EN 14150:2006

Geosynthetic barriers - Determination of permeability to liquids

This European Standard specifies a method for measuring the steady-state liquid flow through a geosynthetic barrier, used to contain liquids in long-term applications.
The test method and described apparatus allow the measurement of flows accurately down to 10-6 m3/m2/day. In particular circumstances where testing indicates that values obtained for a geosynthetic barrier lie below the threshold of sensitivity of this test method, then the value of liquid flow is declared as being less than
10-6 m3/m2/day.
Due to its long duration this test method is not suitable for production control testing.
Geosynthetic clay liners cannot be tested with this apparatus.

Geosynthetische Dichtungsbahnen - Bestimmung der Flüssigkeitsdurchlässigkeit

Diese Europäische Norm legt ein Verfahren zur Messung des stationären Flüssigkeitsdurchflusses durch eine geosynthetische Dichtungsbahn fest, die eingesetzt wird, um Flüssigkeiten bei Langzeitanwendungen aufzunehmen.
Das Prüfverfahren und die beschriebenen Prüfeinrichtungen ermöglichen die genaue Messung von Durchflüssen bis zu 10 6 m3 × m-2 × d-1. Unter besonderen Umständen, wenn die Prüfung ergibt, dass die für die geosynthetischen Dichtungsbahnen ermittelten Werte unterhalb des Schwellenwertes dieses Prüfverfahrens liegen, wird der Wert des Flüssigkeitsdurchflusses mit weniger als 10 6 m3 × m-2 × d-1 angegeben.
Wegen der langen Prüfungsdauer ist dieses Prüfverfahren nicht für die werkseigene Produktionskontrolle geeignet.
Geosynthetische Tondichtungsbahnen können mit dieser Prüfeinrichtung nicht geprüft werden.

Géomembranes - Détermination de la perméabilité aux liquides

La présente Norme européenne spécifie une méthode pour mesurer le flux d’un liquide en régime permanent à travers une géomembrane utilisée pour contenir des liquides dans des applications de longue durée.
La méthode d’essai et l’appareillage décrit permettent le mesurage de flux inférieurs ou égaux à 10 6 m3/m2/j 1. Dans le cas particulier où, lors de l’essai, les valeurs obtenues pour une géomembrane sont inférieures au seuil de sensibilité de la présente méthode, la valeur de flux du liquide est alors déclarée inférieure à 10 6 m3/m2/j 1.
En raison de sa longue durée, la présente méthode d’essai ne convient pas aux essais de contrôle de production.
Les géosynthétiques bentonitiques ne peuvent être soumis à l’essai au moyen du présent appareillage.

Geosintetične ovire – Ugotavljanje prepustnosti za tekočine

General Information

• Status: Withdrawn
• Publication Date: 06-Jun-2006
• Withdrawal Date: 11-Jun-2019
• ICS: 59.080.70 - Geotextiles
• Technical Committee: CEN/TC 189 - Geotextiles and geotextile-related products
• Drafting Committee: CEN/TC 189/WG 4 - Hydraulic testing
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 12-Jun-2019
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN 14150:2006 - Geosynthetic barriers - Determination of permeability to liquids

Relations

• Replaced By: EN 14150:2019 - Geosynthetic barriers - Determination of permeability to liquids
• Effective Date: 19-Jun-2019

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Geosynthetic barriers - Determination of permeability to liquidsGéomembranes - Détermination de la perméabilité aux liquidesGeosynthetische Dichtungsbahnen - Bestimmung der FlüssigkeitsdurchlässigkeitTa slovenski standard je istoveten z:EN 14150:2006SIST EN 14150:2006en59.080.70GeotekstilijeGeotextilesICS:SLOVENSKI
STANDARDSIST EN 14150:200601-oktober-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14150June 2006ICS 59.080.70 English VersionGeosynthetic barriers - Determination of permeability to liquidsGéomembranes - Détermination de la perméabilité auxliquidesGeosynthetische Dichtungsbahnen - Bestimmung derFlüssigkeitsdurchlässigkeitThis European Standard was approved by CEN on 4 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14150:2006: E

10-6 m3/m2/day. Due to its long duration this test method is not suitable for production control testing. Geosynthetic clay liners cannot be tested with this apparatus. 2 Normative references Not applicable 3 Principle A differential hydraulic pressure is applied between the two sides of a geosynthetic barrier. It is kept constant during the test at 100 kPa, the upstream pressure being set to 150 kPa, and the downstream pressure to
50 kPa. The flow through the geosynthetic barrier is calculated from the variations of the liquid volume measured on both sides of the geosynthetic barrier. NOTE 1 This test is conducted with water, but can also be performed with other liquids, providing chemical resistance and compatibility of the apparatus is ensured. NOTE 2 In the light of laboratory experience, test procedural improvement and equipment enhancement the sensitivity threshold of the test procedure should be reviewed and the applicability of the test procedure to the product permeability assessed at regular intervals, not exceeding 12 months. 4 Apparatus 4.1 Cell The two-part cell (see Figure 1) is made of stainless steel. The cell shall resist to oxidation during long-term immersion. In each part of the cell, a cavity allows to apply a hydraulic pressure. A porous disc placed in the downstream cavity prevents deformations of the geosynthetic barrier.

Key 1 downstream part 2 upstream part 3 geosynthetic barrier 4 porous plate
U water inlet D water outlet FU flushing valve upstream FD flushing valve downstream Figure 1 — Schematic representation of a test cell The cell shall be designed to clamp the specimen without any leaks. There is no tightening system necessary, as clamping between flat surfaces is usually sufficient. For some materials, a sealant may be necessary. Any sealant non-sensitive to water and avoiding leaks can be used. In the case of bituminous geosynthetic barriers, a bitumen rubber sealant can be used. The measuring chambers shall have a nominal diameter equal to or greater than 200 mm. This diameter shall be measured with an accuracy equal to or better than 1 mm. The cell is equipped with a liquid inlet on the upstream part (U-valve) and a liquid outlet on the downstream part (D-valve) and flushing valves on each part (FU- and FD-valves). The cell should be oriented vertically to allow an easier and better air flushing. The flushing valves (FU and FD) should be placed on top of the cell and the inlet (U) and outlet (D) should be on the bottom of the cell. NOTE The cell can also include, on both parts, a ring-shaped control chamber. The downstream control chamber will be equipped with a porous ring-shaped plate. Each ring-shaped chamber will be connected to an independent volume measuring device and a pressure delivery system, in order to apply the same pressure as in the corresponding measuring chamber. These ring-shaped chambers are there to minimise deformation in the measuring chamber. 4.2 Volume measuring devices and pressure delivery system These two devices are generally associated. The volume measuring equipment shall be able to measure liquid flows through the geosynthetic barrier smaller than 10-6 m3 /m2/day. The accuracy of the volume measurement shall be at least 10-8 m3. The accuracy of the pressure applied on each side of the geosynthetic barrier shall be ± 2 kPa. The volume measurements can be achieved using capillary tubes (Type A device) or pressure-volume controllers (Type B device).

Key 1 capillary tubes 2 vessel 3 upstream pressure 4 downstream pressure 5 thermostatic chamber (to ± 0,1 °C) 6 geosynthetic barrier
WU water regulator valve upstream WD water regulator valve downstream FU flushing valve upstream FD flushing valve downstream U water inlet D water outlet Figure 2 — Schematic representation of a Type A volume measuring device — Type B (see Figure 3): this device allows the application of a constant pressure when measuring the volume. It consists of a cylinder in which a piston slides. A numerically controlled motor enables the application of the required pressure by moving the piston. A pressure sensor included in the system measures the pressure. The piston displacement corresponds to a variation of the volume of liquid. The volume of the controllers should be greater than 10-4 m3.

Key 1 downstream controller 2 upstream controller 3 computer 4 temperature transducers 5 geosynthetic barrier
U water inlet D water outlet FU flushing valve upstream FD flushing valve downstream Figure 3 — Schematic representation of a Type B volume measuring device 4.3 Liquid supply It is recommended to use de-aired water (less than 1 mg/l of dissolved oxygen). De-aired liquid is necessary to minimize variations of volume due to temperature variations. NOTE If the test is conducted with other liquids, volatility and safety problems should be taken into account. 4.4 Temperature control When the test is carried out using a type A device then this shall be performed under a temperature of
(23 ± 0,2) °C (using a thermostatic chamber). When the test is carried out using a type B device then a temperature of (23 ± 1) °C (in a controlled temperature room) shall be used. With a type B device, at least three temperature transducers, placed on each pressure-volume controller and on the cell, should be used. Temperature measurements will then be used to correct volume variations
(see 8.2). The temperature is measured with a precision of 0,2 °C.
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