ISO INTERNATIONAL STANDARD 14689 First edition 2017-12 Geotechnical investigation and testing Identification, description and classification of rock ReconnaissanceetessaisgéotechniquesIdentification,description etclassificationdes roches Reference number IS0 14689:2017(E) ISO @ISO2017 IS0 14689:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, 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 on the internet or an intranet, without prior written permission. Permission can be requested from either ISo at the address below or ISo's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8. CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org i @ IS0 2017 - All rights reserved IS0 14689:2017(E) Contents Page Foreword ..iv Introduction. .. 1 Scope. 2 Normative references 3 Terms and definitions .3 4 Identification and description of rocks 4.1 General .3 3 4.2 Rock identification.. 4.3 Geological formation and age 4 5 Rock material description .4 5.1 Colour. ..4 5.2 Grain size. .5 5.3 Unconfined compressive strength 5.4 Weatheringandalterationeffects 6 5.5 ..7 Carbonatecontent 5.6 Degradation of rock material .7 Rock mass description .7 6 6.1 General. .7 6.2 Rock types. .8 6.3 Structure and bedding .8 6.4 Discontinuities .8 6.4.1 General. .8 6.4.2 Measurementofdiscontinuityorientation 6.4.3 Discontinuity spacing .10 6.4.4 Rockblock shapes in three dimensions. .10 6.4.5 Persistenceof discontinuities. .11 6.4.6 Roughness. .11 6.4.7 Aperture .12 Infilling 6.4.8 .13 6.4.9 Seepage .13 6.4.10 .13 Joint sets 6.5 Weathering of the rock mass .13 7 Fracture indices in cores. ..14 8 Rock mass classification ..15 9 Reporting ..16 AnnexA (informative)Aidtoidentificationof rocks onthebasisofgeologicalfeatures for engineering purposes ..17 AnnexB (informative)Classificationofweathering ofrocks (materialand mass) ..18 AnnexC (informative)Descriptionofdiscontinuitiesinthreedimensions ..20 Bibliography .21 @ IS0 2017 - All rights reserved ili