1、Designation: C 126 99 (Reapproved 2005)Standard Specification forCeramic Glazed Structural Clay Facing Tile, Facing Brick,and Solid Masonry Units1This standard is issued under the fixed designation C 126; the number immediately following the designation indicates the year oforiginal adoption or, in
2、the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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. Scope1.1 Th
3、is specification 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 (
4、655C) making them 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 wherevari
5、ation of face dimension 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
6、purchase. The use 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-factur
7、ed from clay, shale, 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 f
8、iredbond in Terminology C43.)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 following precautionary caveat pertains only to
9、 thetest portion (Section 16) of this specification. This standarddoes not purport to address all 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 regula
10、tory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2C43 Terminology of Structural Clay ProductsC67 Test Methods of Sampling and Testing Brick andStructural Clay TileE84 Test Method for Surface Burning Characteristics ofBuilding Materials2.2 National Fire Protection Association St
11、andard:3NFPA No. 255 Test for Surface Burning Characteristics ofBuilding Materials2.3 Underwriters Laboratories, 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
12、No. 8-1 Test Method for Fire Hazard Classification ofBuilding Material2.5 Government Standard:6Federal Standard Test No. 1413. 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
13、 Grade S shall govern.1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.02 on Clay Brick and Structural Clay Tile.Current edition approved May 15, 2005. Published June 2005. Originallyapproved in 1936.
14、 Last previous edition approved in 1999 as C 126 99.2For 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.3Availabl
15、e from the National Fire Protection Association, 1 Batterymarch Park,Quincy, MA 02169.4Available from Underwriters Laboratories, Inc., 333 Pfingsten Rd., Northbrook,IL 60062.5Available from the International Conference of Building Officials, 5360 S.Workman Mill Rd., Whittier, CA 90601.6Available fro
16、m Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.2 TypeWhen the type is not specified, the require-ments for Type
17、 I shall govern.3.1.3 Sizes and Shapes The sizes and shapes shall bespecified in accordance with Section 9.3.1.4 Color and Texture of FinishThe color and texture ofthe finish shall be specified in accordance with Section 8.3.1.5 Back Surfaces Unless otherwise specified, smooth,scored, combed, or rou
18、ghened 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 12.3.1.6 CoringUnless otherwise specified, either standardor special duty units as prescribed in Section 13 are fur
19、nished.3.1.7 OpacityWhere ceramic glazed units are not speci-fied as opaque, they need not meet the requirements for opacityprescribed in 7.2.3.1.8 Exterior Use Where ceramic glazed units are re-quired for exterior use, the manufacturers shall be consulted formaterial suitable for this purpose.NOTE
20、1The requirements included in this specification do not coverminimum criteria for durability of units exposed to exterior environments.4. Description of Units4.1 Units are multicored, hollow, or uncored, as follows:4.1.1 Solid Masonry Unit (multicored or uncored) is amasonry unit whose net cross-sec
21、tional area in every planeparallel to the bearing surface is 75 % or more of its grosscross-sectional area measured in the same plane.4.1.2 Hollow Masonry Unit is a masonry unit whose netcross-sectional area in any plane parallel to the bearing surfaceis less than 75 % of its gross cross-sectional a
22、rea measured inthe same plane.5. Compressive Strength5.1 The compressive strengths (based on gross area) of theunits shall be not less than the values prescribed in Table 1.6. Workmanship, Finish, and Appearance6.1 The body of the units shall be free of cracks or otherimperfections which would impai
23、r the strength or durability ofthe masonry.6.2 Unless otherwise agreed 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 sh
24、apes) that will be exposed when in placeshall be covered with a ceramic 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
25、 wall.NOTE 2The purchaser or his authorized representative shall 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 o
26、rder, the cost of tests is typically borne as follows: If theresults of the tests show that the 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 specifica
27、tion, the cost is typically borne by thepurchaser.7. Properties of Finish7.1 Imperviousness After 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.7.2 Op
28、acityWhere 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-ment.7.2.1 Resistance to FadingThe color of the glaze shall notch
29、ange in the chemical resistance test. Finishes of metallic orspecial decorative glazes shall not be required to meet thisrequirement.7.2.2 Resistance to CrazingThe glaze shall not craze,spall, or crack when subjected to one cycle of autoclaving inthe crazing test.7.2.3 Flame Spread, Fuel Contributio
30、n 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 measure 0flame spread, 0 fuel contribution, and 0 smoke density. Thi
31、stest method is similar to that specified in NFPA No. 255, ULNo. 723, and UBC No. 8-1.7.2.4 Toxic Fumes Toxic fumes will not be released fromthe body or glaze finish at temperatures up to 1900F, andwhen tested under Test Method E84.7.2.5 Hardness and Abrasion ResistanceGlaze must resistscratching by
32、 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 weight for 1000 wear cycles, the glazed face shallhave a wear f
33、actor not in excess of 15. Finishes of metallic orspecial decorative glazes shall not be required to meet thisrequirement.8. Color and Texture8.1 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
34、than three stretcher unitsrepresenting the range of shades.9. Sizes and Shapes9.1 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 units (Type I). Two-faced units (Type II) are standard in
35、 theTABLE 1 Compressive Strengths of UnitsNOTESpecial duty units are available from various manufacturerswhere higher compressive strengths are required.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 (1
36、0.3)C 126 99 (2005)2industry, in 334-in. (95.3-mm) and 534-in. (146-mm) thickness only.10. Number of Cells10.1 Requirements for number of cells apply to hollow unitsonly (see 4.1.2). Cells are hollow spaces enclosed within theperimeter of the exterior shells having a minimum dimensionof not less tha
37、n12 in. (12.7 mm) and a cross-sectional areagreater than 112 in.2(9.7 cm2). Hollow units of 6-in. (152.4mm) and 8-in. (203.2 mm) thickness shall have not less than 2cells or rows of cells in the direction of wall thickness.10.2 Double-shell tile shall be considered as having oneadditional cell in th
38、e direction of wall thickness if either:10.2.1 The combined width of the voids between exteriorand interior shells on both sides of the tile is not less than12in. (12.7 mm) and the combined thickness of the short websbetween inner and outer shells is not greater than that of thelong transverse webs
39、holding the inner shells, or10.2.2 The combined thickness of the inner and outer shellson each side of the tile is not less than 1 in. (25.4 mm).10.3 The face shells of single-shell tile with multicored orsolid-face shells at least 112 in. (38.1 mm) in thickness on bothsides of the tile shall be con
40、sidered as one additional cell inwall thickness, provided the volume of the cores in multicoredshells does not exceed 35 % of the gross volume of the faceshell and the minimum distance from perimeter of core toeither side of shell is not less than38 in. (9.5 mm).11. Shell and Web Thickness11.1 Multi
41、cored Units The minimum distance from theperimeter of core to the outer surface of the shell of multicoredunits shall be not less than34 in. (19 mm).11.2 The thickness of connecting webs between cores ofmulticored units, multicored shells, or supplementary cores ofhollow units, shall be not less tha
42、n14 in. (6.4 mm).11.3 Hollow Units The average overall thickness of theshells, measured between the inner and extreme outer surfacesof vertical-cell hollow units, shall be not less than34 in. (19mm). The thickness of the webs shall be not less than12 in.(12.7 mm).11.4 The average over-all thickness
43、of the side (face) shells,measured between the inner and extreme outer surfaces ofhorizontal-cell hollow units, shall be not less than34 in. (19mm). The net thickness of the top and bottom shells shall benot less than12 in. (12.7 mm); that is, when the top andbottom shells are scored, the over-all t
44、hickness of the top andbottom shells shall be not less than12 in. plus the depth of thegrooves. The thickness of the webs shall be not less than12in.11.5 The horizontal width of any cell in horizontal-cellhollow units shall not exceed 412 times the average over-allthickness of either the upper or lo
45、wer bearing shell.12. Tolerances on Dimensions12.1 Face Dimension TolerancesThe total variation in thefinished face dimensions of units shall be not more than theamounts shown in Table 3.12.2 Bed-Depth Dimension TolerancesThe total variationin the bed-depth (through the wall) dimension of units shal
46、l benot more than the amount shown in Table 4.12.3 Distortion TolerancesThe maximum permissible de-viation of the plane and the edges of the face of individual unitsfrom a plane surface and from a straight line, respectively, shallnot exceed the amount shown in Table 5.13. Plaster Base Finish13.1 Un
47、less otherwise specified by the purchaser, smooth,scored, combed or roughened-back units or a mixture thereofare furnished.13.2 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 is
48、provided.TABLE 2 Size of Single-Faced UnitsSeriesDesignationSpecified Face DimensionsSpecified Thickness, in. (mm)Height, in. (mm) Length, in. (mm)4S 238 (60.3) 734 (196.9) 134 or 334 (44.5 or 95.3)4D 5116 (128.6) 734 (196.9) 134 ,334 ,534 ,or734 (44.5, 95.3, 146.1, 196.9)6P 334 (95.3) 1134 (298.5)
49、134 ,334 ,534 ,or734 (44.5, 95.3, 146.1, 196.9)6T 5116 (128.6) 1134 (298.5) 134 ,334 ,534 ,or734 (44.5, 95.3, 146.1, 196.9)6M 534 (146.1) 1134 (298.5) 134 ,334 ,534 ,or734 (44.5, 95.3, 146.1, 196.9)8W 734 (196.9) 1534 (400.1) 134 or 334 (44.5 or 95.3)TABLE 3 Permissible Variations in Face DimensionsNOTE 1Permissible variations for units having dimensions more than14 in. (6.4 mm) greater than shown in this table shall be the same as forthe next larger dimension.NOTE 2Other sizes are available conforming t
