1、Designation: C1243 93 (Reapproved 2015)Standard Test Method forRelative Resistance to Deep Abrasive Wear of UnglazedCeramic Tile by Rotating Disc1This standard is issued under the fixed designation C1243; the number immediately following the designation indicates the year oforiginal adoption or, in
2、the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the deep abrasive wear bymeasuring the loss of volume result
3、ing from abrasion ofunglazed ceramic tile under given conditions by means of arotating disc and the use of abrasive material.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all o
4、f thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C242 Terminology of Cer
5、amic Whitewares and RelatedProductsC448 Test Methods for Abrasion Resistance of PorcelainEnamelsC501 Test Method for Relative Resistance to Wear ofUnglazed Ceramic Tile by the Taber AbraserC1027 Test Method for Determining Visible Abrasion Re-sistance of Glazed Ceramic Tile3. Terminology3.1 Definiti
6、ons:3.1.1 For definitions of terms used in this test method, seeTerminology C242.4. Significance and Use4.1 This test method provides the means to measure thepotential resistance to wear of unglazed ceramic tile intendedfor floor coverings. This test method does not consider physicalappearance but i
7、s intended to measure durability. See TestMethod C1027 for the determination of visible abrasionresistance of glazed ceramic tile.4.1.1 See Test Method C501 for an alternative method todetermine deep abrasion.5. Apparatus35.1 Abrasion apparatus (see Fig. 1) consisting essentially ofa rotating disc,
8、a storage hopper with a dispensing device forthe abrasive material, a test specimen support, and a counter-weight. The disc is made of Fe 360Asteel (ISO 630-1980) witha diameter of 200 6 0.2 mm and thickness at the edge of 10 60.1 mm, and with a rate of revolution of 75 r/min. The pressurewith which
9、 test specimens are held against the steel disc isdetermined by calibrating the apparatus against float glass(bathside). The pressure is adjusted such that, after 150revolutions, a chord of 24 6 0.5 mm is produced.NOTE 1For the specification of float glass, see Test Method C448,Table A1.4.5.1.1 When
10、 the disc diameter has worn to 199 mm, the steeldisc shall be replaced.5.2 A linear measuring gage capable of measuring to 0.1mm.5.3 Abrasive MaterialWhite fused aluminum oxide ofgrain size 80 (32 GB 1971) FEPA Bonded Abrasive Grain SizeStandard Grits 8-220.6. Test Specimen6.1 Types of Test Specimen
11、sTests shall be carried outusing whole tiles or test specimens of suitable dimensions.Before testing, small specimens shall be fixed with an adhesiveonto a larger background, avoiding joints where possible.1This test method is under the jurisdiction ofASTM Committee C21 on CeramicWhitewares and Rela
12、ted Productsand is the direct responsibility of SubcommitteeC21.06 on Ceramic Tile.Current edition approved Dec. 15, 2015. Published December 2015. Originallyapproved in 1993. Last previous edition approved in 2009 as C1243 - 93 (2009).DOI: 10.1520/C1243-93R15.2For referenced ASTM standards, visit t
13、he ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The sole source of supply of the apparatus known to the committee at this timeis Gabrielli S.R.L.,
14、Box 218, 50019 Sesto Florentino, Florence, Italy, Fax:55-42-15-654 If you are aware of alternative suppliers, please provide thisinformation to ASTM International Headquarters. Your comments will receivecareful consideration at a meeting of the responsible technical committee,1whichyou may attend.Co
15、pyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.2 SamplingAminimum of five tiles shall be tested. Onlytile that show no visible warpage when checked with astraightedge shall be used.7. Procedure7.1 Place a test specimen in the apparat
16、us so that it istangential against the disc. Ensure that the feed of abrasivematerial into the grinding zone is uniform at a rate of 100 g 610 g per 100 revolutions.7.2 Rotate the steel disc for 150 revolutions. Remove thetest specimen from the apparatus and measure the cord length(l) of the groove
17、by means of the linear measuring gage to thenearest 0.5 mm. Test each test specimen in at least two placesat right angles on its proper surface.7.3 If relief surfaces would interfere with the determinationof the abrasion resistance, the projections may be ground off,but the results of the test will
18、not be the same as for similar tileshaving plane surfaces. Do not reuse the abrasive grain.8. Calculation of Results8.1 The resistance to deep abrasion is expressed as thevolume (V) of material removed, in mm3. This is calculatedfrom the chord length (l) of the groove by means of theformula:V 5S1802
19、 sin DShd28D(1)where: =3.14sin25ld(d) = the diameter of the rotating disc (200 mm),(h) = the thickness of the rotating disc (10 mm),() = the angle (in degrees) subtended at the center of therotating disc by the chord (see Fig. 2),(l) = the length of chord (mm).Some values are given in Table 1.9. Rep
20、ort9.1 Report the following:9.1.1 Type and size of tile tested,9.1.2 The chord length (l) of each groove to the nearest 0.5mm;9.1.3 The volume (V) of material removed, mm3for eachindividual groove;9.1.4 The average volume, mm3; and9.1.5 State if the volume values were taken from Table 1 orcalculated
21、.10. Precision and Bias10.1 Precision is being determined.11. Keywords11.1 deep abrasive wear; relative resistance; rotating disc;unglazed ceramic tileFIG. 1 Abrasion ApparatusFIG. 2 Definition of ChordC1243 93 (2015)2ASTM International takes no position respecting the validity of any patent rights
22、asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised 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 tim
23、e by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved 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 r
24、eceive careful consideration at a meeting of theresponsible technical committee, which you may attend. If 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 I
25、nternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or th
26、rough the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Predetermined Values(l)(v)(l)(v)(l)(v)(l)(v)(l)(v)mm mm3mm mm3mm mm3mm mm3mm mm320 67 30 227
27、40 540 50 1062 60 185120.5 72 30.5 238 40.5 561 50.5 1094 60.5 189821 77 31 250 41 582 51 1128 61 194721.5 83 31.5 262 41.5 603 51.5 1162 61.5 199622 89 32 275 42 626 52 1196 62 204622.5 96 32.5 288 42.5 649 52.5 1232 62.5 209723 102 33 302 43 672 53 1268 63 214923.5 109 33.5 316 43.5 696 53.5 1306
28、63.5 220224 116 34 330 44 720 54 1342 64 225624.5 123 34.5 345 44.5 746 54.5 1380 64.5 231025 131 35 361 45 771 55 1419 65 236325.5 139 35.5 378 45.5 798 55.5 1459 65.5 242226 147 36 393 46 824 56 1499 66 247926.5 156 36.5 409 46.5 852 56.5 1541 66.5 253727 165 37 427 47 880 57 1583 67 259627.5 174 37.5 444 47.5 909 57.5 1625 67.5 265628 184 38 462 48 938 58 1669 68 271728.5 194 38.5 481 48.5 968 58.5 1713 68.5 277929 205 39 500 49 999 59 1758 69 284229.5 215 39.5 520 49.5 1030 59.5 1804 69.5 2906C1243 93 (2015)3
