ISO INTERNATIONAL STANDARD 20977 First edition 2018-12 Liming materialsDetermination of size distribution by dry and wet sieving AmendementsminerauxbasiquesDeterminationdeladistribution granulometriquepartamisageasecoual'étathumide Referencenumber IS020977:2018(E) ISO2018 IS020977:2018(E) COPYRIGHTPROTECTEDDOCUMENT IS02018 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 anyform or by anymeans,electronic or mechanical, including photocopying,orposting on the internet or an intranet, without prior written permission.Permission can be requested from either Iso at the address beloworIso'smemberbodyinthecountryoftherequester. ISO copyright office CP401.Ch.deBlandonnet8 CH-1214 Vernier,Geneva Phone:+41227490111 Fax:+41227490947 Email:copyright@iso.org Website:www.iso.org Published in Switzerland ii IS02018-All rights reserved IS020977:2018(E) Contents Page Foreword. .iv Introduction. 1 Scope. .1 2 Normativereferences .1 3 Terms and definitions .1 4 Principle .1 4.1 Suitablemethods 1 4.2 Method A (dry sieving) 4 4.3 Method B (wet sieving) 4 5 Apparatus 4 6 Sampling 4 7 Procedure 5 7.1 Testportion 5 7.2 Method A (dry sieving) 5 7.2.1 Preparationoftestportions. 5 7.2.2 Determination 5 7.3 MethodB (wetsieving) 5 7.3.1 General. 5 7.3.2 Determination 6 8 Expression ofresults 6 8.1 MethodA 6 8.2 Method B .7 9 Precision .7 9.1 General 7 9.2 Repeatability .7 9.3 Reproducibility 8 10 Testreport. 8 AnnexA (informative)Results ofan interlaboratorytrial todetermine the size distribution by dry and wet sieving 9 Bibliography .14 Is02018-Allrightsreserved ili