1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58dimensional variations after exposure to humid and dry climate conditionsICS 97.150Laminate and tex
2、tile floor coverings Determination of BRITISH STANDARDBS ISO24339:2006BS ISO 24339:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48445 9The British Standards which implement international publications ref
3、erred to in this document may be found in the BSI Catalogue under the section entitled “International Standards 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 provi
4、sions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 11 and a b
5、ack cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesenquiries on the interp
6、retation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.National forewordThis British Standard reproduces verbatim ISO 24339:2006 and implements it as the UK national standard.The UK participation in its
7、 preparation was entrusted to Technical Committee PRI/60, Resilient floor coverings, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any Reference numberISO 24339:2006(E)INTERNATIONAL STANDARD ISO24339First edition200
8、6-05-01Laminate and textile floor coverings Determination of dimensional variations after exposure to humid and dry climate conditions Revtements de sols stratifis et textiles Dtermination des variations dimensionnelles aprs exposition des conditions climatiques humides et sches BS ISO 24339:2006ii
9、iiiContents Page Foreword iv 1 Scope . 1 2 Principle. 1 3 Apparatus 1 4 Test specimens . 3 5 Procedure 5 5.1 Installation of the test floor 5 5.2 Climatic test periods. 5 5.3 Measurements. 5 6 Calculations and expression of results 9 6.1 General. 9 6.2 Dimensional variations. 9 6.3 Width flatness (o
10、nly for laminate floor coverings) (C) 9 6.4 Openings between the elements (only for laminate floor coverings) (JLand JS). 10 6.5 Height difference between elements (only for laminate floor coverings) (hLand hS) 10 6.6 Flatness (only for laminate floor coverings) (fland fw) 10 7 Test report . 11 BS I
11、SO 24339:2006iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subje
12、ct 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 with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC
13、) 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 technical committees is to prepare International Standards. Draft International Standards adopted by the technical committe
14、es 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 to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be h
15、eld responsible for identifying any or all such patent rights. ISO 24339 was prepared by Technical Committee ISO/TC 219, Floor coverings. BS ISO 24339:20061Laminate and textile floor coverings Determination of dimensional variations after exposure to humid and dry climate conditions 1 Scope This Int
16、ernational Standard specifies a process to determine the capability of laminate and textile floor coverings to withstand exposure to moderate humid and dry climate conditions. The subclauses pertaining to flatness, openings between elements and height differences between elements only apply to lamin
17、ated floor coverings. 2 Principle To simulate as real use conditions as possible, a test floor covering with an approximate area of 5,5 m2is installed in a climate chamber. After a conditioning period of one week, the floor covering is exposed for four weeks to humid climate and finally another four
18、 weeks to dry climate conditions. When applicable, after each week, dimensional variations, flatness, openings between elements, height differences between elements, etc. are recorded. 3 Apparatus 3.1 Climate chamber, of large enough size to have room for a subfloor as described in 3.2, enabling the
19、 following atmospheres to be maintained: an atmosphere of (23 2) C and (50 5) % relative humidity (RH) called conditioning atmosphere; an atmosphere of (23 2) C and (85 5) % relative humidity (RH) called humid atmosphere; an atmosphere of (23 2)C and (30 5) % relative humidity (RH) called dry atmosp
20、here. lt is possible to use one chamber to maintain successively the three atmospheres or to have three chambers, each one maintaining only one of these atmospheres all the time. 3.2 Subfloor, with an approximate size of 3 m 2 m, rigid and flat (maximum tolerances 5 mm / 2 m and 1 mm / 200 mm). 3.3
21、Set of thickness gauges, with accuracy and an interval of 0,05 mm. 3.4 Apparatus for measuring width flatness, consisting of a dial gauge accurate to 0,01 mm with a rounded tip of radius u 5 mm, installed centrally in relation to three rounded supports with radius W 5 mm. The supports shall be adjus
22、table along a T-shaped assembly of bars to provide the required gauge length. The measurement, d, shall not be less than the width, w, of the test specimen minus 10 mm. The tip of the gauge in contact with the face of the test specimen shall apply a force of (1,0 0,5) N. The mass of the apparatus sh
23、all not affect the flatness of the test specimen beyond the limit of the accuracy of the gauge. See Figure 1. The instrument shall be set to zero against a suitable reference plate. BS ISO 24339:20062 Key 1 dial gauge 2 T-groove 3 adjustable pin 4 adjustable bridge Figure 1 Apparatus for measuring w
24、idth flatness, principle 3.5 Calliper gauge or any other equivalent tool with an accuracy of 0,01 mm. 3.6 Flexible steel ruler, of length about 2 600 mm. 3.7 Flexible steel ruler, of length about 1 600 mm. 3.8 Rigid ruler, 1 500 mm long, with a bow less than 0,1 mm. 3.9 Measurement bridge, (movable
25、in Y-axis), with a bow less than 0,1 mm equipped with a calliper gauge (movable in X-axis), with an accuracy of 0,01 mm. The idea with this measurement bridge is to cover the entire test area with one instrument. See Figure 2. BS ISO 24339:20063Key 1 calliper gauge according to 3.5 (movable in X-axi
26、s) 2 measurement bridge (movable in Y-axis) 3 installed test floor covering 4 ridged frame (of, e.g. steel or aluminium) Figure 2 Principle of a measurement bridge 4 Test specimens Take enough floor covering of the materials to be tested to be able to cover a test area of 1 900 mm 2 900 mm according
27、 to the drawing in Figure 3. If applicable, the materials shall be sampled so that the long sides of the elements are aligned as shown in Figure 3. If the elements are equipped with an factory applied underlay, all tests shall be carried out with this material kept on, i.e. no pre-attached underlay
28、material shall be taken off prior to testing. Sample the necessary quantity of textile floor covering to cover a test area of 1 900 mm 2 900 mm. The material shall be tested in accordance with the manufacturer instruction for installation in order to simulate as real in situ situations as possible.
29、No conditioning is necessary prior to installation in the test chamber. BS ISO 24339:20064 Dimensions in millimetres Key 1 installed floor covering to be tested 2 measurement area 3 measuring-points, dimensional variations of the length (3) 4 measuring-points, dimensional variations of the width (3)
30、 5 measuring-points of the width flatness (10) 6 measuring-points of the openings in the joints and the height difference between the elements at the long side of the elements (10) 7 measuring-points of the openings in the joints and the height difference between the elements at the short side of th
31、e elements (10) Figure 3 Measurement scheme, general principle BS ISO 24339:200655 Procedure 5.1 Installation of the test floor Following the principle drawing from Figure 3, install the floor covering elements to be tested on the subfloor in the climate chamber. The installation shall be in accorda
32、nce with the instructions from the manufacturer and in a conditioned atmosphere of (23 2) C and (50 5) % relative humidity. The installed floor shall have a minimum size of 1 900 mm 2 900 mm. If applicable, the long sides of the floor covering elements shall be aligned with the long side of the test
33、 area. In the case of textile floor coverings, install the floor covering so that the longest side of the tested area corresponds to the direction of manufacture. 5.2 Climatic test periods 5.2.1 Conditioning atmosphere After the installation of the floor covering in the climate chamber, the atmosphe
34、re is kept constant for 7 days at (23 2) C and with a (50 5) % relative humidity (RH), conditioning atmosphere. 5.2.2 Humid atmosphere Once the period in the conditioning atmosphere has passed, the atmosphere in the climate chamber shall be changed to a humid atmosphere at (23 2) C and with a (85 5)
35、 % relative humidity (RH). This humid atmosphere is then kept constant for a period of four weeks. 5.2.3 Dry atmosphere Once the period in the humid atmosphere has passed, the atmosphere in the climate chamber shall be changed to a dry atmosphere at (23 2) C and with a (30 5) % relative humidity (RH
36、). This dry atmosphere is then kept constant for a new period of four weeks. 5.3 Measurements 5.3.1 General Perform the initial measurement after the 7 days conditioning period. Then repeat the measurements every 7 days until the end of the dry period. Except for measuring dimensional variations, al
37、l the measuring points shall be situated at a distance of at least 200 mm from the edges (see Figure 3). All measurements shall always be made at the same points. Each measuring point shall be clearly marked and numbered before the initial measurement. For examples of numbering, see Table 1 and Tabl
38、e 2. 5.3.2 Measuring dimensional variations 5.3.2.1 Dimensional variations General Only the dimensional variations are looked for. An easy measurement of the variations can be taken with a steel ruler, the length of which is slightly shorter (10 mm for example) than the total distance to measure. Th
39、is difference of length is measured with a calliper gauge at the different steps of the test. It is also possible to measure, with a calliper gauge, the distance of the test area to a fixed frame outside of the test area. 5.3.2.2 Dimensional variations across the width (w) The measurements are taken
40、 at three points (see Figure 3). Each measurement needs to be taken between two thrusts fixed to the floor coverings, the distance of which is between 1 500 mm and 1 700 mm. For the BS ISO 24339:20066 measurement against a fixed frame, no thrusts on the test area are necessary. Measure across the wi
41、dth of the elements for laminate floor coverings or over the smallest length of the tested surface for textile floor coverings. 5.3.2.3 Dimensional variations along the length (l) Same procedure as in 5.3.2.2, but the distance between the three thrusts is between 2 500 mm and 2 700 mm. Measure along
42、 the width of the elements for laminate floor coverings or over the longest length of the tested surface for textile floor coverings. 5.3.3 Measuring the width flatness (only for laminate floor coverings) (C) Choose each of the 10 points to measure the width flatness. These points shall be at least
43、50 mm from the end joint of the element. Measure the width flatness with the apparatus described in 3.4. Record all measured values, with its sign, to the nearest 0,01 mm. 5.3.4 Measuring the openings between the elements (only for laminate floor coverings) (JLand JS) Chose each of the 10 points to
44、measure the openings between the elements in the long side (JL) and short side (JS). Each of 10 measurements is taken where the opening between the elements initially seems the biggest. To take the measurements, use the set of thickness gauges described in 3.3. The width of the opening is equal to t
45、he thickest thickness gauge that can be inserted applied with a minimum of force. Record all measured values with the result achieved from the appropriate thickness gauge. 5.3.5 Measuring the height difference between elements (only for laminate floor coverings) (hLand hS) Choose each of the 10 poin
46、ts to measure the height difference between elements at the long (hL) and short sides (hS). Measure the hLand hSwith the apparatus defined in 3.4. Move the apparatus across the joint between the two elements to have the height difference between the two elements. Record all measured values with the
47、result achieved from the appropriate calliper gauge. 5.3.6 Measuring the flatness of the test area (only for laminate floor coverings) (fland fw) The flatness of the assembled floor covering can be measured by using the straight rigid ruler as described in 3.8. This ruler is moved along the floor in
48、 every direction length (fl); width (fw) with the aim of detecting the biggest flatness deviation which is then measured with the help of the set of thickness gauges described in 3.3 or any other apparatus giving the same result. A measurement bridge described in 3.9 that can be moved on a frame out
49、side of the test area can also be used. BS ISO 24339:20067Table 1 Guidance for the recording and documentation of the measured parameters Initial Humid cycle Dry cycle 50 % RH 85 % RH 30 % RH All values in millimetres except where indicated Day 7 Day 14 Day 21 Day 28 Day 35 Day 42 Day 49 Day 56 Day 63 w1w2w3wavgwavg(%) l1l2l3lavglavg(%) C1C2C3C4C5C6C7C8C9C10CmaxCavgCavg(%) JL,1JL,2JL,3JL,4JL,5JL,6JL,7JL,8JL,9JL,10JL,maxJL,avgJL,avg(%) BS ISO 24339:20068
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