SIST EN ISO 17892-7:2018

SLOVENSKI STANDARD
SIST EN ISO 17892-7:2018
01-april-2018
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SIST-TS CEN ISO/TS 17892-7:2004
SIST-TS CEN ISO/TS 17892-7:2004/AC:2010
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Geotechnical investigation and testing - Laboratory testing of soil - Part 7: Unconfined
compression test (ISO 17892-7:2017)
Geotechnische Erkundung und Untersuchung - Laborversuche an Bodenproben - Teil 7:
Einaxialer Druckversuch (ISO 17892-7:2017)
Reconnaissance et essais géotechniques - Essais de laboratoire sur les sols - Partie 7:
Essai de compression uniaxiale (ISO 17892-7:2017)
Ta slovenski standard je istoveten z: EN ISO 17892-7:2018
ICS:
13.080.20 Fizikalne lastnosti tal Physical properties of soils
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
SIST EN ISO 17892-7:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17892-7:2018

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SIST EN ISO 17892-7:2018


EN ISO 17892-7
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2018
EUROPÄISCHE NORM
ICS 13.080.20; 93.020 Supersedes CEN ISO/TS 17892-7:2004
English Version

Geotechnical investigation and testing - Laboratory testing
of soil - Part 7: Unconfined compression test (ISO 17892-
7:2017)
Reconnaissance et essais géotechniques - Essais de Geotechnische Erkundung und Untersuchung -
laboratoire sur les sols - Partie 7: Essai de compression Laborversuche an Bodenproben - Teil 7: Einaxialer
uniaxiale (ISO 17892-7:2017) Druckversuch (ISO 17892-7:2017)
This European Standard was approved by CEN on 24 November 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 bibliographical 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 of 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 Macedonia, 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
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17892-7:2018 E
worldwide for CEN national Members.

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SIST EN ISO 17892-7:2018
EN ISO 17892-7:2018 (E)
Contents Page
European foreword . 3


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SIST EN ISO 17892-7:2018
EN ISO 17892-7:2018 (E)
European foreword
This document (EN ISO 17892-7:2018) has been prepared by Technical Committee ISO/TC 182
“Geotechnics” in collaboration with Technical Committee CEN/TC 341 “Geotechnical Investigation and
Testing” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2018, and conflicting national standards shall
be withdrawn at the latest by August 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN ISO/TS 17892-7:2004.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, 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, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 17892-7:2017 has been approved by CEN as EN ISO 17892-7:2018 without any
modification.


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SIST EN ISO 17892-7:2018

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SIST EN ISO 17892-7:2018
INTERNATIONAL ISO
STANDARD 17892-7
First edition
2017-11
Geotechnical investigation and
testing — Laboratory testing of soil —
Part 7:
Unconfined compression test
Reconnaissance et essais géotechniques — Essais de laboratoire sur
les sols —
Partie 7: Essai de compression uniaxiale
Reference number
ISO 17892-7:2017(E)
©
ISO 2017

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SIST EN ISO 17892-7:2018
ISO 17892-7:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 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
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

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SIST EN ISO 17892-7:2018
ISO 17892-7:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Apparatus . 2
6 Test procedure . 4
6.1 General requirements and equipment preparation . 4
6.2 Preparation of specimens . 4
6.3 Initial readings . 5
6.4 Compression . 5
6.5 Dismounting . 6
7 Test results . 6
7.1 Bulk density, dry density and water content . 6
7.2 Stress and strain during compression . 6
7.3 Unconfined compressive strength. 6
7.4 Undrained shear strength. 7
8 Test report . 7
8.1 Mandatory reporting . 7
8.2 Optional reporting . 7
Annex A (normative) Calibration, maintenance and checks . 8
Bibliography .10
© ISO 2017 – All rights reserved iii

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SIST EN ISO 17892-7:2018
ISO 17892-7:2017(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation 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 committee. 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 and 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, Part 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 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 standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's 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.
This document was prepared by the European Committee for Standardization (CEN) Technical
Committee CEN/TC 341, Geotechnical investigation and testing, in collaboration with ISO Technical
Committee TC 182, Geotechnics, in accordance with the Agreement on technical cooperation between
ISO and CEN (Vienna Agreement).
This first edition of ISO 17892-7 cancels and replaces ISO/TS 17892-7:2004, which has been technically
revised. It also incorporates the Technical Corrigendum ISO/TS 17892-7:2004/Cor 1:2006.
A list of all the parts in the ISO 17892 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

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SIST EN ISO 17892-7:2018
ISO 17892-7:2017(E)

Introduction
This document covers areas in the international field of geotechnical engineering never previously
standardized. It is intended that this document presents broad good practice throughout the world
and significant differences with national documents are not anticipated. It is based on international
practice (see Reference [4]).
© ISO 2017 – All rights reserved v

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SIST EN ISO 17892-7:2018
INTERNATIONAL STANDARD ISO 17892-7:2017(E)
Geotechnical investigation and testing — Laboratory
testing of soil —
Part 7:
Unconfined compression test
1 Scope
This document specifies a method for the unconfined compression test.
This document is applicable to the determination of the unconfined compressive strength for a
homogeneous specimen of undisturbed, re-compacted, remoulded or reconstituted soil under
compression loading within the scope of geotechnical investigations.
This test method is useful to estimate the undrained shear strength of soil. It is noted that drainage
is not prevented during this test. The estimated value for undrained shear strength is, therefore, only
valid for soils of low permeability, which behave sufficiently undrained during the test.
NOTE This document fulfils the requirements of unconfined compression tests for geotechnical investigation
and testing in accordance with EN 1997-1 and EN 1997-2.
2 Normative references
The following documents are referred to in the 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 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 description
ISO 17892-1, Geotechnical investigation and testing — Laboratory testing of soil — Part 1: Determination
of water content
ISO 17892-2, Geotechnical investigation and testing — Laboratory testing of soil — Part 2: Determination
of bulk density
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
unconfined compressive strength
...