1、Designation: C 1243 93 (Reapproved 2003)Standard Test Method forRelative Resistance to Deep Abrasive Wear of UnglazedCeramic Tile by Rotating Disc1This standard is issued under the fixed designation C 1243; the number immediately following the designation indicates the year oforiginal adoption or, i
2、n the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 res
3、ulting from abrasion ofunglazed ceramic tile under given conditions by means of arotating disc and the use of abrasive material.1.2 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
4、appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:C 242 Terminology of Ceramic Whitewares and RelatedProducts2C 448 Test Methods for Abrasion Resistance of PorcelainEnamels2C 501 Test Method for
5、Relative Resistance to Wear ofUnglazed Ceramic Tile by the Taber Abraser2C 1027 Test Method for Determining Visible Abrasion Re-sistance of Glazed Ceramic Tile23. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method, seeTerminology C 242.4. Significance and Use4.1 This
6、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 is intended to measure durability. See TestMethod C 1027 for the determination of visible abrasionresistance of gl
7、azed ceramic tile.4.1.1 See Test Method C 501 for an alternative method todetermine deep abrasion.5. Apparatus35.1 Abrasion apparatus (see Fig. 1) consisting essentially ofa rotating disc, a storage hopper with a dispensing device forthe abrasive material, a test specimen support, and a counter-weig
8、ht. The disc is made of Fe 360A steel (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 test specimens are held against the steel disc isdetermined by calibrating the apparatus against float glass(
9、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 C 448,Table A1.4.5.1.1 When the disc diameter has worn to 199 mm, the steeldisc shall be replaced.5.2 A linear measuring gage capable of
10、 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 SpecimensTests shall be carried outusing whole tiles or test specimens of suitable dimensions.Before testing, small s
11、pecimens shall be fixed with an adhesiveonto a larger background, avoiding joints where possible.6.2 SamplingA minimum of five tiles shall be tested.Only tile that show no visible warpage when checked with astraightedge shall be used.7. Procedure7.1 Place a test specimen in the apparatus so that it
12、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 length1This specification is under the
13、 jurisdiction of ASTM Committee C21 onCeramic Whitewares and Related Products and is the direct responsibility ofSubcommittee C21.06 on Ceramic Tile.Current edition approved Oct. 1, 2003. Published October 2003. Originallyapproved in 1993. Last previous edition approved in 1999 as C 1243 - 93 (1999)
14、.2For referenced ASTM standards, visit the 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.3Equipment source: Gabrielli S.R.L., Box 218, 50019 Sesto Fl
15、orentino, Flo-rence, Italy, Fax: 55-42-15-654.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.(l) of the groove by means of the linear measuring gage to thenearest 0.5 mm. Test each test specimen in at least two placesat right angles
16、 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 not be the same as for similar tileshaving plane surfaces. Do not reuse the abrasive grain.8. Calculation of Results8.1 T
17、he 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 5 Spa1802 sin a DShd28D (1)where:p =3.14 sina25ld(d) = the diameter of the rotating disc (200 mm),(h) = the thickness of the ro
18、tating disc (10 mm),(a) = 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. Report9.1 Report the following:9.1.1 Type and size of tile tested,9.1.2 The chord length (l) of each groove to the
19、 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.10. Precision and Bias10.1 Precision is being determined.11. Keywords11.1 deep abrasive wear; relative resista
20、nce; rotating disc;unglazed ceramic tileFIG. 1 Abrasion ApparatusFIG. 2 Definition of ChordC 1243 93 (2003)2ASTM 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 advised t
21、hat 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 reapp
22、roved 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 you
23、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. Individual r
24、eprints (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 through the ASTM website(www.astm.org).TABLE 1 Predetermined Values(l)(v)(l)(v)(l)(v)(l)(v)(l)(v)mm mm3mm mm3mm
25、mm3mm mm3mm mm320 67 30 227 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
26、33.5 316 43.5 696 53.5 1306 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 2906C 1243 93 (2003)3
