SIST EN ISO 10773:2011

SLOVENSKI STANDARD
SIST EN ISO 10773:2011
01-oktober-2011
*OLQHQHJHRVLQWHWLþQHRYLUH8JRWDYOMDQMHSUHSXVWQRVWLSOLQRY,62
Clay geosynthetic barriers - Determination of permeability to gases (ISO 10773:2011)
Geosynthetische Tondichtungsbahnen - Bestimmung der Gasdurchlässigkeit (ISO
10773:2011)
Barrières géosynthétiques bentonitiques - Détermination de la perméabilité aux gaz (ISO
10773:2011)
Ta slovenski standard je istoveten z: EN ISO 10773:2011
ICS:
59.080.70 Geotekstilije Geotextiles
SIST EN ISO 10773:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10773:2011

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SIST EN ISO 10773:2011


EUROPEAN STANDARD
EN ISO 10773

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2011
ICS 59.080.70
English Version
Clay geosynthetic barriers - Determination of permeability to
gases (ISO 10773:2011)
Géosynthétiques bentonitiques - Détermination de la Geosynthetische Tondichtungsbahnen - Bestimmung der
perméabilité aux gaz (ISO 10773:2011) Gasdurchlässigkeit (ISO 10773:2011)
This European Standard was approved by CEN on 28 April 2011.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10773:2011: E
worldwide for CEN national Members.

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SIST EN ISO 10773:2011
EN ISO 10773:2011 (E)
Contents Page
Foreword .3

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SIST EN ISO 10773:2011
EN ISO 10773:2011 (E)
Foreword
This document (EN ISO 10773:2011) has been prepared by Technical Committee ISO/TC 221
"Geosynthetics" in collaboration with Technical Committee CEN/TC 189 “Geosynthetics” the secretariat of
which is held by NBN.
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 November 2011, and conflicting national standards shall be withdrawn
at the latest by November 2011.
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] shall not be held responsible for identifying any or all such patent rights.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 10773:2011 has been approved by CEN as a EN ISO 10773:2011 without any modification.

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SIST EN ISO 10773:2011

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SIST EN ISO 10773:2011

INTERNATIONAL ISO
STANDARD 10773
First edition
2011-05-01

Clay geosynthetic barriers —
Determination of permeability to gases
Géosynthétiques bentonitiques — Détermination de la perméabilité aux
gaz




Reference number
ISO 10773:2011(E)
©
ISO 2011

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SIST EN ISO 10773:2011
ISO 10773:2011(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
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Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

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SIST EN ISO 10773:2011
ISO 10773:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 10773 was prepared by Technical Committee ISO/TC 221, Geosynthetics.

© ISO 2011 – All rights reserved iii

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SIST EN ISO 10773:2011

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SIST EN ISO 10773:2011
INTERNATIONAL STANDARD ISO 10773:2011(E)

Clay geosynthetic barriers — Determination of permeability to
gases
1 Scope
This International Standard specifies a method for measuring gas flow through a clay geosynthetic barrier.
As clay geosynthetic barriers are used to contain gases in long-term applications, this test especially focuses
on the steady state of the phenomenon.
−5 3
The test is conducted with nitrogen, e.g. N (η = 1,75 × 10 Pa⋅s, ρ = 1,15 kg/m at 20 °C).
2
The test method and described apparatus allow the measurement of gas flows in the range 0,1 ml/min to
5 l/min on specimens with moisture contents in the range of 90 % to 130 %.
2 Normative references
The following referenced documents are indispensable for the application 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 554, Standard atmospheres for conditioning and/or testing — Specifications
3 Principle
Clay geosynthetic barrier specimens are hydrated in a controlled manner before testing. From the plot of gas
flow to moisture content under a normal load of 20 kPa and a differential pressure equal to 15 kPa, a gas flow
index, GFI , is determined, which is the gas flow at 110 % moisture content.
110/15
4 Apparatus
4.1 General
The apparatus includes:
⎯ a device allowing to load the specimen at a constant normal stress of 20 kPa (see 4.2);
⎯ a test cell (see 4.3);
⎯ a device to apply inlet pressure in the upstream chamber (in contact with the upper face of the sample)
(see 4.4);
⎯ a device for measuring gas flow (see 4.5).
4.2 Loading device
The loading device shall allow the application of the normal stress of 20 kPa with a tolerance of 5 % either by
direct loading or with a controlled air supply.
© ISO 2011 – All rights reserved 1

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SIST EN ISO 10773:2011
ISO 10773:2011(E)
4.3 Test cell
The test cell presented in Figure 1 shall allow:
⎯ the testing of a specimen representative of the bulk clay geosynthetic barrier, where the diameter D of
u
the flow cross-section is greater than or equal to 150 mm which makes it possible to study needle-
punched and stitch geosynthetic clay barriers;
⎯ the measurement of thickness reduction under a 20 kPa normal stress until stabilization;
⎯ after stabilization of the thickness, the measurements of the evolution of the gas flow at the outlet with
time.
The test cell shall have two chambers, one on each side of the specimen to accommodate the support
material (lower chamber) and containment material (upper chamber). This material shall consist of glass
beads, 1 mm to 2 mm diameter, lik
...