ISO INTERNATIONAL STANDARD 1920-8 First edition 2009-04-01 Testing of concrete - Part 8: Determination of drying shrinkage of concrete for samples prepared in the field or in the laboratory Essais du béton - Partie 8: Determination du retrait de séchage du beton d'échantillons preparés sur le terrain ou en laboratoire Reference number ISO 1920-8:2009(E) @ISO 2009 y IHS under ted without license from IHS Not for Resale ISO 1920-8:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT @ ISO2009 All rights:reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Casepostale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ Iso 2009 - All rights reserved ed without license from IHS Not for Resale ISO 1920-8:2009(E) Contents Page Foreword 1 Scope 2 Normative references 3 Terms and definitions.. 4 Principle.. 5 Apparatus. 6 Test samples and specimens. 6.1 Sampling... 6.2 Test specimens 7 Procedure 7.1 Measurementofconsistenceandtemperatureofconcrete 7.2 Preparation and filling of the moulds .... 7.3 Compacting of concrete.... 7.4 Curing of specimens ..... 7.5 Drying and measurement of specimens. 10 8 Calculation and expression of results. 12 9 Test report... 12 10 Precision for laboratory-prepared specimens.... 14 Annex A (informative) A suitable horizontal length comparator.... Copyrght International Organizaionsadardizaoghtsreserved ii nse from IHS Not for Resale