1、Designation: C126 12Standard 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 Department of Defense.1. Scope*1.1 This specification cov
3、ers 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 them in
4、separable, 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 dimens
5、ion 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 use of
6、 results from testing of brickand tile extracted from masonry structures for determiningconformance or nonconformance to the property requirements(Section 4) of this standard is beyond the scope of thisspecification.1.3 Brick and tile covered by this specification are manu-factured from clay, shale,
7、 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 Terminol
8、ogy 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 standard.
9、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) of this specification. This standarddoes not purport to address all of th
10、e 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 Sampling a
11、nd 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 Laboratories, Inc.
12、 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 Material2.5 Government Standard:6Federal Standard Test
13、No. 1411This 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, 2012. Published July 2012. Originally approvedin 1936. Last previous editi
14、on approved in 2011 as C126 11. DOI: 10.1520/C0126-12.2For 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.3Availa
15、ble from National Fire Protection Association (NFPA), 1 BatterymarchPark, Quincy, MA 02169-7471, http:/www.nfpa.org.4Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., North-brook, IL 60062-2096, http:/.5Available from the International Conference of Building Officials, 5360 S.Workman
16、 Mill Rd., Whittier, CA 90601.6Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Con
17、shohocken, PA 19428-2959. United States13. Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 GradeWhen the grade is not specified, the require-ments for Grade S shall govern.3.1.2 TypeWhen the type is not specified, the require-ments fo
18、r Type I shall govern.3.1.3 Sizes and ShapesThe sizes and shapes shall bespecified in accordance with Section 5.1.3.1.4 Color and Texture of FinishThe color and texture ofthe finish shall be specified in accordance with Section 6.6.3.1.5 Back SurfacesUnless otherwise specified, smooth,scored, combed
19、, or roughened 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 6.5.3.1.6 CoringUnless otherwise specified, either standard orspecial duty units as prescribed in Section 9
20、 are furnished.3.1.7 OpacityWhere ceramic glazed units are not speci-fied as opaque, they need not meet the requirements for opacityprescribed in 6.4.2.3.1.8 Exterior Use Where ceramic glazed units are re-quired for exterior use, the manufacturers shall be consulted formaterial suitable for this pur
21、pose.NOTE 1The requirements included in this specification do not coverminimum criteria for durability of units exposed to exterior environments.4. Physical Properties4.1 The compressive strengths (based on gross area) of theunits shall be not less than the values prescribed in Table 1.5. Dimensions
22、 and Permissible Variations5.1 The face sizes of ceramic glazed units and fittingstherefore shall be as specified.NOTE 2The sizes shown in Table 2 are standard in the industry forsingle-faced units (Type I).5.2 Face Dimension TolerancesThe total variation in thefinished face dimensions of units shal
23、l be not more than thevalues shown in Table 3.5.3 Bed-Depth Dimension TolerancesThe total variationin the bed-depth (through the wall) dimension of units shall benot more than the value shown in Table 4.5.4 Warpage TolerancesThe maximum permissible devia-tion of the plane and the edges of the face o
24、f individual unitsfrom a plane surface and from a straight line, respectively, shallnot exceed the value shown in Table 5.6. Finish and Appearance6.1 The body of the units shall be free of cracks or otherimperfections which would impair the strength or durability ofthe masonry.6.2 Unless otherwise a
25、greed upon between the purchaserand the seller, a delivery of brick or tile shall not contain morethan 3 % brick or tile that are chipped, cracked or broken.6.3 The finished face (one face of stretcher units and thefinished faces of shapes) that will be exposed when in placeshall be covered with a c
26、eramic glaze of uniform quality. Theglaze shall be free 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) at rightangles from the wall.NOTE 3The purchaser or his authorized representative shall
27、beaccorded opportunity for sampling 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 theresu
28、lts of the tests show that the brick does not conform to theTABLE 1 Compressive Strengths of UnitsNOTE 1Special duty units are available from various manufacturerswhere higher compressive strengths are required.Direction ofCoringMinimum Average of FiveTests, psi (MPa)Individual Minimum, psi(MPa)Vert
29、icalHorizontal3 000 (20.7)2 000 (13.8)2 500 (17.2)1 500 (10.3)TABLE 2 Size of Single-Faced UnitsSeriesDesignationSpecified Face DimensionsSpecified Thickness, in. (mm)Height, in. (mm) Length, in. (mm)4S 214 (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)
30、 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 (193.7) 1558 (396.9) 134 ,358,558,or758 (44.5, 92.1, 142.9, or 193.7)TABLE 3 Permissible Variat
31、ions 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 Face Di-mension, Return orReveal (Height,Length), in. (mm)Maximum DifferenceBetween Dimension
32、of 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)Over 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
33、 (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.C126 122requirements of this specification, the cost is typically borne by the seller.If the results of the tests show
34、 that the brick does conform to therequirements of this specification, the cost is typically borne by thepurchaser.6.4 Glazed Finish:6.4.1 ImperviousnessAfter 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
35、 thedepressions on matt, stippled, or mottled finishes.6.4.2 OpacityWhere opacity of finish is desired and sospecified, discoloration of the body shall not be visible throughthe glaze in the opacity test. Clear ceramic glazes and specialdecorative glazes shall not be required to meet this require-me
36、nt.6.4.3 Resistance to FadingThe color of the glaze shall notchange in the chemical resistance test. Finishes of metallic orspecial decorative glazes shall not be required to meet thisrequirement.6.4.4 Resistance to CrazingThe glaze shall not craze,spall, or crack when subjected to one cycle of auto
37、claving inthe crazing test.6.4.5 Flame Spread, Fuel Contribution and SmokeDensityBody and finish must withstand temperatures up to1900F (878C) without distortion or melting and rate“ non-combustible.” When tested in accordance with the provisionsof Test Method E84, structural facing tile shall measu
38、re 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. 8-1.6.4.6 Toxic FumesToxic fumes will not be released fromthe body or glaze finish at temperatures up to 1900F, andwhen tested under Test Method E84.6.4.7
39、Hardness and Abrasion ResistanceGlaze must resistscratching by ordinary glass or steel and be rated above five onthe Mohs Hardness Scale. When tested for abrasion, underwear index method No. 6192 (Federal Standard Test No. 141),using a standard Taber Abraser Model CS-17 calibrase wheeland a 1000 g w
40、eight for 1000 wear cycles, the glazed face shallhave a wear factor not in excess of 15. Finishes of metallic orspecial decorative glazes shall not be required to meet thisrequirement.6.5 Plaster Base Finish:6.5.1 Unless otherwise specified by the purchaser, smooth,scored, combed or roughened-back u
41、nits or a mixture thereofare furnished.6.5.2 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 test data isprovided.6.5.3 When scored, each groove shall be dovetailed andshall be not less th
42、an116 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.6.5.4 When combed, the tile shall be scarified, prior toburning, by mechanical means which shall make scarification
43、son the surface of the tile not less than116 in. (1.6 mm) normore than18 in. (3.2 mm) in depth, and not more than14 in.(6.4 mm) apart. When roughened, the die skin on the face ofthe tile shall be entirely broken by mechanical means, such aswire cutting or wire brushing. (The die skin is visible with
44、inthe cells of the tile.)6.6 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 unitsrepresenting the range of shades.7. Number of Cells7.1 Requirements for number of cells app
45、ly 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(9.7 cm2). Hollow units of 6-in. (152.4 mm) and 8-in.(203.2 mm) thickness shall have not less
46、than 2 cells or rowsof cells in the direction of wall thickness.TABLE 4 Permissible Variation 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 2Var
47、iation in the bed depth of individual units is controlled bythe limitations on warpage. The 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 DifferenceBet
48、ween Dimensionof Any Unit andthe Specified DimensionMaximumDifferenceBetweenLargestand SmallestUnit 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.
49、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-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 1When convex units are laid upon a plane surface, the apparentvariation is greater than the actual variation from the plane of the unit.NOTE 2Warpage tolerances for units having specified dimensionsmore than14 in. (6.
