1、July 2017 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.080.20; 93.020!%gu“2688259www.di
2、n.deDIN EN ISO 17892-6Geotechnical investigation and testing Laboratory testing of soil Part 6: Fall cone test (ISO 178926:2017);English version EN ISO 178926:2017,English translation of DIN EN ISO 17892-6:2017-07Geotechnische Erkundung und Untersuchung Laborversuche an Bodenproben Teil 6: Fallkegel
3、versuch (ISO 178926:2017);Englische Fassung EN ISO 178926:2017,Englische bersetzung von DIN EN ISO 17892-6:2017-07Reconnaissance et essais gotechniques Essais de laboratoire sur les sols Partie 6: Essai de pntration de cne (ISO 178926:2017);Version anglaise EN ISO 178926:2017,Traduction anglaise de
4、DIN EN ISO 17892-6:2017-07SupersedesDIN ISO/TS 178926:200501www.beuth.deDocument comprises 20 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.06.17 DIN EN ISO 17892-6:2017-07 2 A comma is used as the decimal marker. National fo
5、reword This document (EN ISO 17892-6:2017) has been prepared by Technical Committee CEN/TC 341 “Geotechnical investigation and testing” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee ISO/TC 182 “Geotechnics”. The responsible German body involved in its preparation was D
6、IN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-05-03 AA “Laboratory tests on soils”. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 14688-1 DIN EN ISO 14688-1 ISO 17892-1
7、DIN EN ISO 17892-1 Amendments This standard differs from DIN ISO/TS 17892-6:2005-01 as follows: a) the standard has been revised in form and substance; b) the annexes have been revised; Annex A “Calibration, maintenance and checks” has been added. Previous editions DIN ISO/TS 17892-6: 2005-01 DIN EN
8、 ISO 17892-6:2017-07 3 National Annex NA (informative) Bibliography DIN EN ISO 14688-1, Geotechnical investigation and testing Identification and classification of soil Part 1: Identification and description DIN EN ISO 17892-1, Geotechnical investigation and testing Laboratory testing of soil Part 1
9、: Determination of water content DIN EN ISO 17892-6:2017-07 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17892-6 March 2017 ICS 93.020; 13.080.20 Supersedes CEN ISO/TS 17892-6:2004English Version Geotechnical investigation and testing - Laboratory testi
10、ng of soil - Part 6: Fall cone test (ISO 17892-6:2017) Reconnaissance et essais gotechniques - Essais de laboratoire sur les sols - Partie 6: Essai de pntration de cne (ISO 17892-6:2017) Geotechnische Erkundung und Untersuchung - Laborversuche an Bodenproben - Teil 6: Fallkegelversuch (ISO 17892-6:2
11、017) This European Standard was approved by CEN on 3 February 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographica
12、l references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility o
13、f a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Ma
14、cedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALI
15、SATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17892-6:2017 EEuropean foreword .3Introduction 51 Scope . 62 Normative
16、references 63 Terms and definitions . 64 Equipment . 75 Test procedure 95.1 Test specimen preparation . 95.2 Test points 105.3 Determination of fall cone penetration 106 Test results . 126.1 Average penetration 126.2 Estimated undrained fall cone shear strength 126.3 Additional estimate of undrained
17、 fall cone shear strength . 127 Test report 127.1 Mandatory reporting 127.2 Optional reporting 13Annex A (normative) Calibration, maintenance and checks 14Bibliography .16Contents PageDIN EN ISO 17892-6:2017-07 EN ISO 17892-6:2017 (E) 2Foreword .4European foreword This document (EN ISO 17892-6:2017)
18、 has been prepared by Technical Committee CEN/TC 341 “Geotechnical Investigation and Testing”, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 182 “Geotechnics”. This European Standard shall be given the status of a national standard, either by publication o
19、f an identical text or by endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest by September 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shal
20、l not be held responsible for identifying any or all such patent rights. This document supersedes CEN ISO/TS 17892-6:2004. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgiu
21、m, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
22、Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17892-6:2017 has been approved by CEN as EN ISO 17892-6:2017 without any modification. DIN EN ISO 17892-6:2017-07 EN ISO 17892-6:2017 (E)3 ForewordISO (the International Organization for Standardization) is a worldwide fe
23、deration of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that com
24、mittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document a
25、nd those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, P
26、art 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development
27、of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of
28、standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.ISO 17892-6 w
29、as prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotechnical investigation and testing, in collaboration with ISO Technical Committee ISO/TC 182, Geotechnics, in accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreeme
30、nt).This first edition cancels and replaces ISO/TS 17892-6:2004, which has been technically revised. It also incorporates the Technical Corrigendum ISO/TS 17892-6:2004/Cor 1:2006.A list of all parts in the ISO 17892 series can be found on the ISO website.DIN EN ISO 17892-6:2017-07 EN ISO 17892-6:201
31、7 (E) 4 IntroductionThis document covers areas in the field of geotechnical engineering never previously standardized internationally. It is intended that this document presents broad good practice throughout the world and significant differences with national documents is not anticipated. It is bas
32、ed on international practice (see Reference 1).DIN EN ISO 17892-6:2017-07 EN ISO 17892-6:2017 (E)5 1 ScopeThis document specifies a method of undrained strength index testing of both undisturbed and remoulded specimens of fine grained soils by the fall cone method.This document is applicable to the
33、laboratory estimation of undrained shear strength of a soil test specimen within the scope of geotechnical investigations.In the fall cone test, a cone is allowed to fall with its tip towards a soil specimen, and the resulting penetration of the cone into the soil is measured. The penetration values
34、 are used to estimate the undrained shear strength. The fall cone test produces a complex shear in the test specimen, and does not represent either a vertical triaxial compression or a horizontal shear test. However, this index test may be correlated to some estimate of undrained shear strength dete
35、rmined in the laboratory by other test methods.As the test is performed on a small laboratory specimen, the result may not agree with laboratory tests on larger specimens. In addition, the test specimen may not be fully representative of the soil in its natural state in the field; for example, the t
36、est specimen may not have fissures present in situ at a larger spacing than the specimen size.Therefore, for the above reasons, the test can be regarded as an estimation of undrained shear strength, rather than a true measurement of it.The ratio of the remoulded shear strength to the undisturbed she
37、ar strength may be used to estimate the sensitivity of a soil specimen. Time-dependent measurement of the shear strength may be used to assess the thixotropic regain of strength of a remoulded soil specimen.NOTE This document fulfils the requirements of the strength index testing of soils for geotec
38、hnical investigation and testing in accordance with EN 19971 and EN 19972.2 Normative referencesThe following documents are referred to in text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated
39、 references, the latest edition of the referenced document (including any amendments) applies.ISO 14688-1, Geotechnical investigation and testing Identification and classification of soil Part 1: Identification and descriptionISO 17892-1, Geotechnical investigation and testing Laboratory testing of
40、soil Part 1: Determination of water content3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.DIN EN ISO 17892-6:2017-07 EN ISO 17892-6:2017 (E) 6 ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC
41、 Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1fall cone undrained shear strength of undisturbed soilcufcundrained shear strength of an undisturbed fine grained soil specimen estimated by the fall cone method3
42、.2fall cone undrained shear strength of remoulded soilcurfcundrained shear strength of a remoulded fine grained soil specimen estimated by the fall cone method4 EquipmentSee Annex A for calibration requirements for the equipment in this clause.4.1 Cone apparatusThe apparatus shall permit the cone to
43、 be held firmly initially and to be released instantaneously to fall freely in the vertical direction into the soil specimen.The apparatus shall have a mechanism which allows the cone to be raised or lowered and adjusted so that the tip of the cone just touches the surface of the specimen before the
44、 cone is released.The cone apparatus shall be equipped with a method of measuring the penetration across the range of at least 4 mm to 20 mm penetration. Methods include a linear scale alongside the shaft, or a circular dial with a pointer needle or an electronic transducer, in both cases bearing on
45、 the upper end of the shaft. If the scale is designed for manual reading, it shall be marked in increments of 1 mm or better.4.2 Fall conesA set of cones with cone angles of 30 or 60 and masses (i.e. mass of cone plus shaft) covering a range of possible shear strengths shall be used. Typical example
46、s of suitable fall cones are given on Table 1. There is limited experience or validation of cones of alternative configuration, for example, heavier than 400 g. Alternate cones should be used with caution.Table 1 Set of fall cones - typical total masses and tip anglesMass g 10 60 80 100 400Tip angle
47、 60 60 30 30 30A 60 g/60 cone is shown in Figure 1 as a typical example of such a cone.DIN EN ISO 17892-6:2017-07 EN ISO 17892-6:2017 (E)7 Key1 cone a deviation from the geometrical tip at manufacturing2 shaft b maximum wear3 index mark h height of the conical tip4 cone tip tip angleFigure 1 Example
48、 of a fall coneWhen penetration readings are taken from a linear scale alongside the shaft, there shall be a distinct index mark for reference near the top of each shaft which shall be clearly visible when viewing the scale.The cones shall be made of or be coated with a corrosion-resistant material such as stainless steel or chromium, and shoul
