DIN EN 14030-2003 Geotextiles and geotextile-related products - Screening test method for determining the resistance to acid and alkaline liquids (ISO TR 12960 1998 modified) (incl.pdf

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1、ICS 59.080.70Geotextilien und geotextilverwandte Produkte Auswahlprfverfahrenzur Bestimmung der Bestndigkeit gegen Sure und alkalischeFlssigkeiten (ISO/TR 12960 : 1998, modifiziert)(enthlt nderung A1 : 2003)European Standard EN 14030 : 2001 + Amendment A1 : 2003 has the status of aDIN Standard.A com

2、ma is used as the decimal marker.National forewordThis standard has been prepared by CEN/TC 189 Geosynthetics (Secretariat: Belgium).The responsible German body involved in its preparation was the Normenausschuss Textil und Textil-maschinen (Textiles and Textile Machinery Standards Committee), Techn

3、ical Committee Geotextilien undGeokunststoffe.DIN ISO 3696 is the standard corresponding to International Standard ISO 3696 referred to in clause 2 ofthe EN.AmendmentsThis standard differs from the March 2002 edition in that additional requirements for apparatus, test liquidsand positioning of speci

4、mens have been specified.Previous editionsDIN V ENV ISO 12960: 1999-02; DIN EN 14030: 2002-03.Ref. No. DIN EN 14030 : 2003-11English price group 06 Sales No. 110603.04DEUTSCHE NORM November 2003EN 14030EN comprises 6 pages. No part of this standard may be reproduced without the prior permission ofDI

5、N Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Geotextiles and geotextile-related productsScreening test method for determining the resistance to acid and alkalineliquids (ISO/TR 12960 : 1998,

6、modified) (includes Amendment A1 : 2003)English version of DIN EN 14030 : 2001 + A1 : 2003Supersedes March 2002edition.EN 14030March 2001+ A1August 2003English versionICS 59.080.70 Supersedes EN 14030 : 2001.Management Centre: rue de Stassart 36, B-1050 BrusselsEuropean Committee for Standardization

7、Comit Europen de NormalisationEuropisches Komitee fr NormungGeotextiles and geotextile-related productsScreening test method for determining the resistance to acid andalkaline liquids (ISO/TR 12960 : 1998, modified)(includes Amendment A1 : 2003) 2003. CEN All rights of exploitation in any form and b

8、y any meansreserved worldwide for CEN national members.Ref. No. EN 14030 : 2001 + A1 : 2003 EGotextiles et produits apparentsaux gotextiles Mthode dessaislective pour la dtermination de larsistance aux liquides acides etalcalins (ISO/TR 12960 : 1998, modi-fi) (amendement A1 : 2003 inclus)Geotextilie

9、n und geotextilverwandteProdukte Auswahlprfverfahren zurBestimmung der Bestndigkeit gegenSure und alkalische Flssigkeiten(ISO/TR 12960 : 1998, modifiziert)(enthlt nderung A1 : 2003)This European Standard was approved by CEN on 2001-09-29 and AmendmentA1 on 2003-06-12.CEN members are bound to comply

10、with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such national stand-ards may be obtained on application to the Management Centr

11、e or to any CENmember.The European Standards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official versions.

12、CEN members are the national standards bodies of Austria, Belgium, the CzechRepublic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland,Ireland, Italy, Luxembourg, Malta, the Netherlands, Norway, Portugal, Slovakia,Spain, Sweden, Switzerland, and the United Kingdom.Page 2EN 14030 : 2001 +

13、A1 : 2003Foreword to EN 14030 : 2001This European Standard has been prepared by Technical Committee CEN/TC 189 Geosynthetics, the Sec-retariat of which is held by IBN.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement,

14、 and conflicting national standards withdrawn, by May 2002 at the latest.In accordance with the CEN/CENELEC Internal Regulations, the national standards organizations of the fol-lowing countries are bound to implement this European Standard:Austria, Belgium, the Czech Republic, Denmark, Finland, Fra

15、nce, Germany, Greece, Iceland, Ireland,Italy, Luxembourg, Malta, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and theUnited Kingdom.Foreword to EN 14030 : 2001/A1 : 2003This amendment to EN 14030:2001 has been prepared by Technical Committee CEN/TC 189 Geosynthet-ics, the Secretari

16、at of which is held by IBN.This amendment shall be given the status of a national standard, either by publication of an identical text or byendorsement, and conflicting national standards withdrawn, by February 2004 at the latest.In accordance with the CEN/CENELEC Internal Regulations, the national

17、standards organizations of the fol-lowing countries are bound to implement this European Standard:Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland,Ireland, Italy, Luxembourg, Malta, the Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerla

18、nd,and the United Kingdom.IntroductionIn nearly all applications, geotextiles and geotextile-related products (geotextile products) may be in contactwith aqueous solutions of acids, bases or dissolved oxygen. The resistance of geotextile products to thesechemicals depends both on polymer formulation

19、, processing, textile structure and the presence of existingdamage, and on the composition of the liquid and in-situ conditions, such as temperature, pressure and thepresence of further mechanical stress.It is the purpose of this standard to provide a method of screening (index testing) the resistan

20、ce of geotextileproducts to these acids and bases.Since an index test requires exposure times that are short as compared to the expected lifetimes of geotextileproducts, it is necessary to accelerate the process. The data obtainable are suitable for screening but not forderiving performance data suc

21、h as lifetime, unless supported by further evidence.NOTE This standard should be used in conjunction with CR ISO 13434.Page 3EN 14030 : 2001 + A1 : 20031 ScopeThis standard specifies methods for screening the resistance of geotextile products to liquids while not sub-jecting them to external mechani

22、cal stress.The standard is applicable to all geotextiles and geotextile related products. Method A applies particularly topolyamides and method B to polyesters and polyamides. The test results should be interpreted in the contextof site conditions.NOTE This standard only considers conditions where t

23、he specimens are fully immersed in the liquids. Althoughoutside the scope of this standard, the test conditions may be modified to accommodate particular applications, e.g.gaseous media. This standard does not preclude use for test specimens that are pre-treated by some method (e.g. byweathering, aq

24、ueous extraction conditions or installation damage).2 Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text, and the publications are listedhereafter. For d

25、ated references, subsequent amendments to or revisions of any of these publications apply tothis European Standard only when incorporated in it by amendment or revision. For undated references, thelatest edition of the publication referred to applies (including amendments).EN 12226, Geotextiles and

26、geotextile-related products General tests for evaluation following durability test-ing.ISO 3696 : 1987, Water for analytical laboratory use Specification and test methods.3 PrincipleTest specimens are completely immersed in a test liquid for a given test duration at a fixed temperature. Thepropertie

27、s of the test specimens are tested before and after immersion and if applicable after drying, andwherever possible, the test results are compared with those of control specimens stored under reference con-ditions.4 General requirements and procedure4.1 ApparatusA container (e.g. a pneumatic vessel)

28、is to be used, equipped with: a sealing lid or equivalent device and if necessary a reflux condenser or equivalent device to restrictevaporation of volatile components; a stirring or equivalent device to maintain homogeneity of the liquid and the exchange of matter betweenthe liquid and the specimen

29、s; specimen holders to ensure correct placing of the specimens (see 4.6.2), the free distance betweenspecimens being at least 10 mm; at least one closable aperture in the lid for access to control the composition of the liquid; a device for passing air into the liquid to ensure full air saturation.G

30、50G61G67G65 G34G45G4E G31G34G30G33G30 G3A G32G30G30G31 G2B G41G31 G3A G32G30G30G33The container shall be large enough for the test liquid (see 4.6.1), which shall be held at constant temperature(see 4.3).The material of the container and equipment shall be resistant to the test chemicals. Such mater

31、ials are ingeneral borosilicate glass or stainless steel.4.2 Test liquidsTwo types of test liquids are to be used: an inorganic acid: 0,025 M sulfuric acid, with 1 mMol ferrisulafte and 1 mMol ferrosulfate added(method A); an inorganic base: calcium hydroxide (Ca(OH)2), used as a saturated suspensio

32、n, i.e. approximately2,5 grams per litre (method B).Chemicals or reagents of analytical grade should be used. Water shall comply with ISO 3696 : 1987, grade 3.National safety regulations for handling chemicals and for disposal of test liquids shall be followed.NOTE For any test medium it is essentia

33、l that its composition does not change during the test exposure. This maybe difficult if the concentration of any active component is low or if the liquid is not a stable one-phase system. In suchcases, the concentration should be monitored and if possible adjusted or replaced on a regular basis. At

34、tention shouldbe paid also to possible catalytic or synergistic effects, including effects of simultaneous chemical and mechanicalstresses (e.g. environmental stress cracking in polyolefins). The choice of the concentration of the active species is gov-erned by the aim to avoid significant changes o

35、f the concentration during the test and to accelerate the reaction but toavoid a change in the active mechanism by using too high a concentration.4.3 Test temperaturesThe test temperature shall be (60 1) C for each method.4.4 Test durationThe test duration shall be three days for each method.4.5 Spe

36、cimensReference is made to EN 12226.The number of specimens shall be five test specimens and five control specimens.NOTE 1 It is recommended that additional specimens be exposed. If a mechanical test is invalid, a further specimenshould be tested in its place.NOTE 2 If the products are sheathed by s

37、ome coating, which could be penetrated during installation, the productshould be tested with and without the coating. If not, the possibility of a change in chemical resistance in case of de-struction or damage to the sheath should be noted in the report.4.6 Procedure4.6.1 Quantity of the test liqui

38、dThe quantity of test liquid shall be greater than 30 times the weight of the specimens and shall cover thespecimens completely.Page 5EN 14030 : 2001 + A1 : 20034.6.2 Positioning of specimensThe specimens shall be placed in the vessel free of any significant mechanical stress.The mean distance betwe

39、en the specimens, between the specimens and the walls of the vessel, and betweenthe specimens and the surface of the liquid, shall be at least 1 cm. No significant proportion of the surface ofthe specimens shall make contact with a material other than the test liquid itself.Specimens of different ma

40、terials shall not be tested in the same vessel. During the test the exchange of mat-ter between liquid and geotextile shall not be hindered by poor convection of the test liquid.Calcium hydroxide shall be stirred continuously, sulfuric acid at least once per day. Sulfuric acid shall bestirred and sa

41、turated by continuously passing air into it. The pH of the liquid shall be measured from the be-ginning and recorded continually and, where necessary, liquid shall be replenished or replaced to maintain theoriginal pH at least every seventh day. The liquid and the specimens shall be shielded from li

42、ght.4.6.3 Control specimensControl specimens shall be immersed for one hour in water at the same temperature as the test specimens.Water shall be in accordance with 4.2.4.6.4 Rinsing, wiping and dryingRinsing shall be performed in water complying with 4.2, then in 0,01 M sodium carbonate solution, f

43、inally inwater again. The quantities shall be sufficient to ensure thorough cleaning.In exposing polyester geotextiles to calcium hydroxide it is necessary to remove adhering crystals of calciumterephthalate. This may be done by rinsing for 5 min with a 10 % solution (by mass) of trisodiumnitrilotri

44、-acetate (NTA) in an agitating device, followed by rinsing in a 3 % solution (by mass) of acetic acid and finallyrinsing with water.Specimens shall be dried at ambient temperature or at elevated temperature up to 60 C. Specimens shouldnot be subjected to undue stress during drying.4.7 Determination

45、of changes in propertiesThe changes are determined in accordance with EN 12226.5 Test reportThe test report shall contain particulars to the following items: reference to this standard; description of the material; results expressed in accordance with EN 12226; date of test; any deviations from this

46、 standard and any factors likely to have influenced the results.G50G61G67G65 G36G45G4E G31G34G30G33G30 G3A G32G30G30G31 G2B G41G31 G3A G32G30G30G33BibliographyISO 175, Plastics Methods of test for the determination of the effects of immersion in liquid chemicals.ISO 554, Standard atmospheres for conditioning and/or testing specificationsISO 3205, Preferred test temperatures.ISO 3301, Statistical interpretation of data Comparison of two means in the case of paired observations.CR ISO 13434, Guidelines on durability of geotextiles and geotextile-related products.