1、Designation:C21217Standard Specification forStructural Clay Facing Tile1This standard is issued under the fixed designation C212;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indica
2、tes the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers structural clay loadbearingfacing tile.Structural facin
3、g tile are tile designed for use ininterior and exterior unplastered walls and partitions of build-ings.1.2 The property requirements of this specification apply atthe time of purchase.The use of results from testing of tileextracted from masonry structures for determining confor-mance or nonconform
4、ance to the property requirements(Sec-tion 6)of this standard is beyond the scope of this specification.1.3 Tile covered by this specification are manufactured fromclay,shale,or similar naturally occurring substances andsubjected to a heat treatment at elevated temperatures(firing).The heat treatmen
5、t must develop sufficient fired bond betweenthe particulate constituents to provide the strength and dura-bility requirements of this specification.(See firing and firedbond in Terminology C1232.)1.4 The text of this specification references notes andfootnotes which provide explanatory material.Thes
6、e notes andfootnotes(excluding those in tables and figures)shall not beconsidered as requirements of the specification.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onl
7、yand are not considered standard.1.6 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 Standards,Guides and Recom-mendations issued by the World Trade O
8、rganization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sampling and Testing Brick andStructural Clay TileC1232 Terminology of Masonry3.Terminology3.1 DefinitionsFor definitions relating to structural clayfacing tile,refer to Terminology C1
9、232.4.Classification4.1 Two types of structural clay facing tile are covered,asfollows:4.1.1 Type FTXSmooth-face tile suitable for general usein exposed exterior and interior masonry walls and partitions,and adapted for use where tile low in absorption,easilycleaned,and resistant to staining are req
10、uired,and where a highdegree of mechanical perfection,narrow color range,andminimum variation in face dimensions are desired.4.1.2 Type FTSSmooth-or rough-texture face tile suitablefor general use in exposed exterior and interior masonry wallsand partitions and adapted for use where tile of moderate
11、absorption,moderate variation in face dimensions,and me-dium color range are permitted,and where minor defects insurface finish,including small handling chips,are not objec-tionable.4.2 Two classes of structural clay facing tile are covered,asfollows:4.2.1 StandardTile suitable for general use in ex
12、terior orinterior masonry walls and partitions.4.2.2 Special DutyTile suitable for general use in exterioror interior masonry walls and partitions,and designed to havesuperior resistance to impact and moisture transmission and tosupport greater lateral and compressive loads than standard tileconstru
13、ction.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 June 1,2017.Published July 2017.Originally approvedin 1946.Last previous edition ap
14、proved in 2014 as C21214.DOI:10.1520/C0212-17.2For 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.*A Summary of Change
15、s section appears at the end of this standardCopyright 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 principles on standardization established in the Decision o
16、n Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 5.Ordering Information5.1 Orders for material under this specification shall includethe following information:5.1.1 TypeSee 4.1.5.1.2 ClassSee 4.2.When class is not specified,therequirements for standard tile shall govern.If special duty tileare desired,the words“special duty”shall be included in thespecifications.Special duty ti