1、Designation: C126 12 C126 12aStandard 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
2、 revision, 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 specific
3、ation 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) ma
4、king 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 variation
5、 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 pu
6、rchase. The use of results from testing of brick andtile extracted from masonry structures for determining conformance or nonconformance to the property requirements (Section 4)of this standard is beyond the scope of this specification.1.3 Brick and tile covered by this specification are manufacture
7、d 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 fire
8、d bond in Terminology 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 r
9、egarded 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 1110.2) 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 and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C
11、67 Test Methods for Sampling and Testing Brick and Structural Clay TileC1232 Terminology of MasonryE84 Test Method for Surface Burning Characteristics of Building Materials2.2 National Fire Protection Association Standard:3NFPA No. 255 Test for Surface Burning Characteristics of Building Materials2.
12、3 Underwriters Laboratories, Inc. Standard:4UL No. 723 Flammability Studies of Cellular Plastics and other Building Materials used for Interior Finishes1 This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee
13、C15.02 on Brickand Structural Clay Tile.Current edition approved June 1, 2012Dec. 1, 2012. Published July 2012 December 2012. Originally approved in 1936. Last previous edition approved in 20112012 asC126 11.C126 12. DOI: 10.1520/C0126-12.10.1520/C0126-12A.2 For referenced ASTM standards, visit the
14、ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7
15、471, http:/www.nfpa.org.4 Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096, http:/.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. Becau
16、seit may not be technically possible to adequately 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 appear
17、s at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.4 International Conference of Building Offcials Standard:5UBC No. 8-1 Test Method for Fire Hazard Classification of Building Material2.5 Government Standar
18、d:6Federal Standard Test No. 1413. Ordering Information3.1 Orders for material under this specification shall include the following information:3.1.1 GradeWhen the grade is not specified, the requirements for Grade S shall govern.3.1.2 TypeWhen the type is not specified, the requirements for Type I
19、shall govern.3.1.3 Sizes and ShapesThe sizes and shapes shall be specified in accordance with Section 5.1.3.1.4 Color and Texture of FinishThe color and texture of the finish shall be specified in accordance with Section 6.6.3.1.5 Back SurfacesUnless otherwise specified, smooth, scored, combed, or r
20、oughened unglazed backs and smooth unselectedglazed backs or a mixture thereof, are furnished. When plaster is to be applied, the back surface shall be specified in accordancewith Section 6.5.3.1.6 CoringUnless otherwise specified, either standard or special duty units as prescribed in Section 9 are
21、 furnished.3.1.7 OpacityWhere ceramic glazed units are not specified as opaque, they need not meet the requirements for opacityprescribed in 6.4.2.3.1.8 Exterior Use Where ceramic glazed units are required for exterior use, the manufacturers shall be consulted for materialsuitable for this purpose.N
22、OTE 1The requirements included in this specification do not cover minimum criteria for durability of units exposed to exterior environments.4. Physical Properties4.1 The compressive strengths (based on gross area) of the units shall be not less than the values prescribed in Table 1.NOTE 2Special dut
23、y units may be available from various manufacturers where higher compressive strengths are required.5. Dimensions and Permissible Variations5.1 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
24、-faced units (Type I).5.2 Face Dimension TolerancesThe total variation in the finished face dimensions of units shall be not more than the valuesshown in Table 3.5.3 Bed-Depth Dimension TolerancesThe total variation in the bed-depth (through the wall) dimension of units shall be notmore than the val
25、ue shown in Table 4.5.4 Warpage TolerancesThe maximum permissible deviation of the plane and the 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 ap
26、parent variation is greater than the actual variation from the plane of the unit.6. Finish and Appearance6.1 The body of the units shall be free of cracks or other imperfections which would impair the strength or durability of themasonry.6.2 Unless otherwise agreed upon between the purchaser and the
27、 seller, a delivery of brick or tile shall not contain more than3 % brick or tile that are chipped, cracked or broken.6.3 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 glaze of uniform quality. The g
28、laze 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) at right angles from the wall.5 Available from the International Conference of Building Officials, 5360 S. Workman Mill Rd.,
29、 Whittier, CA 90601.6 Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.TABLE 1 Compressive Strengths of UnitsNOTE 1Special duty units are available from various manufacturerswhere higher compressive strengths are requi
30、red.Direction ofCoringMinimum 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 12a2NOTE 5The purchaser or his authorized representative shall be accorded opportunity for sampling and inspecting units at the place of man
31、ufacture,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 as follows: If the results of the tests show that the brick does not conform to the requirements
32、 of this specification,the 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, the cost istypically borne by the purchaser.6.4 Glazed Finish: Properties of Glaze:TABLE 2 Size of Single-Faced UnitsSeriesDesigna
33、tionSpecified Face Dimensions Specified Thickness, in. (mm)Height, in. (mm) Length, in. (mm)4S 214 (57.2) 758 (193.7) 134 , 358, 558, or 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 (
34、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) 134 , 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 dimension
35、smore than 14 in. (6.4 mm) greater than shown in this table shall be thesame as for the next larger dimension.Specified FaceDimension, Return orReveal (Height,Length), in. (mm)Maximum DifferenceBetween Dimensionof Any Unit andthe Specified DimensionMaximum Differ-ence BetweenLargest and Small-est Un
36、it 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(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 (
37、1.6) 116 (1.6) 18 (3.2)A Size of lot shall be determined by agreement between the purchaser and theseller.TABLE 4 Permissible Variation 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
38、 as for the next larger dimension.NOTE 2Variation 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 (Wa
39、llThickness), in. (mm)Maximum DifferenceBetween 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 Under 18 (3.2) 18 (3.2) 18 (3.2)Over 2 to 4(50.8 to 101.6)18 (3
40、.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-Faced Units8 (203.2) and Under 18 (3.2) 18 (3.2) 18 (3.2)A Size of lot shall be determined by agreement between the purchaser and theseller.C126 12a36.4.1 Imp
41、erviousnessAfter 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.6.4.2 OpacityWhere opacity of finish is desired and so specified, discoloration of th
42、e 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.6.4.3 Resistance to FadingThe color of the glaze shall not change in the chemical resistance test. Finishes of metallic orspecial decora
43、tive glazes shall not be required to meet this requirement.6.4.4 Resistance to CrazingThe glaze shall not craze, spall, or crack when subjected to one cycle of autoclaving in the crazingtest.6.4.5 Flame Spread, Fuel Contribution and Smoke DensityBody and finish must withstand temperatures up to 1900
44、F (878C)without distortion or melting and rate“ noncombustible.” When tested in accordance with the provisions of Test Method E84,structural facing tile shall measure 0 flame spread, 0 fuel contribution, and 0 smoke density. This test method is similar to thatspecified in NFPA No. 255, UL No. 723, a
45、nd UBC No. 8-1.6.4.6 Toxic FumesToxic fumes will not be released from the body or glaze finish at temperatures up to 1900F, and whentested under Test Method E84.6.4.7 Hardness and Abrasion ResistanceGlaze must resist scratching by ordinary glass or steel and be rated above five on theMohs Hardness S
46、cale. When tested for abrasion, under wear index method No. 6192 (Federal Standard Test No. 141), using astandard Taber Abraser Model CS-17 calibrase wheel and a 1000 g weight for 1000 wear cycles, the glazed face shall have a wearfactor not in excess of 15. Finishes of metallic or special decorativ
47、e glazes shall not be required to meet this requirement.6.5 Plaster Base Finish:6.5.1 Unless otherwise specified by the purchaser, smooth, scored, combed or roughened-back units or a mixture thereof arefurnished.6.5.2 When smooth, at least 90 % of the tile area shall be free of glaze and the average
48、 absorption shall be not less than 5 %,unless acceptable plaster adhesion bond test data is provided.6.5.3 When scored, each groove shall be dovetailed and shall be not less than 116 in. (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 t
49、he grooves shall not exceed 50 % of the area of thescored faces.6.5.4 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 face of the tile shall be entirely broken by mechanical means, such as wire cutting or wirebrushing. (The die skin is
