CEN/TS 14417:2014
(Main)Geosynthetic barriers - Test method for the determination of the influence of wetting-drying cycles on the permeability of clay geosynthetic barriers
Geosynthetic barriers - Test method for the determination of the influence of wetting-drying cycles on the permeability of clay geosynthetic barriers
This Technical Specification describes an index test to determine the influence ratio of wetting-drying cycles on the flux through saturated clay geosynthetic barrier specimens.
This test method is applicable to GBR-C products with no additional sealing layers attached.
Geosynthetische Dichtungsbahnen - Prüfverfahren zur Bestimmung des Einflusses von Nass-Trocken-Zyklen auf die Wasserdurchlässigkeit von geosynthetischen Tondichtungsbahnen
Diese Technische Spezifikation beschreibt ein Indexprüfverfahren zur Bestimmung des Einflussverhältnisses von Nass Trocken Zyklen auf den Durchfluss durch Messproben von gesättigten geosynthetischen Tondichtungsbahnen.
Dieses Prüfverfahren ist auf GBR C Produkte ohne zusätzliche angebrachte Abdichtungslagen anwendbar.
Géosynthétiques bentonitiques - Méthode d'essai pour la détermination de l'influence de cycles humidification/dessiccation sur la perméabilité des géosynthétiques bentonitiques
La présente spécification technique décrit un essai index visant à évaluer le rapport d'influence des cycles humidification/dessiccation sur le flux à travers des éprouvettes de géosynthétiques bentonitiques (GSB) saturés.
Cette méthode d'essai s'applique aux géosynthétiques bentonitiques sans couches d’étanchéité additionnelles.
Geosintetične ovire - Preskusna metoda za ugotavljanje vpliva ciklusov močenja-sušenja na prepustnost geosintetičnih bentonitnih ovir
Te tehnične specifikacije CEN opisujejo preskušanje indeksa za ugotavljanje vpliva razmerja ciklusov močenja-sušenja na pretok skozi nasičene geosintetične bentonitne ovire.
Ta preskus se uporablja za izdelke GBR-C brez dodatnih tesnilnih plasti.
General Information
- Status
- Published
- Publication Date
- 14-Oct-2014
- Technical Committee
- CEN/TC 189 - Geotextiles and geotextile-related products
- Drafting Committee
- CEN/TC 189/WG 4 - Hydraulic testing
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 15-Oct-2014
- Due Date
- 04-Oct-2015
- Completion Date
- 15-Oct-2014
- Directive
- 89/106/EEC - Construction products
Relations
- Effective Date
- 22-Oct-2014
Overview
CEN/TS 14417:2014 specifies an index test method to assess how repeated wetting‑drying cycles affect the permeability (flux) of clay geosynthetic barriers (GBR‑C). The Technical Specification defines a laboratory procedure to determine an influence ratio - the percent change in saturated water flux of a clay geosynthetic specimen after exposure to wetting‑drying cycles compared with an unexposed reference. This method is applicable to GBR‑C products without additional sealing layers and is intended to isolate the effect of wetting‑drying (not other processes such as cation exchange).
Key topics and technical requirements
- Purpose: Determine the influence ratio R = (q_test / q_reference) × 100, where q is saturated flux (m3/m2·s).
- Specimens: Cut from bulk GBR‑C to template size ≥ 200 mm, then later extract 100 ± 2 mm diameter specimens for flux testing.
- Conditioning cycle:
- Saturation: submerged in de‑ionized water (EN ISO 3696, grade 3) at (4 ± 0.2) kPa for 48 h.
- Drying: oven at (110 ± 5) °C for 24 h under (4 ± 0.2) kPa.
- Cooling: allow to cool at standard room atmosphere (ISO 554) for minimum 24 h.
- Repeat the wetting‑drying cycle four times before cutting the test specimen.
- Apparatus: template, waterproof box, rigid pressure plate (≥10 mm thick), weights to provide (4 ± 0.2) kPa, mechanically bonded nonwoven geotextile (250 ± 50 g/m2).
- Flux measurement: Use a flexible‑wall permeameter at constant head in accordance with EN 16416 to obtain flux values for both test and reference specimens.
- Data & reporting: Record conditioning times and all flux measurements; report influence ratio, specimen identification (EN ISO 10320), conditioning atmosphere, and any deviations.
Applications and users
- Who uses it: geosynthetic manufacturers, independent testing laboratories, geotechnical and environmental engineers, specifiers and quality managers involved in containment and lining systems.
- Practical uses:
- Evaluate durability of bentonitic geosynthetic liners exposed to cyclic moisture changes.
- Support product development, quality control and comparative performance claims for GBR‑C.
- Inform material selection and design considerations for landfill liners, containment systems, pond liners and other earth‑construction works where drying and rewetting may occur.
- Limitations: The test is an index method and does not represent full in‑service flux - it isolates wetting‑drying effects only.
Related standards
- EN 16416 - Geosynthetic clay barriers: flexible wall permeameter method (flux measurement)
- EN ISO 3696 - Water for analytical laboratory use
- EN ISO 10320 - On‑site identification of geotextile products
- ISO 554 - Standard atmospheres for conditioning/testing
Keywords: geosynthetic barriers, clay geosynthetic barriers, wetting‑drying cycles, permeability test, influence ratio, GBR‑C, flexible wall permeameter, bentonitic geosynthetics.
Frequently Asked Questions
CEN/TS 14417:2014 is a technical specification published by the European Committee for Standardization (CEN). Its full title is "Geosynthetic barriers - Test method for the determination of the influence of wetting-drying cycles on the permeability of clay geosynthetic barriers". This standard covers: This Technical Specification describes an index test to determine the influence ratio of wetting-drying cycles on the flux through saturated clay geosynthetic barrier specimens. This test method is applicable to GBR-C products with no additional sealing layers attached.
This Technical Specification describes an index test to determine the influence ratio of wetting-drying cycles on the flux through saturated clay geosynthetic barrier specimens. This test method is applicable to GBR-C products with no additional sealing layers attached.
CEN/TS 14417:2014 is classified under the following ICS (International Classification for Standards) categories: 59.080.70 - Geotextiles. The ICS classification helps identify the subject area and facilitates finding related standards.
CEN/TS 14417:2014 has the following relationships with other standards: It is inter standard links to CEN/TS 14417:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
CEN/TS 14417:2014 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
CEN/TS 14417:2014 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2014
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SIST-TS CEN/TS 14417:2006
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Geosynthetic barriers - Test method for the determination of the influence of wetting-
drying cycles on the permeability of clay geosynthetic barriers
Geosynthetische Dichtungsbahnen - Prüfverfahren zur Bestimmung des Einflusses von
Nass-Trocken-Zyklen auf die Wasserdurchlässigkeit von geosynthetischen
Tondichtungsbahnen
Géosynthétiques bentonitiques - Méthode d'essai pour la détermination de l'influence de
cycles humidification/dessiccation sur la perméabilité des géosynthétiques bentonitiques
Ta slovenski standard je istoveten z: CEN/TS 14417:2014
ICS:
59.080.70 Geotekstilije Geotextiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION
CEN/TS 14417
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
October 2014
ICS 59.080.70 Supersedes CEN/TS 14417:2005
English Version
Geosynthetic barriers - Test method for the determination of the
influence of wetting-drying cycles on the permeability of clay
geosynthetic barriers
Géosynthétiques bentonitiques - Méthode d'essai pour la Geosynthetische Dichtungsbahnen - Prüfverfahren zur
détermination de l'influence de cycles Bestimmung des Einflusses von Nass-Trocken-Zyklen auf
humidification/dessiccation sur la perméabilité des die Wasserdurchlässigkeit von geosynthetischen
géosynthétiques bentonitiques Tondichtungsbahnen
This Technical Specification (CEN/TS) was approved by CEN on 21 July 2014 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
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, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14417:2014 E
worldwide for CEN national Members.
Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Principle .5
5 Apparatus .5
6 Reagent .6
7 Procedure .6
7.1 Specimen preparation .6
7.2 Specimen hydration .6
7.3 Specimen drying .7
7.4 Specimen cooling .7
7.5 Repetition .7
7.6 Preparation of specimen for flux testing .7
8 Calculation and expression of results .8
8.1 Recording of data .8
8.2 Calculation and expression of results .8
9 Test report .8
Foreword
This document (CEN/TS 14417:2014) has been prepared by Technical Committee CEN/TC 189
“Geosynthetics”, the secretariat of which is held by NBN.
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.
This document supersedes CEN/TS 14417:2005.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
This Technical Specification defines a method for testing the influence ratio of wetting-drying cycles on the flux
through clay geosynthetic barriers. Such resistance is a requirement for many uses of these products.
The influence ratio is an indication of the behaviour of the product when exposed to repeated wetting and
drying cycles in earth constructions. The flux of saturated clay geosynthet
...
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