1、Designation: F511 17Standard Test Method forQuality of Cut (Joint Tightness) of Resilient Floor Tile1This standard is issued under the fixed designation F511; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a means of measuring andevaluating the quality of cut (joint tightness) of square orrectangular resilient
3、floor tile. Characteristics that detract froma monolithic (seamless) appearance, such as burred, chipped,nicked, or beveled edges, or bow cut or rounded corners, aremeasured or observed, or both.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses
4、are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safet
5、y and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Sta
6、ndards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:F141 Terminology Relating to Resilient Floor Coverings2.2 ANSI Standard:2ANSI/ASQC Z1.4, (most recent version) Sampling Proce-dures and Tabl
7、es for Inspection by Attributes3. Significance and Use3.1 Installations of resilient floor tile require tight joints ifsatisfactory appearance is to result. The quality of cut ofresilient tile is determined by this test method.4. Apparatus4.1 Shadow Box, consisting of a backlighted poly(methylmethac
8、rylate) (PMMA) plate measuring 28 by 28 by38 in.(710 by 710 by 9.5 mm). One metal strip, 28 in. long by34 in.(19 mm) wide by18 in. (3.2 mm) thick, and one metal strip,2714 in. (692 mm) long by34 in. wide by18 in. thick, arepermanently attached to the PMMA plate to form an included90 6 10-sec angle a
9、t the lower left-hand corner of the PMMAplate. This is suitable for tiles up to 12 by 12 in. (305 by 305mm). For larger tiles, longer metal strips will have to be used,such that the length of each strip is greater than twice thelongest dimension of the tiles to be measured.4.2 Optical Comparator3Pow
10、er illuminated magnifier,equipped to measure to the nearest 0.001 in. (0.02 mm).4.3 Feeler GagesAs an alternative to the optical compara-tor described in 4.2, a set of feeler gages with a range from0.0015 to 0.035 in. (0.038 to 0.89 mm) for measuring to thenearest 0.001 in. (0.02 mm) may be used.4.4
11、 Wire Gages, sized in increments of 0.005 in. (0.13 mm)from 0.005 to 0.050 in. (0.13 to 1.3 mm).5. Sampling5.1 Sample in accordance with ANSI/ASQC Z1.4, mostrecent version.6. Test Specimen and Sample6.1 The specimen (test unit) shall consist of four nominallysquare or rectangular tiles taken from a
12、sample secured inaccordance with ANSI/ASQC Z1.4, most recent version.6.2 The required number of specimens for each test shall beindicated in the individual material specification. If no numberis given, four units (the specimen) shall be taken from thesampled material and one determination made on ea
13、ch.7. Conditioning7.1 Condition the test tiles in an atmosphere maintained at73.4 6 3.6F (23 6 1C) and 50 6 10 % relative humidity fornot less than 2 h prior to testing.1This test method is under the jurisdiction ofASTM Committee F06 on ResilientFloor Coverings and is the direct responsibility of Su
14、bcommittee F06.20 on TestMethods - Products Construction/Materials.Current edition approved May 1, 2017. Published May 2017. Originallyapproved in 1977. Last previous edition approved in 2011 as F511 11. DOI:10.1520/F0511-17.2Available from the American National Standards Institute, 25 W. 43rd St.,
15、4thFloor, New York, NY 10036.3The sole source of supply of the apparatus known to the committee at this timeis Titan Tool Supply Co., Inc., 68 CometAve., Buffalo, N.Y. 14216. If you are awareof alternative suppliers, please provide this information to ASTM Headquarters.Your comments will receive car
16、eful consideration at a meeting of the responsibletechnical committee, which you may attend.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized princip
17、les on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.17.2 Conduct tests in an atmosphere maintained at73.4 6 3.6F (23 6 1C) and 50
18、6 10 % relative humidity.8. Procedure8.1 After conditioning, place a tile from the four-tile testunit into the 90 angle formed by the two metal strips (4.1).Place the other three tiles of the test unit so as to form afour-tile square with tiles in firm contact. Do not force the tilesagainst each oth
19、er. Normally, place each adjacent tile so thatalternative tiles are at 90 to each other as regards manufac-turing direction (a checkerboard design). If the tile being testedhas arrows on the back and instructions call for all tile to beinstalled in one direction, lay the test tile on the PMMA platei
20、n that manner. If manufacturing direction cannot be deter-mined by a visual inspection of the tile, make the four-tilesquare in a random manner. Place rectangular tiles with thelonger sides in the same direction to make a four-tile rectangle.8.2 Turn on the light in the shadow box and select twopoin
21、ts along each tile joint that show the largest opening basedon the degree of light from the shadow box. Measure the widthof the opening at those locations using the optical comparator.Illuminate the tile joint from above. Read the opening of thetile joint at the same location as above. Record openin
22、gs forlighted-above and lighted-below measurements. Average eachset of results and subtract the lighted-below result from thelighted-above result. Report the difference as bevel. Theaverage of the lighted-above result is reported as the averagejoint opening.NOTE 1The procedure outlined in 8.2 may be
23、 performed using feelergages.8.3 Using the 0.005-in. (0.13-mm) increment wire gages,determine the maximum opening where corners of the four-tilelay-up meet.8.4 Inspect the full length of the four tile joints using theoptical comparator or a 20-power magnifier and record theappearance of the joints i
24、n accordance with 9.1.5.8.5 Turn each tile 90 clockwise and repeat the procedure inaccordance with 8.2, 8.3, and 8.4.8.6 Repeat 8.5 until four sets of measurements have beenmade.NOTE 2The procedure outlined in 8.2 may be performed with feelergages instead of an optical comparator.9. Report9.1 Report
25、 the following information:9.1.1 Maximum width of opening (lighted-above) betweentile edges,9.1.2 Average width of opening (lighted-above) between tileedges,9.1.3 Average bevel. Report a zero bevel if the value isnegative,9.1.4 Maximum opening of intersection of four tile corners,and9.1.5 Descriptio
26、n of the general appearance of edge qualityas regards burred edges, nicks, etc. Make special comment if“rockers” or “bow cuts” are observed.10. Precision and Bias10.1 The repeatability and reproducibility of this testmethod are dependent upon the ability to use and read theoptical comparator or feel
27、er gage measuring device accurately.Typically this bias should be 60.001 in. (0.03 mm).NOTE 3A more precise statement of the precision and bias cannot bemade because it is not feasible to conduct a round robin evaluation of thequality of the cut due to the effects of handling that the tile receives
28、in botha test situation and in actual use.11. Keywords11.1 joint tightness; quality of cut; resilient floor tileASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advis
29、ed that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either r
30、eapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If
31、you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individu
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