BS-EN-1847-2001.pdf

BRITISH STANDARD BS EN 1847:2001 Flexible sheets for waterproofing Plastic and rubber sheets for roof waterproofing Methods for exposure to liquid chemicals, including water The European Standard EN 1847:2001 has the status of a British Standard ICS 91.100.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 1847:2001 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 March 2001 © BSI 03-2001 ISBN 0 580 37013 5 National foreword This British Standard is the official English language version of EN 1847:2001. The UK participation in its preparation was entrusted by Technical Committee B/546, Flexible sheets for waterproofing, to Subcommittee B/546/2, Roof sheeting and sealing sheeting, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 1847 January 2001 ICS 83.140; 91.060.20 English version Flexible sheets for waterproofing Plastic and rubber sheets for roof waterproofing Methods for exposure to liquid chemicals, including water Feuilles souples d'étanchéité Feuilles d'étanchéité de toiture plastiques et élastomères Méthodes d'exposition aux produits chimiques liquides, y compris l'eau Abdichtungsbahnen Kunststoff- und Elastomerbahnen für Dachabdichtungen Bestimmung der Einwirkung von Flüssigchemikalien, einschließlich Wasser This European Standard was approved by CEN on 2 December 2000. 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 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1847:2001 E Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 1847:2001 © BSI 03-2001 Contents Page Foreword. 3 Introduction 3 1Scope 3 2Normative references 3 3Terms and definitions. 4 4Principle . 4 5Apparatus. 4 6Sampling 4 7Preparation of test specimens. 4 8Procedure. 5 9Expression of results 9 10Test report 11 11Remark . 11 Annex A (informative) Calibration of apparatus 12 Bibliography. 13 Tables Table 1 Standard aqueous solutions. 5 Table 2 Notation scale. 8 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 1847:2001 © BSI 03-2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 254, Flexible sheets for waterproofing, 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 July 2001, and conflicting national standards shall be withdrawn at the latest by July 2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Introduction This European Standard is intended for characterisation and/or classification of plastic and rubber sheets as manufactured or supplied before use. This test method relates exclusively to products, or to their components where appropriate, and not to waterproofing membrane systems composed of such products and installed in the works. This test is intended to be used in conjunction with the European Standard “Definitions and Characteristics” for plastic and rubber sheets for roof waterproofing. 1 Scope This European Standard specifies a method of exposing test specimens of plastic and rubber sheets for roofing, free from all external restraint, to liquid chemicals (including water), and methods for determining the changes in properties resulting from such exposure. Only testing by immersion of the entire surface of the test specimen is considered. The methods for determination of changes in properties are specified as follows: a) changes in mass immediately after immersion or after immersion and drying; b) changes in dimensions immediately after immersion or after immersion and drying; c) changes in appearance immediately after immersion or after immersion and drying; and d) changes in physical properties immediately after immersion or after immersion and drying. Tests immediately after immersion are used when it is required to ascertain the state of the material while still acted upon by the liquid. Tests after immersion and drying are used when it is required to ascertain the state of the material after the liquid, if it is volatile, has been eliminated. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest editions of the publication referred to apply (including amendments). EN 495-5, Flexible sheets for waterproofing Determination of foldability at low temperature Part 5: Plastic and rubber sheets for roof waterproofing. EN 1107-2, Flexible sheets for waterproofing Determination of dimensional stability Part 2: Plastic and rubber sheets for roof waterproofing. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 1847:2001 © BSI 03-2001 prEN 1849-2:2000, Flexible sheets for waterproofing Determination of thickness and mass per unit area Part 2: Plastic and rubber sheets for roof waterproofing. prEN 13416:1998, Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling. EN ISO 175:2000, Plastics Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:1999). 3 Terms and definitions For the purpose of this standard no additional terms and definitions are required. 4 Principle Complete immersion of the test specimens in a specified quantity of a test liquid for a specified time and at a specified temperature. Determination of the properties before and after immersion and, if applicable, after drying. In the latter case the determinations are made, if possible, one after the other on the same specimens. 5 Apparatus 5.1Container, beakers of suitable dimensions and fitted with lids (airtight, if necessary, and fitted with condensers in the case of volatile liquids or those which give off vapours). 5.2Enclosure, which is thermostatically controlled at the test temperature. 5.3Thermometer, of suitable range and accuracy. 5.4Weighing bottle. 5.5Balance, which is accurate to within 0,001 g in the case of specimens of mass equal to or greater than 1 g. 5.6Dial micrometer, with flat anvils, accurate to 0,01 mm. 5.7Caliper gauge, capable of measuring to an accuracy of 0,1 mm. 5.8Ventilated oven, the temperature calibration procedure is described in annex A.1 and details on the air flow are given in annex A.2. For drying purposes, the oven shall be controlled at (50 ± 2) °C. 6 Sampling Samples shall be taken in accordance with prEN 13416:1998. 7 Preparation of test specimens Depending on the proposed test after exposure (mass, dimensions, physical properties) and the nature of the plastic or rubber roof waterproofing sheet, the specimens will be of very diverse shapes and dimensions. The number of specimens to be used will be specified by the methods to determine the properties before and after exposure. In the absence of any other instructions, at least three specimens shall be tested. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 1847:2001 © BSI 03-2001 Condition the test specimens, prior to testing, for at least 24 h in a standard atmosphere of (23 ± 2) °C and (50 ± 5) % relative humidity. 8 Procedure 8.1 Test liquids If information is required about the behaviour of the sheet in contact with a specific liquid, that liquid shall, as a rule, be used. The test shall be carried out with defined chemical products, used on their own or as a mixture; the test should be as representative as possible of the effect on the waterproofing sheets. For general evaluations of materials behaviour exposed to aqueous liquids the specimens shall be stored in aqueous solutions as shown in Table 1. Table 1 Standard aqueous solutions Test liquidNotes 1 10 % sodium chloride (NaCl) solution (salt water) As specified in Table A.1 of EN ISO 175:2000 2Milk of lime, Ca(OH)2Saturated solution with deposit 35 % to 6 % sulfurous acid, H2SO3 If other liquids need to be agreed on for exposure, listings of laboratory chemicals are available, e.g. EN ISO 175:2000. 8.2 Temperature The preferred immersion temperatures are (23 ± 2) °C and (50 ± 2) °C. The temperature for the determination of changes in properties is (23 ± 2) °C. If the immersion temperature is different, bring the specimens to ambient temperature by transferrring them into a fresh quantity of test liquid at room temperature for 15 min to 30 min. 8.3 Exposure durations Any practicable exposure duration, representative of the phenomenon to be evaluated, may be applied. The preferred exposure durations for comparison tests are: a) Short duration test:24 h; b) Standard duration test:1 week (particularly at 23 °C); c) Long duration test:16 weeks. 8.4 Immersion procedure 8.4.1 Quantity of test liquid The quantity of test liquid used shall be at least 8 ml per square centimetre of the total surface area of the specimen in order to avoid a concentration of the extracted product in the liquid during the course of the test. The test liquid shall cover the specimen completely. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 09:23:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 1847:2001 © BSI 03-2001 8.4.2 Positioning of specimens Place each set of test specimens in a given container and completely immerse them in the test liquid (using a weight if necessary). When several materials of the same composition are to be tested, it is permissible to put several sets of specimens into the same container. In all cases, no significant proportion of the surfaces of the specimens shall make contact with the surface of other specimens, the walls of the container, or any weight that is used. During the test, stir the liquid, for example by rotating the containers, at least once a day. If the test lasts longer than seven days, replace the liquid with an equal amount of the original liquid every seventh day. If the liquid is unstable, replace the liquid more frequently. If light is likely to have influence on the action of the test liquid, it is recommended to operate either in darkness or in defined illumination conditions. It may be necessary in certain cases (for example if there is risk of oxidation) to specify the height of the liquid level above the specimens. 8.4.2 Rinsing and wiping At the end of the period of immersion, bring the temperature of the specimens back to ambient temperature if necessary, by transferring them quickly into fresh quantity of test liquid at room temperature, for a period of 15 min to 30 min. Remove the specimens from the test liquid and rinse them with a product which has no effect on the material under test and which is chosen to suit the nature of the test liquid. Wipe the specimens dry with filter paper or a lint free cloth. 8.5 Determination of changes in mass 8.5.1 Test specimen The test specimen shall have the shape and dimensions specified in prEN 1849-2:2000 for the determination of mass per unit area. Prepare the number of specimens to determine the mass per unit area according to prEN 1849-2:2000. If elevated temperature is used during the exposure, prepare additional specimens to serve as a control of any temperature influence. Control of other influences need additional quantities of specimens. 8.5.2 Initial value Determine the initial mass M1 of each specimen to the nearest 0,001 g in the case of specimens of mass greater than or equal to 1 g, following prEN 1849-2:2000. 8.5.3 Exposure Immerse the test specimens in the test liquid at the chosen temperature for the chosen period, following the immersion procedur