1、April 2012 Translation by DIN-Sprachendienst.English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 9
2、7.150!$? b) Clause 4 “Apparatus” has been revised and Subclause 4.4 “Comparator” has been included; c) Clause 6 “Sampling and selection of specimen” has been modified; d) Clause 7 “Procedure” has been revised; e) Clause 9 “Precision statement” has been included. Previous editions DIN 51955: 1965-07,
3、 1974-02, 1988-07 DIN EN 433: 1994-11 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 24343-1 January 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 2434
4、3-1:2007) 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 Internal Regulations which stipulate the conditi
5、ons 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 any CEN member. This European Standard exists i
6、n 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 versions. CEN members are the national standar
7、ds 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
8、 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 worldwide for CEN national Members. Ref. No. EN ISO
9、 24343-1:2012: ERevtements de sol rsilients et stratifis - Dtermination du poinonnement et du poinonnement rmanent - Partie 1: Poinonnement rmanent (ISO 24343-1:2007) Contents DIN EN ISO 24343-1:2012-04 EN ISO 24343-1:2012 (E) 2 Page Foreword 3 1 Scope 4 2 Terms and definitions .4 3 Principle 4 4 Ap
10、paratus .4 5 Atmosphere for conditioning and testing .6 6 Sampling and selection of specimen 6 7 Test procedure .6 8 Calculation of results 6 9 Precision statement .6 10 Test report 7 Bibliography 8 Foreword The text of ISO 24343-1:2007 has been prepared by Technical Committee ISO/TC 219 “Floor cove
11、rings” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 24343-1:2012 by Technical Committee 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 nationa
12、l standard, either by publication of an identical text or by endorsement, at the latest by July 2012, and conflicting national standards 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
13、. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 433:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Au
14、stria, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
15、 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. DIN EN ISO 24343-1:2012-04 EN ISO 24343-1:2012 (E) 3 1 Scope This part of ISO 24343 describes a method for determining the residual indentation produced in a resilien
16、t or laminate floor covering 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 l
17、oad 2.2 thickness distance 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 recovery period. 4 Apparatus 4.1 Straight, steel cylindrical indenter,
18、of diameter 11,30 mm 0,05 mm, with the edge of the flat base slightly 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 smoot
19、hly applied. The frame shall not deform by more than 0,05 mm measured in the direction of the axis under the maximum force. This deformation shall be taken into consideration when measuring indentation. (See Figure 1.) 4.4 Comparator, for measuring the depth of indentation to 0,01 mm. DIN EN ISO 243
20、43-1:2012-04 EN ISO 24343-1:2012 (E) 4 Dimensions in millimetres Key 1 horizontal platform 5 comparator 2 test piece 6 dead weight 3 annular weight 7 indenter 4 lever arm p pressure (5 MPa) h indentation depth Figure 1 Example of device to apply force on an indenter 4.5 Apparatus for measuring the t
21、hickness of the test piece to the nearest 0,01 mm. Diameter of the foot: 6,00 mm 0,03 mm (28,3 mm2). 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 (approximately 10 kPa) shall be applied.
22、 4.6 Stopwatch. 4.7 Annular weight, of approximate internal diameter 25 mm and a mass of 0,5 kg. DIN EN ISO 24343-1:2012-04 EN ISO 24343-1:2012 (E) 5 5 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 of 2
23、4 h. Maintain these conditions when carrying out the test. 6 Sampling and selection of specimen Take a representative sample from the available material. Take three test pieces each with dimensions of at least 60 mm 60 mm cut from a roll or different tiles or planks. 7 Test procedure 7.1 Mark the pl
24、ace of measurement and measure the initial thickness of the test piece, t0, at its centre to 0,01 mm, using the appropriate mass specified 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 test piece. 7.3 Within 5 s, apply the preliminary
25、force specified in 4.3 and adjust the comparator to 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 fro
26、m the platform. This measurement is not required in the calculation of the results, but is required in a number of product specifications. 7.5 After a further 150 min, measure the final thickness of the test piece, t1, at the marked position, using the appropriate apparatus in 4.5. 7.6 Repeat the te
27、st on the remaining test pieces. Calculate the mean value from the measurements taken and express the result to nearest 0,01 mm. 8 Calculation of results Calculate the residual indentation, t0 t1, for each specimen. t0is the initial thickness, in millimetres, mm. t1is the final thickness, in millime
28、tres, mm. 9 Precision statement An interlaboratory test will be conducted to determine the precision of this method. DIN EN ISO 24343-1:2012-04 EN ISO 24343-1:2012 (E) 6 10 Test report The test report shall contain the following information: a) a statement that the tests were performed in accordance
29、 with this part of ISO 24343 (i.e. ISO 24343-1); b) complete identification of the product tested, including type, source, colour and manufacturers reference numbers; c) previous history of the sample; d) the mean value for residual indentation; e) the mean value for the depth of indentation after 1
30、50 min; f) any deviation from this part of ISO 24343, which may have affected the results. DIN EN ISO 24343-1:2012-04 EN ISO 24343-1:2012 (E) 7 Bibliography 1 EN 433, Resilient floor coverings Determination of residual indentation after static loading DIN EN ISO 24343-1:2012-04 EN ISO 24343-1:2012 (E) 8
