EN ISO 17892-12:2018
(Main)Geotechnical investigation and testing - Laboratory testing of soil - Part 12: Determination of liquid and plastic limits (ISO 17892-12:2018)
Geotechnical investigation and testing - Laboratory testing of soil - Part 12: Determination of liquid and plastic limits (ISO 17892-12:2018)
This document specifies methods for the determination of the liquid and plastic limits of a soil. These comprise two of the Atterberg limits for soils.
The liquid limit is the water content at which a soil changes from the liquid to the plastic state.
This document describes the determination of the liquid limit of a specimen of natural soil, or of a specimen of soil from which material larger than about 0,4 mm has been removed. This document describes two methods: the fall cone method and the Casagrande method.
NOTE The fall cone method in this document should not be confused with that of ISO 17892‑6.
The plastic limit of a soil is the water content at which a soil ceases to be plastic when dried further.
The determination of the plastic limit is normally made in conjunction with the determination of the liquid limit. It is recognized that the results of the test are subject to the judgement of the operator, and that some variability in results will occur.
Geotechnische Erkundung und Untersuchung - Laborversuche an Bodenproben - Teil 12: Bestimmung der Fließ- und Ausrollgrenzen (ISO 17892-12:2018)
Diese Internationale Norm legt Verfahren zur Bestimmung der Fließ- und Ausrollgrenze von durchmischten Böden fest. Dies umfasst zwei der Zustandsgrenzen für Böden nach Atterberg.
Die Fließgrenze ist der Wassergehalt, bei dem der Boden vom flüssigen in den plastischen Zustand übergeht.
Dieses Dokument beschreibt die Bestimmung der Fließgrenze an einer Probe von natürlichem Boden oder einer Bodenprobe, bei denen die Körner mit einem Korndurchmesser größer als 0,4 mm entfernt wurden. Dieses Dokument beschreibt zwei Methoden: Die Fallkegelmethode und die Methode von Casagrande.
ANMERKUNG Die Fallkegelmethode in dieser Norm sollte nicht mit der in ISO 19892 6 verwendeten verwechselt werden.
Die Ausrollgrenze ist der Wassergehalt, bei dem der Boden bei weiterer Trocknung aufhört, plastisch zu sein.
Die Bestimmung der Ausrollgrenze erfolgt normalerweise in Verbindung mit der Bestimmung der Fließgrenze. Es wird anerkannt, dass die Ergebnisse der Prüfung dem Urteil des Prüfers unterliegen und dass in den Ergebnissen eine gewisse Variabilität auftreten wird.
Reconnaissance et essais géotechniques - Essais de laboratoire sur les sols - Partie 12: Détermination des limites de liquidité et de plasticité (ISO 17892-12:2018)
Le présent document spécifie les méthodes de détermination des limites de liquidité et de plasticité d'un sol. Celles-ci constituent deux des limites d'Atterberg applicables aux sols.
La limite de liquidité est la teneur en eau à laquelle un sol passe de l'état liquide à l'état plastique.
Le présent document décrit la détermination de la limite de liquidité d'un échantillon de sol naturel, ou d'un échantillon de sol duquel les matériaux de dimension supérieure à 0,4 mm ont été retirés. Ce document décrit deux méthodes: la méthode du cône tombant et la méthode de Casagrande.
NOTE La méthode du cône tombant dans ce document ne devrait pas être confondue avec celle de la norme ISO 17892‑6.
La limite de plasticité d'un sol est la teneur en eau à laquelle ce sol cesse d'être plastique lorsque l'on continue à le sécher.
La détermination de la limite de plasticité est normalement faite en parallèle avec celle de la limite de liquidité. Il est reconnu que les résultats de l'essai sont sujets à l'appréciation de l'opérateur, et qu'une certaine dispersion des résultats pourra se produire.
Geotehnično preiskovanje in preskušanje - Laboratorijsko preskušanje zemljin - 12. del: Ugotavljanje meje tekočine in plastičnosti (ISO 17892-12:2018)
Ta dokument določa metode za ugotavljanje meje tekočine in plastičnosti zemljine, ki zajemajo dve od Atterbergovih mejnih vrednosti za zemljine.
Meja tekočine je vsebnost vode, pri kateri se stanje zemljine spremeni iz tekočega v plastično. Ta dokument opisuje ugotavljanje meje tekočine vzorca naravne zemljine ali vzorca zemljine, iz katerega je odstranjen material večji od približno 0,4 mm. Ta dokument opisuje dve metodi: metodo s konusom in Casagrandejevo metodo.
OPOMBA: Metoda s konusom v tem dokumentu se ne sme zamenjevati z metodo iz standarda ISO 17892-6. Meja plastičnosti zemljine je vsebnost vode, pri kateri zemljina pri nadaljnjem sušenju preneha biti plastična. Ugotavljanje meje plastičnosti običajno poteka v povezavi z ugotavljanjem meje tekočine. Ugotovljeno je, da so rezultati preskusa odvisni od presoje upravljavca in da bo pri rezultatih prišlo do nekaterih razlik.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2018
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SIST-TS CEN ISO/TS 17892-12:2004
SIST-TS CEN ISO/TS 17892-12:2004/AC:2010
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Geotechnical investigation and testing - Laboratory testing of soil - Part 12:
Determination of liquid and plastic limits (ISO 17892-12:2018)
Geotechnische Erkundung und Untersuchung - Laborversuche an Bodenproben - Teil
12: Bestimmung der Zustandsgrenzen (ISO 17892-12:2018)
Reconnaissance et essais géotechniques - Essais de laboratoire sur les sols - Partie 12:
Détermination des limites de liquidité et de plasticité (ISO 17892-12:2018)
Ta slovenski standard je istoveten z: EN ISO 17892-12:2018
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 17892-12
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2018
EUROPÄISCHE NORM
ICS 13.080.20; 93.020 Supersedes CEN ISO/TS 17892-12:2004
English Version
Geotechnical investigation and testing - Laboratory testing
of soil - Part 12: Determination of liquid and plastic limits
(ISO 17892-12:2018)
Reconnaissance et essais géotechniques - Essais de Geotechnische Erkundung und Untersuchung -
laboratoire sur les sols - Partie 12: Détermination des Laborversuche an Bodenproben - Teil 12: Bestimmung
limites de liquidité et de plasticité (ISO 17892- der Zustandsgrenzen (ISO 17892-12:2018)
12:2018)
This European Standard was approved by CEN on 15 June 2018.
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 17892-12:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 17892-12:2018) 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 January 2019, and conflicting national standards shall
be withdrawn at the latest by January 2019.
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 17892-12:2004.
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 17892-12:2018 has been approved by CEN as EN ISO 17892-12:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 17892-12
First edition
2018-06
Geotechnical investigation and
testing — Laboratory testing of soil —
Part 12:
Determination of liquid and plastic
limits
Reconnaissance et essais géotechniques — Essais de laboratoire sur
les sols —
Partie 12: Détermination des limites de liquidité et de plasticité
Reference number
ISO 17892-12:2018(E)
©
ISO 2018
ISO 17892-12:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2018 – All rights reserved
ISO 17892-12:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 2
4.1 General . 2
4.2 Fall cone method . 3
4.3 Casagrande method . 5
4.4 Plastic limit equipment . 6
5 Test procedure . 7
5.1 Choice of liquid limit method . 7
5.2 Specimen preparation . 7
5.3 Determination of liquid limit by the fall cone method . 8
5.4 Determination of liquid limit by the Casagrande method .10
5.5 Determination of plastic limit .12
6 Test results .13
6.1 Proportion of sample smaller than 0,4 mm .13
6.2 Liquid limit by the fall cone method .13
6.3 Liquid limit by the Casagrande method .15
6.4 Plastic limit .15
6.5 Plasticity index .16
7 Test report .16
7.1 Mandatory reporting .16
7.2 Optional reporting .16
Annex A (normative) Calibration, maintenance and checks .18
Annex B (normative) Additional parameters .25
Bibliography .27
ISO 17892-12:2018(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
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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
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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
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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 17892-12 cancels and replaces ISO/TS 17892-12:2004, which has been
technically revised. It also incorporates ISO/TS 17892-12:2004/Cor.1:2006.
A list of all the parts in the ISO 17892 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
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