1、Designation:C126113Standard Specification forFirebox Brick for Residential Fireplaces1This standard is issued under the fixed designation C1261;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 par
2、entheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers brick intended for use as thelining in the fireboxes of residential fireplaces.1.2 Firebox brick are manufactured from clay,f
3、ire clay,shale,or similar naturally occurring earthy substances andsubjected to a heat treatment at elevated temperatures(firing).The heat treatment must develop a fired bond between theparticulate constituents to provide the strength and durabilityrequirements of this specification(see Terminology
4、C1232).NOTE1Firebox brick are typically installed using ground fire claymortar or refractory mortar.Mortar joints are typically18in.(3.2 mm)thick,just thick enough to accommodate dimensional variations in thefirebox brick.1.3 The text of this specification references notes andfootnotes that provide
5、explanatory material.These notes andfootnotes(excluding those in tables and figures)shall not beconsidered as requirements of this specification.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are pr
6、ovided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2C24 Test Method for Pyrometric Cone Equivalent(PCE)ofFireclay and High Alumina Refractory MaterialsC67 Test Methods for Sampling and Testing Brick andStructural Clay TileC1232 Terminology of Masonry3
7、.Terminology3.1 DefinitionsFor definitions of terms relating to thisspecification,see Terminology C1232.4.Materials and Manufacture4.1 Clay,as it occurs in nature,differs in composition andphysical properties.These differences are compensated for byvarying the manufacture processes of forming and fi
8、ring.Inorder to be satisfactory for firebox brick production,clays musthave plasticity that permits them to be shaped or molded whenmixed with water.Clays must also have sufficient tensilestrength to maintain shape.4.2 Firebox brick are shaped during manufacture bymolding,pressing,or extruding and c
9、utting.Firebox brick shallbe 100%solid with no cores or frogs.4.3 Firebox brick shall be free of defects,deficiencies,andsurface treatments,including coatings,that would interferewith the proper setting of the brick or significantly impair thestrength or performance of the construction.5.Physical Pr
10、operties5.1 Modulus of RuptureResidential firebox brick shallhave a minimum modulus of rupture of 500 psi(3.45 MPa).5.2 Pyrometric Cone Equivalent(PCE)Firebox brick shallhave a minimum pyrometric cone equivalent(PCE)of 13.6.Dimensions and Permissible Variations6.1 SizeThe size of the firebox brick s
11、hall be as specifiedby the purchaser.In the sample of units,no firebox brick shalldepart from the specified size by more than the maximumpermissible variation given in Table 1.6.2 WarpageTolerances for warpage of face or edges ofindividual brick from a plane surface and from a straight line,respecti
12、vely,shall not exceed the maximum permissible war-page given in Table 1.7.Finish and Appearance7.1 Visual InspectionThe brick,as delivered to the site,shall conform by visual inspection to the samples approved asthe standard of comparison.Minor indentations or surfacecracks incidental to the usual m
13、ethod of manufacturing or thechippage resulting from the customary methods of handling inshipments and delivery shall not be deemed grounds forrejection.7.2 Variation of Appearance RequirementsWhen units arerequired for decorative installations that have appearance1This specification is under the ju
14、risdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.02 on Brick and Structural Clay Tile.Current edition approved Dec.1,2013.Published December 2013.Originallyapproved in 1994.Last previous edition approved in 2010 as C1261 10.DOI:10.1520
15、/C1261-13.2For 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 Changes section appears at the end of this
16、 standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 requirements,that is,size variation,warpage,or chippage,other than those prescribed by this specification,the purchasershall specify the required maximum permissible variation insize or warpage and the allowable extent of chippage.7.3 WasteThe number of firebox brick in a delivery thatare broken or otherwise fail to meet the requirements of Table1 shall not exceed 5%.8.Sampling
