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1、BRITISH STANDARD BS EN 12230:2003 Surfaces for sports areas Determination of tensile properties of synthetic sports surfaces The European Standard EN 12230:2003 has the status of a British Standard ICS 97.220.10 ? Licensed copy: The University of Hong Kong, The University of Hong Kong, Version corre
2、ct as of 23/03/2009 05:37, (c) BSI BS EN 12230:2003 This British Standard, was published under the authority of the Standards Policy and Strategy Committee on 15 August 2003 BSI 15 August 2003 ISBN 0 580 42468 5 National foreword This British Standard is the official English language version of EN 1
3、2230:2003. EN 12230:2003 is one of a package of standards being produced by CEN/TC 217. On publication of the entire package, BS 7044 will be withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/57, Surfaces for sports areas, which has the responsibility to: A
4、list of organizations represented on this committee 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 Catalogue under the section entitled “International Stan
5、dards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standar
6、d does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European
7、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 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since public
8、ation Amd. No. DateComments Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12230 April 2003 ICS 97.220.10 English version Surfaces for sports areas - Determination of tensil
9、e properties of synthetic sports surfaces Sols sportifs - Dtermination des caractristiques de traction des surfaces sportives synthtiques Sportbden - Bestimmung der Zugfestigkeitseigenschaften von Kunststoffflhen This European Standard was approved by CEN on 12 December 2002. CEN members are bound t
10、o 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 Manag
11、ement 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 o
12、fficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMIT
13、TEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12230:2003 E Licensed copy: The Univer
14、sity of Hong Kong, The University of Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI EN 12230:2003 (E) 2 Contents page Foreword3 1Scope 4 2Normative references 4 3Term and definition4 4Principle4 5Apparatus .4 5.1Test machine4 5.2Thickness gauge5 5.3Dial gauge.5 6Test specimens5 6.1Dimens
15、ions.5 6.2Preparation and conditioning.6 6.3Number of test specimens6 7Procedure .7 8Calculation and expression of results.7 8.1Relative elongation7 8.2Maximum tensile strength.7 8.3Tensile stress at rupture.8 9Test report 8 Bibliography9 Licensed copy: The University of Hong Kong, The University of
16、 Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI w w w . b z f x w . c o m EN 12230:2003 (E) 3 Foreword This document (EN 12230:2003) has been prepared by Technical Committee CEN/TC 217 “Surfaces for sports areas“, the secretariat of which is held by BSI. This European Standard shall be g
17、iven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latest by October 2003. This standard is one of a series of methods of test for sports surfaces. It is bas
18、ed on ISO 1926 with modification of the procedure for preparation of the test specimens to take account of the form in which sports surfacing materials are normally produced. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound
19、to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Licensed copy: The University of Hong Kon
20、g, The University of Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI w w w . b z f x w . c o m EN 12230:2003 (E) 4 1 Scope This European Standard specifies a method for the determination of the tensile properties of materials used as surfaces for sports areas. It is applicable to elastome
21、ric materials which are used as the upper wearing layer of such areas, and to elastomeric materials used as underlayers in composite sports surfacing systems. It is applicable both to prefabricated sheet materials and to materials formed by casting of liquid systems cured in-situ. NOTE If the nature
22、 of the sports surface is such that a properly representative test piece cannot be prepared in the manner described in this standard, then determination of tensile properties should not be attempted for quality control purposes, or as a predictor of performance in use. With such materials, it might
23、be more appropriate to determine their compressive properties or other dynamic characteristics for these purposes. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate pla
24、ces 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 edition of the publication ref
25、erred to applies (including amendments). ISO 291, Plastics Standard atmospheres for conditioning and testing. 3 Term and definition For the purposes of this European Standard, the following term and definition applies. 3.1 peak to valley height geometric measure of the roughness of the top of the su
26、rfacing, being the magnitude of regularly or irregularly recurring vertical deviations of a surface from a reference surface, when the distances between these deviations is a low multiple of their depth 4 Principle A test specimen of given shape is subjected to a tensile stress transmitted to it by
27、means of a suitable device and the resulting stress-strain curve is plotted, from which various parameters are subsequently deduced. 5 Apparatus 5.1Test machine A test machine, such that: a) the test specimen can be held in the fixing grips of the test apparatus, these fixing grips meeting the follo
28、wing conditions: the test specimen can be held sufficiently tightly to avoid slipping; no localized pressure that could tear or rupture the ends is exerted on any part of the test specimen; b) the movable grip can be moved away from the fixed grip at a constant speed of (50 5) mm/min in a direction
29、parallel to the longitudinal axis of the test piece, under no load; Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI w w w . b z f x w . c o m EN 12230:2003 (E) 5 c) the force thus exerted on the test specimen can be read with a
30、 maximum error of 1 % and can be recorded; d) if an extensometer is used, it exerts a minimum force on the test specimen and elongation of the test specimen can be read to an accuracy of 0,1 mm. 5.2Thickness gauge Thickness gauge, accurate to 0,01 mm with a plunger with a flat measuring surface nomi
31、nally 4 mm diameter. 5.3Dial gauge Dial gauge capable of reading to 0,1 mm with a plunger having a flat circular contact surface with a diameter of nominally 1,5 mm applied to the surface under a load of (0,9 0,1) N. 6 Test specimens 6.1 Dimensions 6.1.1 Profile Cut the test specimens in accordance
32、with the shape and dimensions shown in Figure 1. If the distance between the parallel surfaces of the extensometer gauge length varies by more than 5 % (tolerance on parallelism), discard the test specimen and cut a further specimen. Dimensions in millimetres D L 150,0 0,5 55 R12 R12 40 25,0 0,1 Key
33、 D Distance between the grips, 100 mm L Original gauge length, (50,0 0,1) mm Figure 1 Dimensions and shape of a tensile test specimen Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI w w w . b z f x w . c o m EN 12230:2003 (E) 6
34、 6.1.2 Thickness So that the test specimens remains representative of the installed surfacing ensure that the thickness of the test specimen is the thickness of the installed surfacing, except in the following cases, where further preparation is required: a) where the thickness of the installed spor
35、ts surface and/or the sample provided for test is greater than 25 mm, reduce the thickness of the test specimen by machining or cutting to between 20 mm and 25 mm, taking care during this operation that the structure of the material is not altered and the test specimen remains as representative as p
36、ossible of the installed sports surface; b) where the material carries a surface texture, emboss or granular finish, prepare the upper surface and underside of the test specimen as described in 6.2. NOTE Preparation of the underside of the test specimen to remove irregularities is necessary, for exa
37、mple, where a once-liquid system has been removed from a textured or porous substrate. After preparation, measure the thickness of each test specimen using the thickness gauge (5.2) and a measurement force of between 0,8 N and 1,0 N. Measure the thickness of the test piece at a minimum of five posit
38、ions along the extensometer gauge length and calculate the average thickness to the nearest 0,1 mm. If any one reading differs from the average thickness by more than 5 % of the average value, discard the test specimen. 6.2 Preparation and conditioning 6.2.1Remove any surface emboss or granular text
39、ure from the two parallel surfaces of the extensometer gauge length, to enable the thickness of the test specimen to be measured, by grinding the irregular surface with abrasive paper, grain 60, until a peak-to-valley height of (0,5 0,1) mm is achieved, or 50 % of the surface texture height has been
40、 abraded or until further rubbing no longer produces any change in the surface condition. 6.2.2Measure the peak-to-valley height by means of a dial gauge (5.3). Take the reference surface as a flat metal plate, pressed against the test surface under a force of 3 N. 6.2.3On the prepared area, make me
41、asurements at nine evenly distributed points and take the mean of the nine measurements as the peak-to-valley height of the surface being examined. 6.2.4Where necessary, mark the test specimens to indicate their orientation in relation to the direction of anisotropy. 6.2.5Condition the test specimen
42、s in accordance with one of the standard atmospheres given in ISO 291, for a period of not less than 24 h. 6.2.6Where the material of the test specimens has been formed by curing or chemical cross-linking of liquid components, prepare the test specimen under conditions which represent as closely as
43、possible the conditions under which the sports surface was, or is to be, installed. Do not test specimens from such materials until at least five days have elapsed from mixing the components. 6.3 Number of test specimens Carry out the test on at least six test specimens. In the case of prefabricated
44、 sheet materials, cut at least three test specimens from the longitudinal (machine) direction and at least three from the transverse direction. For materials formed in-situ, take at least three test specimen from each of the two directions at 90. Licensed copy: The University of Hong Kong, The Unive
45、rsity of Hong Kong, Version correct as of 23/03/2009 05:37, (c) BSI w w w . b z f x w . c o m EN 12230:2003 (E) 7 7 Procedure Carry out the test under the same atmosphere as that used for conditioning the test specimens (see 6.2.5). Clamp a test specimen in the fixing grips. Mark the original gauge
46、length on the test specimen (see Figure 1). Apply the force to be exerted on the test specimen so that it is uniformly distributed by means of the movable grip, at a rate of displacement of (50 5) mm/min until rupture occurs. Reject any test specimen that breaks outside the extensometer gauge length
47、 and prepare and test a further specimen so that the number of valid results is not less than six. If an extensometer is not used, record the elongation corresponding to a given force, at suitable intervals. Plot the resulting stress-strain curve. Repeat the procedure for the remaining test specimen
48、s until six valid results are obtained. 8 Calculation and expression of results 8.1 Relative elongation Calculate the relative elongation, E, expressed as a percentage of the original gauge length, from the following equation: L E 100 L =(1) where Lis the variation in length corresponding to a given
49、 force, measured by the variation in distance between gauge marks, expressed in millimetres (mm); Lis the original gauge length of the test piece, expressed in millimetres (mm). After determination on the stress-strain curve of the corresponding elongations, calculate c) the relative elongation, Em, for the maximum stress, if applicable, as a percentage of the original gauge length; d) the relative elongation, Er, at a rupture, as a percentage of the original gauge length