance... 20 8.3 Condition assessment . 21 9 Action in the event of non-conformity. 21 Annex A (informative) Basis of design.. 22 Annex B (informative) Verification of service life design. ..24 AnnexC(informative)Execution.. ..28 AnnexD(informative)Maintenanceandconditionassessment .29 Annex E (informative) Guidance on a national annex .30 Bibliography .31 @ ISO 2012 -All rights reserved ili sermitted without license from IHS Not for Resale