1、Designation: C 1261 07Standard Specification forFirebox Brick for Residential Fireplaces1This standard is issued under the fixed designation C 1261; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe
2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 manufacture
3、d 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 constituents to provide the strength and durabilityrequirements of this specification.
4、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 values stated in inch-pound units are to be regardedas the standard. The
5、 values given in parentheses are forinformation only.1.4 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.2. Referenced Documen
6、ts2.1 ASTM Standards:2C24 Test Method for Pyrometric Cone Equivalent (PCE) ofFireclay and High Alumina Refractory MaterialsC43 Terminology of Structural Clay ProductsC67 Test Methods for Sampling and Testing Brick andStructural Clay Tile3. Terminology3.1 DefinitionsFor definitions of terms relating
7、to thisspecification, see Terminology C43.4. Materials, Manufacture, and Finish4.1 Clay, as it occurs in nature, differs in composition andphysical properties. These differences are compensated for byvarying the manufacture processes of forming and firing. Inorder to be satisfactory for firebox bric
8、k 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 by mold-ing, pressing, or extruding and cutting. Firebox brick shall be100 % solid
9、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 Properties5.1 Modulus of RuptureResi
10、dential 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 Tolerances6.1 SizeThe size of the firebox brick shall be as specifiedby the purchaser. In the sa
11、mple of units, no firebox brick shalldepart from the specified size by more than the maximumpermissible variation given in Table 1.6.2 WarpageTolerances for distortion or warpage of faceor edges of individual brick from a plane surface and from astraight line, respectively, shall not exceed the maxi
12、mumpermissible distortion 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 incidental to the usual method of manufacturing or thechippage resulting fr
13、om the customary methods of handling inshipments and delivery shall not be deemed grounds forrejection.6.4 Variation of Appearance RequirementsWhen units arerequired for decorative installations that have appearancerequirements, that is, size variation, distortion, or chippage,other than those presc
14、ribed by this specification, the purchaser1This 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, 2007. Published June 2007. Originallyap
15、proved in 1994. Last previous edition approved in 2005 as C 1261 05.2For 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 w
16、ebsite.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.shall specify the required maximum permissible variation insize or distortion and the allowable extent of chippa
17、ge.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 accordance with TestMethods C67. Test firebox brick in accordance with TestMethods C67for modulus of
18、 rupture, size, and warpage; andTest Method C24for 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 ist
19、ypically 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 seller shall furnish specimensfor tests. The place or places of selection shall be designatedwhen
20、 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(C 1261 05) that may impact the use of this standard. (Approved June 1, 2007.)(1) The title of Section 6 was chan
21、ged from Dimensions andPermissible Variations to Size and Tolerances.ASTM 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 an
22、y such patent rights, and the riskof infringement 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 i
23、nvited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not receiv
24、ed a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of
25、this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 1 Tolerances on DimensionsSpecified Dimension,in. (mm)Maximum PermissibleVariation, 6 in. (mm)MaximumPermissibleDistortion, 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)C1261072
