1、BRITISH STANDARD 24343-1:2012Resilient and laminate floor coverings Determination of indentation and residual indentation Part 1: Residual indentationICS 97.150nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnul
2、lnull nullnull nullnullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnullnullBS EN ISO National forewordThis British Standard is the UK implementation of EN ISO 24343-1:2012. It is identical to ISO 24343-1:2007. It supersedes BS EN 433:1994 and BS ISO 24343-1:2007,Th
3、e UK participation in its preparation was entrusted to Technical Committee PRI/60, Resilient floor coverings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. User
4、s are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 24343-1:2012This British Standard waspublished under the authorityof the Standards Policy andStrategy Committeeon 31 July 2007 The British Standards Institution 20
5、12. Published by BSI Standards Limited 2012Amendments/corrigenda issued since publicationDate Comments 29 February 2012 This corrigendum renumbers BS ISO 24343-1:2007 as BS EN ISO 24343-1:2012ISBN 978 0 580 75238 4which are withdrawn.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 24343-1 J
6、anuary 2012 ICS 97.150 Supersedes EN 433:1994English Version Resilient and laminate floor coverings - Determination of indentation and residual indentation - Part 1: Residual indentation (ISO 24343-1:2007) Revtements de sol rsilients et stratifis - Dtermination du poinonnement et du poinonnement rma
7、nent - Partie 1: Poinonnement rmanent (ISO 24343-1:2007) Elastische und Laminat-Bodenbelge - Bestimmung des Eindrucks und des Resteindrucks - Teil 1: Resteindruck (ISO 24343-1:2007) This European Standard was approved by CEN on 17 December 2011. CEN members are bound to comply with the CEN/CENELEC I
8、nternal 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 CEN-CENELEC Management Centre or to
9、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 CEN-CENELEC Management Centre has the same status as the official
10、 versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
11、a, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worl
12、dwide for CEN national Members. Ref. No. EN ISO 24343-1:2012: E3 Foreword The text of ISO 24343-1:2007 has been prepared by Technical Committee ISO/TC 219 “Floor coverings” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 24343-1:2012 by Technical Committ
13、ee CEN/TC 134 “Resilient, textile and laminate floor coverings” 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 2012, and conflicting national standar
14、ds shall be withdrawn at the latest by July 2012. 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 433:1994
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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irela
16、nd, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 24343-1:2007 has been approved by CEN as a EN ISO 24343-1:2012 without any modification.
17、BS EN ISO 24343-1:2012 EN ISO 24343-1:2012 (E)1Resilient and laminate floor coverings Determination ofindentation and residual indentation Part 1: Residual indentation 1 Scope This part of ISO24343 describes a method for determining the residual indentation produced in a resilient orlaminate floor c
18、overing after the application and removal of a constant load. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply.2.1 residual indentation difference between the initial thickness and the thickness measured after removal of the load 2.2 thickness dist
19、ance between two parallel plates where the floor covering is inserted under a specific load 3 Principle A test piece is subjected to a static loading, the thickness being measured before loading and after a recoveryperiod. 4 Apparatus 4.1 Straight, steel cylindrical indenter, of diameter 11,30 mm 0,
20、05 mm, with the edge of the flat baseslightly rounded. Area of the indenter: 100 mm2. 4.2 Rigid, horizontal platform, of a minimum diameter 35 mm.4.3 Device, by means of which a preliminary force of 3,00 N 0,03 N and a total force of 500 N 0,5 N(pressure 5 MPa) can be smoothly applied. The frame sha
21、ll not deform by more than 0,05 mm measured inthe direction of the axis under the maximum force. This deformation shall be taken into consideration whenmeasuring indentation. (See Figure 1.)4.4 Comparator, formeasuring the depth of indentation to 0,01 mm. BS EN ISO 24343-1:2012 EN ISO 24343-1:2012 (
22、E)2 Dimensions in millimetres Key1 horizontal platform 5 comparator 2 test piece 6 dead weight3 annular weight 7 indenter 4 lever arm p pressure (5 MPa) h indentation depth Figure 1 Example of device to apply force on an indenter4.5 Apparatus for measuring the thickness of the test piece to the near
23、est 0,01mm . Diameter of thefoot: 6,00 mm 0,03 mm (28,3 mm 2 ). Mass applied: 0,085 kg 0,003 kg (approximately 30 kPa). When the floor covering has one or more non-solid layers (e.g. foam), then a mass of 0,028 kg 0,001 kg(approximately10 kPa) shall be applied. 4.6 Stopwatch . 4.7 Annularweight, of
24、approximate internal diameter 25 mm and a mass of 0,5 kg. BS EN ISO 24343-1:2012 EN ISO 24343-1:2012 (E)35 Atmosphere for conditioning and testing Condition the test piece at a temperature of (23 2) C and a relative humidity of (50 5) % for a minimum of24 h. Maintain these conditions when carrying o
25、ut the test. 6 Sampling and selection of specimen Take a representative sample from the available material. Take three test pieces each with dimensions of atleast 60 mm 60 mm cut from a roll or different tiles or planks. 7 Test procedure 7.1 Mark the place of measurement and measure the initial thic
26、kness of the test piece, t 0 , at its centreto0,01 mm, using the appropriate massspecified in 4.5. 7.2 Place the test piece on the platform. Place the annular weight (4.7) and the indenter (4.1) on the testpiece. 7.3 Within 5s, applythe preliminary force specified in 4.3 and adjust the comparator to
27、zero, taking into consideration the deformation of the frame. Gently apply the total force specified in 4.3 and start the stopwatch within 2 s.7.4 Record the depth of indentation after 150 min to 0,01 mm and remove the force and the test piece fromthe platform. This measurement is not required in th
28、e calculation of the results, but is required in a number of productspecifications. 7.5 After a further 150 min, measure the final thickness of the test piece, t 1 , at the marked position, usingthe appropriate apparatus in 4.5.7.6 Repeat the test on the remaining test pieces. Calculate the mean val
29、ue from the measurements takenand express the result to nearest 0,01 mm. 8 Calculation of resultsCalculate the residual indentation, t 0 t 1 , for each specimen. t 0 is the initial thickness, in millimetres,mm. t 1 is the final thickness, in millimetres, mm.9 Precision statementAn interlaboratory te
30、stwill be conducted to determine the precision of this method. BS EN ISO 24343-1:2012 EN ISO 24343-1:2012 (E)4 10 Test reportThe test report shall contain the following information:a) a statement that the tests were performed in accordance with this part of ISO 24343 (i.e. ISO 24343-1); b) complete
31、identification of the product tested, including type, source, colour and manufacturers referencenumbers;c) previous history of the sample; d) the mean value for residual indentation; e) the mean value for the depth of indentation after 150 min; f) anydeviation from this part of ISO 24343, which mayh
32、ave affected the results.BS EN ISO 24343-1:2012 EN ISO 24343-1:2012 (E)5Bibliography1 EN 433, Resilient floor coverings Determination of residual indentation after stat ic loadingBS EN ISO 24343-1:2012 EN ISO 24343-1:2012 (E)BSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0
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