1、Designation: C1261 13 (Reapproved 2017)1Standard 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
2、revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEReapproved with editorial change in Table 1 in December 2017.1. Scope1.1 This specification covers brick intended for use as theli
3、ning in the fireboxes of residential fireplaces.1.2 Firebox brick are manufactured from clay, fire 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 const
4、ituents to provide the strength and durabilityrequirements of this specification (see Terminology C1232).NOTE 1Firebox brick are typically installed using ground fire claymortar or refractory mortar. Mortar joints are typically18 in. (3.2 mm)thick, just thick enough to accommodate dimensional variat
5、ions in thefirebox brick.1.3 The text of this specification references notes andfootnotes that provide 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
6、be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization establishe
7、d in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C24 Test Method for Pyrometric Cone Equivalent (PCE) ofFireclay and
8、High Alumina Refractory MaterialsC67 Test Methods for Sampling and Testing Brick andStructural Clay TileC1232 Terminology for Masonry3. Terminology3.1 DefinitionsFor definitions of terms relating to thisspecification, see Terminology C1232.4. Materials and Manufacture4.1 Clay, as it occurs in nature
9、, differs in composition andphysical properties. These differences are compensated for byvarying the manufacture processes of forming and firing. Inorder to be satisfactory for firebox brick production, clays musthave plasticity that permits them to be shaped or molded whenmixed with water. Clays mu
10、st also have sufficient tensilestrength to maintain shape.4.2 Firebox brick are shaped during manufacture bymolding, pressing, or extruding and cutting. Firebox brick shallbe 100 % solid with no cores or frogs.4.3 Firebox brick shall be free of defects, deficiencies, andsurface treatments, including
11、 coatings, that would interferewith the proper setting of the brick or significantly impair thestrength or performance of the construction.5. Physical Properties5.1 Modulus of RuptureResidential firebox brick shallhave a minimum modulus of rupture of 500 psi (3.45 MPa).5.2 Pyrometric Cone Equivalent
12、 (PCE)Firebox brick shallhave a minimum pyrometric cone equivalent (PCE) of 13.6. Dimensions and Permissible Variations6.1 SizeThe size of the firebox brick shall be as specifiedby the purchaser. In the sample of units, no firebox brick shalldepart from the specified size by more than the maximumper
13、missible 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,respectively, shall not exceed the maximum permissible war-page given in Table 1.1This specification is under the jurisdiction of ASTM Committee C15
14、 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.02 on Brick and Structural Clay Tile.Current edition approved Dec. 1, 2017. Published January 2018. Originallyapproved in 1994. Last previous edition approved in 2013 as C1261 13. DOI:10.1520/C1261-13R17E01.2For refere
15、nced 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 standardCopyrig
16、ht 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 on Principles for theDevelopment of Internationa
17、l Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.17. 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
18、indentations or surfacecracks incidental to the usual method 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
19、that have appearancerequirements, 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 de
20、livery thatare broken or otherwise fail to meet the requirements of Table1 shall not exceed 5 %.8. Sampling and Testing8.1 The brick shall be sampled in accordance with TestMethods C67. Test firebox brick in accordance with TestMethods C67 for modulus of rupture, size, and warpage; andTest Method C2
21、4 for pyrometric cone equivalence.NOTE 2Unless otherwise specified in the purchase order, the cost oftests is typically borne as follows: If the results of the tests show that thebrick do not conform to the requirements of this specification, the cost istypically borne by the seller. If the results
22、of the tests show that the brickdo conform to the requirements of this specification, the cost is typicallyborne by the purchaser.8.2 The manufacturer or the seller shall furnish specimensfor tests. The place or places of selection shall be designatedwhen the purchase order is placed.9. Keywords9.1
23、brick; firebox; fireplaceASTM 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 expressly advised that determination of the validity of any such patent rights, and the riskof infring
24、ement 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 revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard
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28、600; http:/ 1 Tolerances on DimensionsSpecified Dimension,in. (mm)Maximum PermissibleVariation, in. (mm)MaximumPermissibleWarpage, in. (mm)3 (76) and under116 (1.6)132 (0.8)over 3 to 4 (76 to 102), incl116 (1.6)364 (1.2)over 4 to 6 (102 to 152), incl332 (2.4)116 (1.6)over 6 to 8 (152 to 203), incl18 (3.2)564 (2.0)over 8 to 12 (203 to 305), incl532 (4.0)18 (3.2)Editorially correctedC1261 13 (2017)12
