1、Resilient and laminate floor coverings Determination of indentation and residual indentation Part 3: Indentation of resilient semi-flexible/vinyl composition tiles Revtements de sol rsilients et stratifis Dtermination du poinonnement et du poinonnement rmanent Partie 3: Poinonnement de carreaux semi
2、-flexibles/carreaux de composition vinylique rsilients ISO 2011 Reference number ISO 24343-3:2011(E) First edition 2011-08-15 ISO 24343-3 INTERNATIONAL STANDARDISO 24343-3:2011(E)COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be
3、 reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 4
4、1 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Int
5、ernational Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison w
6、ith ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of techni
7、cal committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn
8、to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 24343-3 was prepared by Technical Committee ISO/TC 219, Floor coverings. ISO 24343 consists of the following parts,
9、under the general title Resilient and laminate floor coverings Determination of indentation and residual indentation: Part 1: Residual indentation Part 2: Short-term residual indentation of resilient floor covering Part 3: Indentation of resilient semi-flexible/vinyl composition tiles ISO 24343-3:20
10、11(E) ISO 2011 All rights reserved iiiINTERNATIONAL STANDARD ISO 24343-3:2011(E) Resilient and laminate floor coverings Determination of indentation and residual indentation Part 3: Indentation of resilient semi-flexible/vinyl composition tiles 1 Scope This part of ISO 24343 describes a method for d
11、etermining the short-term indentation resistance of resilient semi-flexible/vinyl composition tile (VCT) floor covering after the application of constant load. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 indentation difference between the
12、 initial thickness and the thickness measured after removal of the load 2.2 thickness distance between two parallel plates where the floor covering is inserted under a specific load 3 Principle Tests pieces are subjected to static loading at room temperature, the thickness being measured before and
13、during loading at specified dwell periods. 4 Apparatus 4.1 Water bath, capable of maintaining a temperature of (23 2,0) C. NOTE This is optional. 4.2 Indenter, a straight, steel cylinder of diameter as specified below with a hemispherical tip. Diameter of the indenter: (6,35 0,01) mm; weight of the
14、indenter: (0,90 0,05) kg. 4.3 Rigid, horizontal platform, of minimum diameter 35 mm. 4.5 Device, by means of which a force of (13,60 0,12) kg can be smoothly applied. The frame shall not deform by more than 0,05 mm measured in the direction of the axis under the maximum force. 4.5 Comparator, for me
15、asuring the depth of indentation to 0,01 mm. ISO 2011 All rights reserved 1 Key 1 horizontal platform 2 test piece 3 annular weight 4 lever arm 5 comparator 6 dead weight 7 indenter Figure 1 Example of a device to apply force on an indenter 4.6 Apparatus, for measuring the thickness of the test piec
16、e to 0,01 mm. Diameter of the foot: (3,50 0,02) mm; mass applied (0,085 0,003) kg. 4.7 Stopwatch, or other timing device. 5 Atmosphere for conditioning and testing Unless stated otherwise in the product specification, condition the test pieces at a temperature of (23 2,0) C and a relative humidity o
17、f (50 5) % for a minimum of 1 h. Maintain these conditions when carrying out the test. Test pieces may also be conditioned by means of a water bath as described in 4.1 for a minimum of 1 h. 6 Sampling and selection of specimens Take a representative sample from the available material. Take three tes
18、t pieces with dimensions at least 50 mm by 50 mm cut from different tiles or planks. 7 Test procedure 7.1 Condition the test piece as specified in Clause 5. ISO 24343-3:2011(E)2 ISO 2011 All rights reserved7.2 Mark the place of measurement and measure the initial thickness of the test piece, t 0 , a
19、t its centre to 0,01 mm, using the appropriate mass specified in 4.5. 7.3 Place the test piece on the platform and centre the marked place of measurement directly under the indenting tip. 7.4 Place the indenter on the marked spot and adjust the comparator to zero. Gently apply the total force specif
20、ied in 4.3 and start the stopwatch within 2 s. 7.5 Record the depth of indentation, t 1 , after (60 1) s to 0,01 mm while continuing to maintain the force on the test piece. 7.6 After a further (540 2) s, record the depth of indentation, t 2 , of the test piece. 7.7 Repeat the test on the remaining
21、test pieces. Calculate the mean value from the measurements taken and express the result to 0,01 mm. 8 Calculation and expression of results 8.1 Record the one minute indentation, t 1 , for each test piece. 8.2 Record the ten minute indentation, t 2 , for each test piece. 8.3 Calculate the mean valu
22、e for both the one minute and the ten minute indentations and express the result to the nearest 0,01 mm. 9 Precision statement A round robin test shall be conducted to determine the precision of this test method. 10 Test report The test report shall contain the following information: a) a statement
23、that the tests were performed in accordance with this part of ISO 24343, i.e. ISO 24343-3; b) complete identification of the product tested, including type, source, colour, and manufacturers reference numbers; c) history of the sample; d) the individual and mean values for the one minute indentation
24、 to the nearest 0,01 mm; e) the individual and mean values for the ten minute indentation to the nearest 0,01 mm; f) any deviation from this part of ISO 24343 which could have affected the results. ISO 24343-3:2011(E) ISO 2011 All rights reserved 3Bibliography 1 ASTM F 1066, Standard Specification f
25、or Vinyl Composition Floor Tile 2 ASTM F 1914, Standard Test Methods for Short-Term Indentation and Residual Indentation of Resilient Floor Covering 3 JIS A 1454, Test methods Resilient floorcoverings ISO 24343-3:2011(E)4 ISO 2011 All rights reservedISO 24343-3:2011(E) ICS 97.150 Price based on 4 pages ISO 2011 All rights reserved
