1、Designation: C 484 99 (Reapproved 2003)Standard Test Method forThermal Shock Resistance of Glazed Ceramic Tile1This standard is issued under the fixed designation C 484; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast 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 determination of the resis-tance to thermal shock of glazed ceramic tiles under normalcond
3、itions of use.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.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
4、 establish 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 373 Test Method for Water Absorption, Bulk Density,Apparent Porosity, an
5、d Apparent Specific Gravity of FiredWhiteware Products23. Terminology3.1 DefinitionsFor the definitions of terms used on thistest method, refer to Terminology C 242.4. Summary of Test Method4.1 This test method consists of determining the thermalshock resistance of ceramic tiles by cycling a sample
6、ten timesbetween the temperatures of 15 6 5C (59 6 9F) and 145 65C (293 6 9F). This test method includes two procedures,with and without immersion, for tiles with a water absorptionless than or equal to 10 % and tiles with a water absorptiongreater than 10 %, respectively. After completing ten cycle
7、s,the tiles are inspected for any damage as a result of the cycling.5. Significance and Use5.1 This test method is intended for testing glazed ceramictile that are to be used in areas in which they may be subjectedto rapid or severe temperature changes.6. Apparatus6.1 Water Bath, for testing with im
8、mersion, through which15 6 5C (59 6 9F) water flows at a rate of 1 gal/min. Thebath shall hold at least 5 gal (19 L) of water and shall be ofdimensions such that five whole tiles are immersed completelywhen placed in the bath vertically.6.2 Covered Water Bath, for testing without immersion,consistin
9、g of the Water Bath in 6.1 covered with an aluminumsheet and layer of aluminum grains. The aluminum sheet shallbe 5.18mm (0.204in.) thickNo. 4 B glazed ceramic tile; thermal shockresistanceASTM International takes no position respecting the validity of any patent rights asserted in connection with a
10、ny 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 time by the responsible technica
11、l 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 receive careful consideration
12、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 International, 100 Barr Harbor
13、 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 through the ASTM website(www.astm.org).C 484 99 (2003)2
