1、Designation:C47904(Reapproved 2013)Standard Specification forVitrified Clay Liner Plates1This standard is issued under the fixed designation C479;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 p
2、arentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification establishes the criteria for the accep-tance of vitrified clay liner plates used to protectively line orface pipe,culverts,abutment
3、s,structures,or appurtenances.1.2 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 onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2C43 Terminolog
4、y of Structural Clay Products(Withdrawn2009)3C301 Test Methods for Vitrified Clay Pipe3.Terminology3.1 DefinitionsClay,fire clay,shale,and surface clay aredefined in Terminology C43.4.Classification4.1 Liner plates manufactured in accordance with this speci-fication shall be known as curved liner pl
5、ates or flat linerplates.5.Materials and Manufacture5.1 Liner plates shall be manufactured from fire clay,shale,surface clay,or a combination of these materials that,whenformed into liner plates and fired to suitable temperatures,yielda product that is strong,durable,serviceable,free of objection-ab
6、le defects,and conform to this specification.6.Physical and Chemical Requirements6.1 AbsorptionThe absorption of liner plates shall notexceed 6%.6.2 Acid Resistance:6.2.1 This test is used to determine the resistance of linerplates to the action of acids.The test shall be performed onlywhen specifie
7、d.6.2.2 Liner plates shall be acceptable if the acid-solublematter does not exceed 0.25%.7.Dimensions and Permissible Variations7.1 Tenon Ribs:7.1.1 Liner plates shall have either three or five longitudinal,monolithic,dovetail tenon ribs uniformly and symmetricallyspaced on the back of the plate(see
8、 Note 1).When five tenonribs are used,the outer fin of the exterior tenons shall beeliminated so that parallel jointing faces between abuttingplates may be achieved.NOTE1Special liner plates are available for linings where tenon ribsare not desired.They are furnished in the same thickness,length,and
9、width as standard liner plates.7.1.2 Tenon ribs shall be of trapezoidal cross section tofirmly key or attach the plate into the backup material with amortising type of fastening.The ratio of the dimension of thelarger base to the smaller base shall be about 8 to 5,with thesmaller base dimension to b
10、e58618in.(16 6 3.2 mm).Thesmaller base of the trapezoid shall be adjacent to the liner plate.7.2 Length:7.2.1 Length is the overall dimension of the liner plate whenmeasured in the same direction as the tenon ribs.7.2.2 Liner plates shall be available in standard lengths of 6in.(150 mm),9 in.(230 mm
11、),12 in.(305 mm),18 in.(460mm),or 24 in.(610 mm),with a tolerance of+0,14in./ft oflength(+0,21 mm/m of length).7.3 Width:7.3.1 The width of curved liner plates shall be 914618in.(235 6 3.2 mm)measured along the radial arc.7.3.2 The width of flat liner plates shall be 9 618in.(2306 3.2 mm).7.4 Thickn
12、essLiner plates,both flat and curved,shall be346116in.(19 6 1.6 mm)thick.Tenon ribs shall be12in.61This specification is under the jurisdiction of ASTM Committee C04 onVitrified Clay Pipe and is the direct responsibility of Subcommittee C04.20 onMethods of Test and Specifications.Current edition app
13、roved Dec.1,2013.Published December 2013.Originallyapproved in 1961.Last previous edition approved in 2008 as C479 04(2008).DOI:10.1520/C0479-04R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards v
14、olume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 116in.(13 6 1.6 mm)thick
15、,which provides an overallthickness,at the tenon rib,of 114618in.(32 6 3.2 mm).7.5 DesignLiner plates are designed to be used in thenumbers and with radii corresponding to inside diameters asdesignated in Table 1.8.Workmanship,Finish,and Appearance8.1 Liner plates shall be uniformly vitrified throug
16、hout theirthickness and have a homogeneous structural texture.Theyshall be free of chips that are more than14by34in.(6.4 by19 mm)in surface dimension or that have a depth greater than1164in.(4.4 mm).They shall be free of well-defined cracks andshall have no blister with a dimension exceeding12in.(13mm)and no blister shall project more than18in.(3.2 mm)above the surface of the liner plate.The edges shall be straightand the corners square to a degree that will permit smooth andadequate peripheral
