ISO INTERNATIONAL STANDARD 23873 First edition 2010-11-15 Hard coal Method for the measurement of the swelling of hard coal using a dilatometer Houille Methode pour le mesurage du gonflement de la houille au moyen d'un dilatometre Reference number ISO 23873:2010(E) @ISO 2010 by IHS under lic Not for Resale ISO 23873:2010(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 COPYRIGHTPROTECTEDDOCUMENT @ISO2010 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 memberbody in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 4122749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2010 - All rights reserved I without license from IHS Not for Resale ISO 23873:2010(E) Contents Page Foreword .iv Introductior 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Materials 6 Apparatus.. 6.1 Mould and accessories 6.2 Dilatometer.. 6.3 Dilatometerfurnace... 6.4 Temperature controller. 6.5 Temperature recorder ... 6.6 Retort and piston... 6.7 Means of recording piston movement . 6.8 Cleaning instruments... 7 Procedure... 7.1 Temperature calibration... 7.2 Preparation of test sample and test pieces 7.3 Determination ... 8 Expression of results 9 Precision 9.1 Repeatability 9.2 Reproducibility 10 Testrepor ili nse from IHS Not for Resale