1、BS EN1849-2:2009ICS 91.100.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFlexible sheets forwaterproofing Determination ofthickness and mass perunit areaPart 2: Plastic and rubber sheetsThis British Standardwas published under theauthority of the StandardsPo
2、licy and StrategyCommittee on 30 June2010 BSI 2010ISBN 978 0 580 59214 0Amendments/corrigenda issued since publicationDate CommentsBS EN 1849-2:2009National forewordThis British Standard is the UK implementation of EN 1849-2:2009. Itsupersedes BS EN 1849-2:2001 which is withdrawn.The UK participatio
3、n in its preparation was entrusted to TechnicalCommittee B/546/2, Plastics and rubber sheets for Waterproofing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. User
4、s are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 1849-2:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1849-2 December 2009 ICS 91.100.50 Supersedes EN 1849-2:2001English Version Flexible sheets for waterpro
5、ofing - Determination of thickness and mass per unit area - Part 2: Plastic and rubber sheets Feuilles souples dtanchit - Dtermination de lpaisseur et de la masse surfacique - Partie 2: Feuilles dtanchit de toiture plastiques et lastomres Abdichtungsbahnen - Bestimmung der Dicke und der flchenbezoge
6、nen Masse - Teil 2: Kunststoff- und Elastomerbahnen fr Dachabdichtungen This European Standard was approved by CEN on 19 October 2009. 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 s
7、tandard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any ot
8、her language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estoni
9、a, 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 COMIT EUROPEN DE NORMALISATION EUROPI
10、SCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1849-2:2009: EBS EN 1849-2:2009EN 1849-2:2009 (E) 2 Contents Page Foreword . 3Introduction 41 Scope
11、52 Normative references . 53 Terms and definitions . 54 Sampling 75 Determination of thickness 75.1 Principle . 75.2 Apparatus 75.3 Test specimens . 75.4 Procedure 75.4.1 General . 75.4.2 Mechanical measurement 85.4.3 Optical measurement 85.5 Expression of results 86 Determination of mass per unit a
12、rea . 96.1 Principle . 96.2 Apparatus 96.3 Test specimens . 96.4 Procedure 96.5 Expression of results 97 Test report . 9Annex A (informative) Example of the cut cross-section of a membrane . 10BS EN 1849-2:2009EN 1849-2:2009 (E) 3 Foreword This document (EN 1849-2:2009) has been prepared by Technica
13、l 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 June 2010, and conflicting national standards s
14、hall be withdrawn at the latest by June 2010. 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 EN 1849-2:2001.
15、 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
16、 Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1849-2:2009EN 1849-2:2009 (E) 4 Introduction This European Standard is intended for characterisation of plastic and rubber sheets as man
17、ufactured 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 EN 13956, Flexible sheet f
18、or waterproofing Plastic and rubber sheets for roof waterproofing Definitions and characteristics. BS EN 1849-2:2009EN 1849-2:2009 (E) 5 1 Scope This European Standard specifies methods for the determination of the thickness and mass per unit area of plastic and rubber sheets for roof waterproofing.
19、 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. EN 13416, Flexible sheets
20、 for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 surface texture textured pattern on one or both surfaces of the sheet creating a difference betwee
21、n the effective and overall thickness not exceeding 0,15 mm NOTE See Figure 2 a) and c). 3.2 surface profile (surface structure) raised area on the surface of the sheet creating a difference between the effective and overall thickness exceeding 0,15 mm NOTE See Figure 2 b). 3.3 internal fabric layer
22、 of woven or non-woven fabric of synthetic or mineral fibres incorporated in the sheet. This layer may or may not constitute reinforcement NOTE See Figure 1 c). 3.4 backing layer of woven or non-woven fabric of synthetic or mineral fibres or other materials, fixed to the bottom of the sheet NOTE see
23、 Figure 2 d). 3.5 overall thickness d thickness of the sheet excluding any surface profile BS EN 1849-2:2009EN 1849-2:2009 (E) 6 3.6 effective thickness deffthickness of the sheet providing the waterproofing function including any surface texture but excluding any surface profile and backing a)c)b)K
24、ey a) homogeneous single layer sheet b) multi-layer sheet c) sheet with internal fabric Figure 1 Structure of the sheet d= deffa) b)c) d)d= deffd= deffdefdKey a) sheet with surface texture on one side b) sheet with surface profiles c) sheet with surface texture on both sides d) sheet with backing Fi
25、gure 2 Types of surfaces BS EN 1849-2:2009EN 1849-2:2009 (E) 7 4 Sampling Test samples shall be taken in accordance with EN 13416. 5 Determination of thickness 5.1 Principle The thickness is determined by a mechanical device unless there is a hindrance by a surface profile and/or backing. In this ca
26、se, optical measurement shall be used. 5.2 Apparatus 5.2.1 Measuring device Capable of indicating the thickness to an accuracy of 0,01 mm. The measuring surfaces shall be planar and have a diameter of (10 0,05) mm exerting a pressure of (20 10) kPa on the sheet surface. NOTE The determination of thi
27、ckness according to EN 12311-2 may also be done with a measuring diameter of (5 0,05) mm exerting a pressure of (20 10) kPa on the sheet surface for the dumbbell type. 5.2.2 Optical device For sheets with a surface profile and/or backing, capable of indicating the thickness to an accuracy of 0,01mm.
28、 5.3 Test specimens The test specimens shall be square or circular in form, and have an area of (10 000 100) mm2. Cut from the sheet n test specimens (see Table 1) evenly divided over the width b of the sheet, the outer specimen (100 10) mm from the edges (see Figure 3). Table 1 Required number of t
29、est specimens Width of the sheet b mm 4 701Number of test specimens n - 3 4 5 6 7 8 9 10 5.4 Procedure 5.4.1 General Condition the sample for at least 2 h at (23 2) C and (50 5) % relative humidity immediately before measuring. Ensure that the sample and the faces of the measuring device are free fr
30、om contamination for example dust. BS EN 1849-2:2009EN 1849-2:2009 (E) 8 Record all relevant thicknesses of the sheet once per test specimen to 0,01 mm. Calculation of the mean value and standard deviation is based on the readings of all test specimens. Dimensions in millimetres 2100 10 100 10212XXb
31、Key 1 test piece 2 test specimen b width of the sheet x constant distance between test specimens Figure 3 Example of cutting plan for 3 test specimens 5.4.2 Mechanical measurement Check the zero point of the measuring device before starting the measurements and recheck after each series of measureme
32、nts. When determining the thickness, lower the foot gently to avoid deforming the material. 5.4.3 Optical measurement Measure optically the thickness of a sheet with any surface profile and/or backing. The small specimens for optical measurements should not be longer than 10 mm. The small specimen s
33、hall be cut with a razor-sharp knife from each test specimen. The cut cross section of the specimen shall be installed in an angle of (90 5) to the direction of viewing, using a microscope. 5.5 Expression of results The overall thickness (d) shall be stated as the mean thickness of all test specimen
34、s. The effective thickness (deff) shall be stated as the mean thickness of all test specimens without taking into account any surface profile and/or backing. BS EN 1849-2:2009EN 1849-2:2009 (E) 9 State all the results of sheet thickness and standard deviation to the nearest 0,01 mm. NOTE Annex A sho
35、ws an example of a cross-section of a cut membrane. 6 Determination of mass per unit area 6.1 Principle The mass per unit area is determined by weighing a test specimen of known area. (The same specimens as used for determination of thickness may be used). 6.2 Apparatus Balance capable of indicating
36、 sample weight to an accuracy of 0,01 g. 6.3 Test specimens The test specimens shall be square or circular in form, and have an area of (10 000 100) mm2. Cut from the sheet n test specimens (see Table 1) evenly divided over the width b of the sheet, the outer specimen (100 10) mm from the edges (see
37、 Figure 3). 6.4 Procedure Condition the test specimens for 20 h at (23 2) C and (50 5) % relative humidity immediately before weighing. Weigh the test specimens to the nearest 0,01 g and calculate the mass per unit area, in g/m2. 6.5 Expression of results The mass per unit area shall be stated as th
38、e mean of the calculated values in g/m2rounded to the nearest 5 g/m2. 7 Test report The test report shall contain at least the following information: a) reference to this document (EN 1849-2) and any deviation from it; b) all details necessary to identify the product tested; c) information on sampli
39、ng in accordance with Clause 4; d) number of specimens tested; e) conditioning atmosphere used; f) presser-foot size for mechanical measurement of the thickness; g) details of preparation of test specimens in accordance with 5.3, 5.4.3 and 6.3 respectively; h) test results (mean values and standard
40、deviation to the nearest 0,01 mm) in accordance with 5.5 and 6.5 respectively; i) any non-standard procedures or any peculiarities encountered during testing; j) date of testing. BS EN 1849-2:2009EN 1849-2:2009 (E) 10 Annex A (informative) Example of the cut cross-section of a membrane d1d2deff1 mmK
41、ey deffeffective thickness Figure A1 Cross-section of a fleece backed membrane at 20X magnification cut with a razor blade NOTE Experience has shown that a magnification of 10X to 20X is sufficient for this test. BS EN 1849-2:2009This page has been intentionally left blank BS EN1849-2:2009BSI GroupH
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