1、Designation: C 530 99 (Reapproved 2005)Standard Specification forStructural Clay Nonloadbearing Screen Tile1This standard is issued under the fixed designation C 530; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 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 specification covers unglazed, structural clay, non-loadbearing screen tile.1.2 The property requirements of this st
3、andard apply at thetime of purchase. The use of results from testing of tileextracted from masonry structures for determining conform-ance or nonconformance to the property requirements (Section5) of this standard is beyond the scope of this standard.1.3 Tile covered by this standard are manufacture
4、d fromclay, shale, or similar naturally occurring substances andsubjected to a heat treatment at elevated temperatures (firing).The heat treatment must develop sufficient fired bond betweenthe particulate constituents to provide the strength and dura-bility requirements of this specification. (See f
5、iring and firedbond in Terminology C43).1.4 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of the standard.2. Referenced Documents2.1 ASTM Standards:2C
6、43 Terminology of Structural Clay ProductsC67 Test Methods for Sampling and Testing Brick andStructural Clay Tile3. Grades3.1 Three grades of screen tile, based on relative durability,are covered as follows:NOTE 1Screen walls present many more exposed surfaces than otherbrick or tile walls, the ques
7、tion of durability and selection of grade may bemore critical in the screen walls. For this reason, these requirements aremore conservative than for brick.3.1.1 Grade SEScreen tile exhibiting a uniformly highresistance to disintegration by weathering or by freezing orthawing in the presence of moist
8、ure.3.1.2 Grade MEScreen tile exhibiting a moderate andsomewhat nonuniform resistance to weathering. Grade ME tileexhibit good durability in areas of mild to moderate exposurebut may not be adequate for severe exposures.3.1.3 Grade NEScreen tile for interior use (no exposure torain or freezing).3.2
9、When the grade is not specified, the requirements forGrade ME shall govern.3.3 Grade SE tile may be accepted in lieu of Grades ME orNE. Grade ME tile may be accepted in lieu of Grade NE.4. Types4.1 Two types of screen tile, based on dimensional toler-ances, are covered as follows:4.1.1 Type STXScree
10、n tile having a high degree of me-chanical perfection and minimum size variation.4.1.2 Type STAScreen tile exhibiting characteristic archi-tectural effects resulting from a larger degree of size variationthan obtainable with Type STX.4.2 When type is not specified, the requirements for TypeSTA shall
11、 govern.5. Physical Properties5.1 DurabilityScreen tile shall meet the properties pre-scribed in Table 1 for resistance to absorption.6. Dimensions and Permissible Variations6.1 The dimensions of screen tile units shall be specified bythe purchaser.NOTE 2Since screen tile are available in numerous s
12、izes and shapes,the purchaser must specify these items. All sizes and shapes are notnecessarily available in all parts of the United States. Therefore, thespecifier should ascertain local availability before specifying a particularunit size or pattern.6.2 No screen tile shall have greater dimensiona
13、l variationthan that permitted in Table 2.1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.02 on Brick and Structural Clay Tile.Current edition approved May 15, 2005. Published June 2005. Originallyap
14、proved in 1963. Last previous edition approved in 1999 as C 53099.2For 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 web
15、site.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7. Finish7.1 Tile surfaces shall be smooth, scored, combed, orroughened as specified by the purchaser.8. Color, Texture, and Pattern8.1 Color, texture, and pattern shall be specifi
16、ed by thepurchaser. The texture and color range that will be visible in thefinished wall shall conform to an approved sample of at leastfour representative units.NOTE 3Tile colors vary with clay type and degree of burning. Colordoes not indicate tile classification unless it has been related to abso
17、rptionand strength by tests.Because a multitude of individual unit patterns and wall patterns areavailable, screen-wall strength in every direction may not be related to thecompressive strength of individual units. Designers are cautioned toinvestigate each wall design thoroughly and to provide suff
18、icient expan-sion and pressure-relieving joints to eliminate induced forces that mightcreate critical stresses in screen-wall units.9. Optional Requirements9.1 If the purchaser desires closer dimensional tolerances,restrictions on chippage or roughness, or other requirementsnot specifically containe
19、d in this specification, he must so statein a supplemental specification.10. Sampling and Testing10.1 Sample and test tile in accordance with Test MethodsC67.11. Inspection11.1 All tile shall be reasonably free from laminations andfrom defects that impair the placement, strength, or perma-nence of t
20、he construction.12. Keywords12.1 clay; masonry construction; nonloadbearing tile; physi-cal properties; screen tile; shale; 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
21、 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 technical committee and must be reviewed every five years andif not r
22、evised, 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 at a meeting of theresponsible technical committee, which you
23、 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 Drive, PO Box C700, West Conshohocken, PA 19428-2959,United
24、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).TABLE 1 Physical PropertiesGradeMaximum Water Absorpt
25、ion by 1-h Boiling,percentAverage of FiveTestsIndividualSE 10 12ME 14 16NE 20 24TABLE 2 Dimensions and Permissible VariationsSpecified Dimension,in. (mm)Maximum Permissible Variations fromSpecified Dimensions, Plus or Minus,in. (mm)TypeSTXTypeSTAUp to 4, incl. (101.6)332 (2.38)432 (3.18)Over 4 to 6 (101.6 to 152.4)432 (3.18)632 (4.76)Over 6 to 8 (152.4 to 203.2)532 (3.96)832 (6.35)Over 8 to 12 (203.2 to 304.8)732 (5.56)1032 (7.94)Over 12 (304.8)932 (7.14)1232 (9.52)C 530 99 (2005)2
