1、Designation: C1261 10Standard 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
2、in parentheses 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 f
3、rom 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 constituents to provide the strength and durabilityrequirements of this specification (se
4、e 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 variations in thefirebox brick.1.3 The text of this specification references notes andfoot
5、notes 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 be regardedas standard. The values given in parentheses are mathematicalconversions
6、to SI units that are provided 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 TileC12
7、32 Terminology of Masonry3. Terminology3.1 DefinitionsFor definitions of terms relating to thisspecification, see Terminology C1232.4. Materials, Manufacture, and Finish4.1 Clay, as it occurs in nature, differs in composition andphysical properties. These differences are compensated for byvarying th
8、e 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 must also have sufficient tensilestrength to maintain shape.4.2 Firebox brick are shaped during manuf
9、acture by mold-ing, pressing, or extruding and cutting. Firebox brick shall be100 % 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 thest
10、rength 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 (PCE)Firebox brickshall have a minimum pyrometric cone equivalent (PCE) of 13.6. Size and Tolera
11、nces6.1 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 maximumpermissible variation given in Table 1.6.2 WarpageTolerances for warpage of face or edges ofindividual brick from a pl
12、ane surface and from a straight line,respectively, shall not exceed the maximum permissiblewarpage given in Table 1.6.3 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 in
13、cidental to the usual method of manufacturing or the1This 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 Aug. 1, 2010. Published September 201
14、0. Originallyapproved in 1994. Last previous edition approved in 2007 as C1261 07. DOI:10.1520/C1261-10.2For 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 standard
15、s Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.chippage resulting from the customary methods of handling inshipments and de
16、livery shall not be deemed grounds forrejection.6.4 Variation of Appearance RequirementsWhen units arerequired for decorative installations that have appearancerequirements, that is, size variation, warpage, or chippage,other than those prescribed by this specification, the purchasershall specify th
17、e required maximum permissible variation insize or warpage and the allowable extent of chippage.6.5 WasteThe number of firebox brick in a delivery thatare broken or otherwise fail to meet the requirements of Table1 shall not exceed 5 %.7. Sampling and Testing7.1 The brick shall be sampled in accorda
18、nce with TestMethods C67. Test firebox brick in accordance with TestMethods C67 for modulus of rupture, size, and warpage; andTest Method C24 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
19、tests show that thebrick do not conform to the requirements of this specification, the cost istypically borne by the seller. If the results of the tests show that the brickdo conform to the requirements of this specification, the cost is typicallyborne by the purchaser.7.2 The manufacturer or the se
20、ller shall furnish specimensfor tests. The place or places of selection shall be designatedwhen the purchase order is placed.8. Keywords8.1 brick; firebox; fireplaceSUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue(C1261 07) that ma
21、y impact the use of this standard. (Approved Aug. 1, 2010.)(1) The word “distortion” was either deleted or replaced withthe word “warpage.”(2) Reference to Terminology C1232 was added to 1.2.(3) The units statement in 1.4 was updated.ASTM International takes no position respecting the validity of an
22、y 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 infringement of such rights, are entirely their own responsibility.This standard is subject to rev
23、ision 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 or for additional standardsand should be addressed to ASTM International Headquarters. Your
24、 comments will receive careful consideration at a meeting of theresponsible technical committee, which you 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 copyr
25、ighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United 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
26、 (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Tolerances on DimensionsSpecified Dimension,in. (mm)Maximum PermissibleVariation, 6 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), incl19 (3.2)564 (2.0)over 8 to 12 (203 to 305), incl532 (4.0)18 (3.2)C1261 102
