ISO INTERNATIONAL STANDARD 10930 First edition 2012-05-01 Soil gquality Measurement of the stability of soil aggregates subjected to the action of water Qualité du sol- Mesure de la stabilite d'agrégats de sols soumis a I'action de I'eau Reference number ISO 10930:2012(E) LSO @ ISO 2012 IHS under itted without license from IHS Not for Resale ISO10930:2012(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 Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2012 -All rights reserved y IHS unde etworking permitted without license from IHS Not for Resale ISO 10930:2012(E) Contents Page Foreword ..iv Introduction 1 Scope. 2 Normative references 3 Terms and definitions.. 4 Reagent and equipment required for stability tests 5 Procedures. 3 5.1 General 3 5.2 Field sampling... 3 5.3 Preparation of the soil sample.. 3 5.4 Treatmentmethods.. 5.5 Measurement of the size distribution of the remaining aggregates. 5 6 Calculation 6 6.1 General 6 6.2 Corrected MWD for soils with gravels. 7 Additional treatmentfordispersiblesoils .6 8 Interpretation of the results 6 9 Testreport .8 Annex A (informative) Flow diagram of the measurement of aggregate stability .9 Annex B (informative) Examples of the presentation of the test results on the same sample .10 Annex C (informative) Sensitivity and repeatability test of the method for seven operators onareferencesample. 12 Bibliography. 13 ili cense from IHS Not for Resal