1、Designation: C126 16C126 17Standard Specification forCeramic Glazed Structural Clay Facing Tile, Facing Brick,and Solid Masonry Units1This standard is issued under the fixed designation C126; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This speci
3、fication covers structural clay load-bearing facing tile and facing brick and other “solid masonry units” made fromclay, shale, fire-clay, or mixtures thereof, with or without the addition of grog or other mixtures, having a finish consisting of aceramic glaze fused to the body at above 1500F (655C)
4、 making them inseparable, excluding natural salt-glazed ware. Twogrades, based on permissible variation in face dimensions, and two types are covered, as follows:1.1.1 Grade S (select), for use with comparatively narrow mortar joints.1.1.2 Grade SS (select sized or ground edge), for use where variat
5、ion of face dimension must be very small.1.1.3 Type I (single-faced units), for general use where only one finished face will be exposed.1.1.4 Type II (two-faced units), for use where two opposite finished faces will be exposed.1.2 The property requirements of this specification apply at the time of
6、 purchase. The use of results from testing of brick andtile extracted from masonry structures for determining conformance or nonconformance to the property requirements (Section 5)of this standard is beyond the scope of this specification.1.3 Brick and tile covered by this specification are manufact
7、ured from clay, shale, or similar naturally occurring substances andsubjected to a heat treatment at elevated temperatures (firing). The heat treatment must develop sufficient fired bond between theparticulate constituents to provide the strength requirements of this specification. (See firing and f
8、ired bond inTerminology C1232.)1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be considered as requirements of the standard.1.5 The values stated in inch-pound units are to be
9、 regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.6 The following precautionary caveat pertains only to the test portion (Section 11.2) of this specification. This standard doesnot p
10、urport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standardto establish appropriate safety safety, health, and healthenvironmental practices and determine the applicability of regulatorylimitations prior to use.1.7 This interna
11、tional standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Commit
12、tee.2. Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sampling and Testing Brick and Structural Clay TileC1232 Terminology for MasonryE84 Test Method for Surface Burning Characteristics of Building MaterialsE2105 Practice for General Techniques of Thermogravimetric Analysis (TGA) Coupl
13、ed With Infrared Analysis (TGA/IR)1 This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.02 on Brickand Structural Clay Tile.Current edition approved June 1, 2016Dec. 1, 2017. Published July 2016January
14、2018. Originally approved in 1936. Last previous edition approved in 20152016 asC126 15.C126 16. DOI: 10.1520/C0126-16.10.1520/C0126-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume inf
15、ormation, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately
16、depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM Interna
17、tional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 National Fire Protection Association Standard:3NFPA No. 255 Test for Surface Burning Characteristics of Building Materials2.3 Underwriters Laboratories, Inc. Standard:4UL No. 723 Flammability Studies of C
18、ellular Plastics and other Building Materials used for Interior Finishes3. Terminology3.1 DefinitionsFor definitions relating to ceramic glazed structural clay facing tile, facing brick, and solid masonry units, referto Terminology C1232.4. Ordering Information4.1 Orders for material under this spec
19、ification shall include the following information:4.1.1 GradeWhen the grade is not specified, the requirements for Grade S shall govern.4.1.2 TypeWhen the type is not specified, the requirements for Type I shall govern.4.1.3 Sizes and ShapesThe sizes and shapes shall be specified in accordance with
20、Section 6.1.4.1.4 Color and Texture of FinishThe color and texture of the finish shall be specified in accordance with Section 7.6.4.1.5 Back SurfacesUnless otherwise specified, smooth, scored, combed, or roughened unglazed backs and smooth unselectedglazed backs or a mixture thereof, are furnished.
21、 When plaster is to be applied, the back surface shall be specified in accordancewith Section 7.5.4.1.6 CoringUnless otherwise specified, either standard or special duty units as prescribed in Section 10 are furnished.4.1.7 OpacityWhere ceramic glazed units are not specified as opaque, they need not
22、 meet the requirements for opacityprescribed in 7.4.2.4.1.8 Exterior UseWhere ceramic glazed units are required for exterior use, the manufacturers shall be consulted for materialsuitable for this purpose.NOTE 1The requirements included in this specification do not cover minimum criteria for durabil
23、ity of units exposed to exterior environments.5. Physical Properties5.1 The compressive strengths (based on gross area) of the units shall be not less than the values prescribed in Table 1.NOTE 2Special duty units may be available from various manufacturers where higher compressive strengths are req
24、uired.6. Dimensions and Permissible Variations6.1 The face sizes of ceramic glazed units and fittings therefore shall be as specified.NOTE 3The sizes shown in Table 2 are standard in the industry for single-faced units (Type I).6.2 Face Dimension TolerancesThe total variation in the finished face di
25、mensions of units shall be not more than the valuesshown in Table 3.6.3 Bed-Depth Dimension TolerancesThe total variation in the bed-depth (through the wall) dimension of units shall be notmore than the value shown in Table 4.6.4 Warpage TolerancesThe maximum permissible deviation of the plane and t
26、he edges of the face of individual units froma plane surface and from a straight line, respectively, shall not exceed the value shown in Table 5.NOTE 4When convex units are laid upon a plane surface, the apparent variation is greater than the actual variation from the plane of the unit.7. Finish and
27、 Appearance7.1 The body of the units shall be free of cracks or other imperfections which would impair the strength or durability of themasonry.7.2 Unless otherwise agreed upon between the purchaser and the seller, a delivery of brick or tile shall not contain more than3 % brick or tile that are chi
28、pped, cracked or broken.3 Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http:/www.nfpa.org.4 Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096, http:/.TABLE 1 Compressive Strengths of UnitsDirection o
29、fCoringMinimum Average of FiveTests, psi (MPa)Individual Minimum, psi(MPa)VerticalHorizontal3 000 (20.7)2 000 (13.8)2 500 (17.2)1 500 (10.3)C126 1727.3 The finished face (one face of stretcher units and the finished faces of shapes) that will be exposed when in place shall becovered with a ceramic g
30、laze of uniform quality. The glaze shall be free of chips, crazes, blisters, crawling, or other imperfectionsdetracting from the appearance of the finished wall when viewed from a distance of 5 ft (1.52 m) under diffused lighting at rightangles from the wall.NOTE 5The purchaser or his authorized rep
31、resentative shall be accorded opportunity for sampling and inspecting units at the place of manufacture,prior to shipment. At least 10 days from the time of sampling should be allowed for completion of the tests. Unless otherwise specified in the purchaseorder, the cost of tests is typically borne a
32、s follows: If the results of the tests show that the brick does not conform to the requirements of this specification,TABLE 2 Size of Single-Faced UnitsSeriesDesignationSpecified Face Dimensions Specified Thickness, in. (mm)Height, in. (mm) Length, in. (mm)4S 214 (57.2) 758 (193.7) 134 , 358, 558, o
33、r 758 (44.5, 92.1, 142.9, or 193.7)4W 758 (193.7) 758 (193.7) 134 , 358, 558, or 758 (44.5, 92.1, 142.9, or 193.7)6P 358 (92.1) 1158 (295.3) 134 , 358, 558, or 758 (44.5, 92.1, 142.9, or 193.7)6T 5 (127) 111116 (296.9) 134 , 358, 558, or 758 (44.5, 92.1, 142.9, or 193.7)8W 758 (193.7) 1558 (396.9) 1
34、34 , 358, 558, or 758 (44.5, 92.1, 142.9, or 193.7)TABLE 3 Permissible Variations in Face DimensionsNOTE 1Permissible variations for units having specified dimensionsmore than 14 in. (6.4 mm) greater than shown in this table shall be thesame as for the next larger dimension.Specified FaceDimension,
35、Return orReveal (Height,Length), in. (mm)Maximum DifferenceBetween Dimensionof Any Unit andthe Specified DimensionMaximum Differ-ence BetweenLargest and Small-est Unit in OneLot,A in. (mm)If Larger,in. (mm) If Smaller,in. (mm)Grade S Units6 (152.4) and Under 116 (1.6) 332 (2.4) 332 (2.4)Over 6 to 8(
36、152.4 to 203.2)116 (1.6) 18 (3.2) 532 (4.0)Over 8 to 16(203.2 to 406.4)116 (1.6) 532 (4.0) 316 (4.8)Grade SSSelect Sized or Ground-Edge Units OnlyAny dimension 116 (1.6) 116 (1.6) 18 (3.2)ASize of lot shall be determined by agreement between the purchaser and theseller.TABLE 4 Permissible Variation
37、in Bed Depth DimensionsNOTE 1Permissible variations for units having specified dimensionsmore than 14 in. (6.4 mm) greater than shown in this table shall be thesame as for the next larger dimension.NOTE 2Variation in the bed depth of individual units is controlled bythe limitations on warpage. The t
38、hickness of a unit shall be consideredeither the maximum or minimum thickness, whichever is the farther fromthe specified dimension.Specified Bed DepthDimension (WallThickness), in. (mm)Maximum DifferenceBetween Dimensionof Any Unit andthe Specified DimensionMaximumDifferenceBetweenLargestand Smalle
39、stUnit in OneLot, in. (mm)AIf Larger,in. (mm)If Smaller,in. (mm)Type ISingle-Faced Units2 (50.8) and Under 18 (3.2) 18 (3.2) 18 (3.2)Over 2 to 4(50.8 to 101.6)18 (3.2) 316 (4.7) 316 (4.7)Over 4 to 6(101.6 to 152.4)18 (3.2) 14 (6.4) 14 (6.4)Over 6 to 8(152.4 to 203.2)18 (3.2) 516 (7.9) 516 (7.9)Type
40、IITwo-Faced Units8 (203.2) and Under 18 (3.2) 18 (3.2) 18 (3.2)ASize of lot shall be determined by agreement between the purchaser and theseller.C126 173the cost is typically borne by the seller. If the results of the tests show that the brick does conform to the requirements of this specification,
41、the cost istypically borne by the purchaser.7.4 Properties of Glaze:7.4.1 ImperviousnessAfter the imperviousness test, no stain seen from a distance of 5 ft (1.5 m) shall remain on or beneaththe surface, except a slight discoloration in the depressions on matt, stippled, or mottled finishes.7.4.2 Op
42、acityWhere opacity of finish is desired and so specified, discoloration of the body shall not be visible through theglaze in the opacity test. Clear ceramic glazes and special decorative glazes shall not be required to meet this requirement.7.4.3 Resistance to FadingThe color of the glaze shall not
43、change in the chemical resistance test. Finishes of metallic orspecial decorative glazes shall not be required to meet this requirement.7.4.4 Resistance to CrazingThe glaze shall not craze, spall, or crack when subjected to one cycle of autoclaving in the crazingtest.7.4.5 Flame Spread Index (FSI) a
44、nd Smoke Density Index (SDI)Body and finish shall withstand temperatures up to 1900F(1037.8C) without distortion or melting and rate “non-combustible.” When tested in accordance with the provisions of TestMethod E84, structural facing tile shall measure 0 flame spread index and 0 smoke density index
45、.NOTE 6This test method is similar to that specified in NFPA No. 255 and UL No. 723.7.4.6 FumesUnder thermogravimetric analysis (TGA), in a flowing air atmosphere, weight loss due to release of gases fromthe body and glaze finish shall not exceed 0.2 % of dry weight at temperatures up to 1800F (982.
46、2C).NOTE 7See Practice E2105 for TGA only. TGA test results can be a measure of sample combustibility. Very low weight loss under TGA willdemonstrate non-combustibility coupled with low flame spread index and smoke density index.7.4.7 Scratch Resistance and HardnessGlaze must resist scratching by or
47、dinary glass or steel and be rated above five on theMohs Hardness Scale. Finishes of metallic or special decorative glazes shall not be required to meet this requirement.7.5 Plaster Base Finish:7.5.1 Unless otherwise specified by the purchaser, smooth, scored, combed or roughened-back units or a mix
48、ture thereof arefurnished.7.5.2 When smooth, at least 90 % of the tile area shall be free of glaze and the average absorption shall be not less than 5 %,unless acceptable plaster adhesion bond test data is provided.7.5.3 When scored, each groove shall be dovetailed and shall be not less than 116 in.
49、 (1.6 mm) nor more than 14 in. (6.4 mm)in depth, and not more than 1 in. (25.4 mm) in width. The area covered by the grooves shall not exceed 50 % of the area of thescored faces.7.5.4 When combed, the tile shall be scarified, prior to burning, by mechanical means which shall make scarifications on thesurface of the tile not less than 116 in. (1.6 mm) nor more than 18 in. (3.2 mm) in depth, and not more than 14 in. (6.4 mm) apart.When roughened, the die skin on the f
