ISO INTERNATIONAL STANDARD 8840 Second edition 2021-09 Refractory materials Determination of bulk density of granular materials (grain density) Materiaux refractaires Determination de la masse volumique apparente des matériaux en grains (masse volumique des grains) Reference number IS0 8840:2021(E) ISO @ISO2021 IS0 8840:2021(E) COPYRIGHTPROTECTED DOCUMENT IS02021 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 any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's member body in the country of the requester. IsO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved