1、Designation: C126 15Standard 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 revision
2、, 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 specificatio
3、n covers structural clay load-bearingfacing tile and facing brick and other “solid masonry units”made from clay, shale, fire-clay, or mixtures thereof, with orwithout the addition of grog or other mixtures, having a finishconsisting of a ceramic glaze fused to the body at above1500F (655C) making th
4、em inseparable, excluding naturalsalt-glazed ware. Two grades, based on permissible variation inface dimensions, and two types are covered, as follows:1.1.1 Grade S (select), for use with comparatively narrowmortar joints.1.1.2 Grade SS (select sized or ground edge), for use wherevariation of face d
5、imension must be very small.1.1.3 Type I (single-faced units), for general use where onlyone finished face will be exposed.1.1.4 Type II (two-faced units), for use where two oppositefinished faces will be exposed.1.2 The property requirements of this specification apply atthe time of purchase. The u
6、se of results from testing of brickand tile extracted from masonry structures for determiningconformance or nonconformance to the property requirements(Section 5) of this standard is beyond the scope of thisspecification.1.3 Brick and tile covered by this specification are manu-factured from clay, s
7、hale, or similar naturally occurring sub-stances and subjected to a heat treatment at elevated tempera-tures (firing). The heat treatment must develop sufficient firedbond between the particulate constituents to provide thestrength requirements of this specification. (See firing and firedbond in Ter
8、minology C1232.)1.4 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of the standard.1.5 The values stated in inch-pound units are to be regardedas stand
9、ard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 The following precautionary caveat pertains only to thetest portion (Section 11.2) of this specification. This standarddoes not purport to address al
10、l of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sam
11、pling and Testing Brick andStructural Clay TileC1232 Terminology of MasonryE84 Test Method for Surface Burning Characteristics ofBuilding Materials2.2 National Fire Protection Association Standard:3NFPA No. 255 Test for Surface Burning Characteristics ofBuilding Materials2.3 Underwriters Laboratorie
12、s, Inc. Standard:4UL No. 723 Flammability Studies of Cellular Plastics andother Building Materials used for Interior Finishes2.4 International Conference of Building Offcials Stan-dard:5UBC No. 8-1 Test Method for Fire Hazard Classification ofBuilding Material1This specification is under the jurisdi
13、ction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.02 on Brick and Structural Clay Tile.Current edition approved March 1, 2015. Published March 2015. Originallyapproved in 1936. Last previous edition approved in 2014 as C126 14. DOI:10.1520/C
14、0126-15.2For 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.3Available from National Fire Protection Association
15、(NFPA), 1 BatterymarchPark, Quincy, MA 02169-7471, http:/www.nfpa.org.4Available from Underwriters Laboratories (UL), 333 Pfingsten Rd.,Northbrook, IL 60062-2096, http:/.5Available from the International Conference of Building Officials, 5360 S.Workman Mill Rd., Whittier, CA 90601.*A Summary of Chan
16、ges section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 DefinitionsFor definitions relating to ceramic glazedstructural clay facing tile, facing brick, and solid masonryunits, r
17、efer to Terminology C1232.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 GradeWhen the grade is not specified, the require-ments for Grade S shall govern.4.1.2 TypeWhen the type is not specified, the require-ments for Type I shall
18、 govern.4.1.3 Sizes and ShapesThe sizes and shapes shall bespecified in accordance with Section 6.1.4.1.4 Color and Texture of FinishThe color and texture ofthe finish shall be specified in accordance with Section 7.6.4.1.5 Back SurfacesUnless otherwise specified, smooth,scored, combed, or roughened
19、 unglazed backs and smoothunselected glazed backs or a mixture thereof, are furnished.When plaster is to be applied, the back surface shall bespecified in accordance with Section 7.5.4.1.6 CoringUnless otherwise specified, either standard orspecial duty units as prescribed in Section 10 are furnishe
20、d.4.1.7 OpacityWhere ceramic glazed units are not speci-fied as opaque, they need not meet the requirements for opacityprescribed in 7.4.2.4.1.8 Exterior UseWhere ceramic glazed units are re-quired for exterior use, the manufacturers shall be consulted formaterial suitable for this purpose.NOTE 1The
21、 requirements included in this specification do not coverminimum criteria for durability of units exposed to exterior environments.5. Physical Properties5.1 The compressive strengths (based on gross area) of theunits shall be not less than the values prescribed in Table 1.NOTE 2Special duty units ma
22、y be available from various manufac-turers where higher compressive strengths are required.6. Dimensions and Permissible Variations6.1 The face sizes of ceramic glazed units and fittingstherefore shall be as specified.NOTE 3The sizes shown in Table 2 are standard in the industry forsingle-faced unit
23、s (Type I).6.2 Face Dimension TolerancesThe total variation in thefinished face dimensions of units shall be not more than thevalues shown in Table 3.6.3 Bed-Depth Dimension TolerancesThe total variationin the bed-depth (through the wall) dimension of units shall benot more than the value shown in T
24、able 4.6.4 Warpage TolerancesThe maximum permissible devia-tion of the plane and the edges of the face of individual unitsfrom a plane surface and from a straight line, respectively, shallnot exceed the value shown in Table 5.NOTE 4When convex units are laid upon a plane surface, the apparentvariati
25、on is greater than the actual variation from the plane of the unit.7. Finish and Appearance7.1 The body of the units shall be free of cracks or otherimperfections which would impair the strength or durability ofthe masonry.7.2 Unless otherwise agreed upon between the purchaserand the seller, a deliv
26、ery of brick or tile shall not contain morethan 3 % brick or tile that are chipped, cracked or broken.7.3 The finished face (one face of stretcher units and thefinished faces of shapes) that will be exposed when in placeshall be covered with a ceramic glaze of uniform quality. Theglaze shall be free
27、 of chips, crazes, blisters, crawling, or otherimperfections detracting from the appearance of the finishedwall when viewed from a distance of 5 ft (1.52 m) underdiffused lighting at right angles from the wall.NOTE 5The purchaser or his authorized representative shall beaccorded opportunity for samp
28、ling and inspecting units at the place ofmanufacture, prior to shipment.At least 10 days from the time of samplingshould be allowed for completion of the tests. Unless otherwise specifiedin the purchase order, the cost of tests is typically borne as follows: If theresults of the tests show that the
29、brick does not conform to therequirements of this specification, the cost is typically borne by the seller.If the results of the tests show that the brick does conform to therequirements of this specification, the cost is typically borne by thepurchaser.7.4 Properties of Glaze:7.4.1 ImperviousnessAf
30、ter the imperviousness test, nostain seen from a distance of 5 ft (1.5 m) shall remain on orbeneath the surface, except a slight discoloration in thedepressions on matt, stippled, or mottled finishes.7.4.2 OpacityWhere opacity of finish is desired and sospecified, discoloration of the body shall not
31、 be visible throughthe glaze in the opacity test. Clear ceramic glazes and specialdecorative glazes shall not be required to meet this require-ment.7.4.3 Resistance to FadingThe color of the glaze shall notchange in the chemical resistance test. Finishes of metallic orspecial decorative glazes shall
32、 not be required to meet thisrequirement.7.4.4 Resistance to CrazingThe glaze shall not craze,spall, or crack when subjected to one cycle of autoclaving inthe crazing test.7.4.5 Flame Spread, Fuel Contribution and SmokeDensityBody and finish must withstand temperatures up to1900F (878C) without dist
33、ortion or melting and rate “non-combustible.” When tested in accordance with the provisionsof Test Method E84, structural facing tile shall measure 0 flamespread, 0 fuel contribution, and 0 smoke density. This testmethod is similar to that specified in NFPA No. 255, UL No.723, and UBC No. 8-1.7.4.6
34、Toxic FumesToxic fumes will not be released fromthe body or glaze finish at temperatures up to 1900F, andwhen tested under Test Method E84.TABLE 1 Compressive Strengths of UnitsDirection ofCoringMinimum Average of FiveTests, psi (MPa)Individual Minimum, psi(MPa)VerticalHorizontal3 000 (20.7)2 000 (1
35、3.8)2 500 (17.2)1 500 (10.3)C126 1527.4.7 Scratch Resistance and HardnessGlaze must resistscratching by ordinary glass or steel and be rated above five onthe Mohs Hardness Scale. Finishes of metallic or specialdecorative glazes shall not be required to meet this require-ment.7.5 Plaster Base Finish:
36、7.5.1 Unless otherwise specified by the purchaser, smooth,scored, combed or roughened-back units or a mixture thereofare furnished.7.5.2 When smooth, at least 90 % of the tile area shall befree of glaze and the average absorption shall be not less than5 %, unless acceptable plaster adhesion bond tes
37、t data isprovided.7.5.3 When scored, each groove shall be dovetailed andshall be not less than116 in. (1.6 mm) nor more than14 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 thearea of the scored faces.7.5.4 When combed, the
38、tile shall be scarified, prior toburning, by mechanical means which shall make scarificationson the surface of the tile not less than116 in. (1.6 mm) nor morethan18 in. (3.2 mm) in depth, and not more than14 in. (6.4mm) apart. When roughened, the die skin on the face of the tileshall be entirely bro
39、ken by mechanical means, such as wirecutting or wire brushing. (The die skin is visible within thecells of the tile.)7.6 The textures shall be mottled, stippled, or smooth asspecified and the color of the finished surface shall be indicatedby a sample consisting of not less than three stretcher unit
40、srepresenting the range of shades.8. Number of Cells8.1 Requirements for number of cells apply to hollow unitsonly. Cells are hollow spaces enclosed within the perimeter ofthe exterior shells having a minimum dimension of not lessthan12 in. (12.7 mm) and a cross-sectional area greater than112 in.2(9
41、.7 cm2). Hollow units of 6-in. (152.4 mm) and 8-in.(203.2 mm) thickness shall have not less than 2 cells or rowsof cells in the direction of wall thickness.TABLE 2 Size of Single-Faced UnitsSeriesDesignationSpecified Face DimensionsSpecified Thickness, in. (mm)Height, in. (mm) Length, in. (mm)4S 214
42、 (57.2) 758 (193.7) 134 ,358,558,or758 (44.5, 92.1, 142.9, or 193.7)4W 758 (193.7) 758 (193.7) 134 ,358,558,or758 (44.5, 92.1, 142.9, or 193.7)6P 358 (92.1) 1158 (295.3) 134 ,358,558,or758 (44.5, 92.1, 142.9, or 193.7)6T 5 (127) 111116 (296.9) 134 ,358,558,or758 (44.5, 92.1, 142.9, or 193.7)8W 758 (
43、193.7) 1558 (396.9) 134 ,358,558,or758 (44.5, 92.1, 142.9, or 193.7)TABLE 3 Permissible Variations in Face DimensionsNOTE 1Permissible variations for units having specified dimensionsmore than14 in. (6.4 mm) greater than shown in this table shall be thesame as for the next larger dimension.Specified
44、 FaceDimension, Return orReveal (Height,Length), in. (mm)Maximum DifferenceBetween Dimensionof Any Unit andthe Specified DimensionMaximum Differ-ence BetweenLargest and Small-est Unit in OneLot,Ain. (mm)If Larger,in. (mm)If Smaller,in. (mm)Grade S Units6 (152.4) and Under116 (1.6)332 (2.4)332 (2.4)O
45、ver 6 to 8(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 dimension116 (1.6)116 (1.6)18 (3.2)ASize of lot shall be determined by agreement between the purchaser and theseller.TABLE 4 Permissible Variat
46、ion in Bed Depth DimensionsNOTE 1Permissible variations for units having specified dimensionsmore than14 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. Th
47、e thickness 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 Sma
48、llestUnit in OneLot, in. (mm)AIf Larger,in. (mm)If Smaller,in. (mm)Type ISingle-Faced Units2 (50.8) and Under18 (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 IITwo-
49、Faced Units8 (203.2) and Under18 (3.2)18 (3.2)18 (3.2)ASize of lot shall be determined by agreement between the purchaser and theseller.TABLE 5 Permissible WarpageNOTE 1Warpage tolerances for units having specified dimensionsmore than14 in. (6.4 mm) greater than shown in this table shall be thesame as for the next larger dimension.Specified Face Dimensions(Height and Length),in. (mm)GradeMaximum PermissibleWarpage, in. (mm)214 758 (57.2 193.7) S116 (1.6)358 758
