1、Designation: C1272 11aC1272 14Standard Specification forHeavy Vehicular Paving Brick1This standard is issued under the fixed designation C1272; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers brick intended for use as a paving material in areas with a high volume of heavy vehicular traffic.The units are desig
3、ned for use in such places as streets, commercial driveways, and aircraft taxiways. These units are not intendedfor applications covered by Specifications C410 or C902.1.2 Units are manufactured from clay, shale, or similar naturally occurring earthy substances and subjected to a heat treatmentat el
4、evated temperatures (firing). The heat treatment must develop sufficient fired bond between the particulate constituents toprovide the strength and durability requirements of this specification (see Terminology C1232).1.3 Brick may be shaped during manufacture by extruding, molding, or pressing. Bri
5、ck may have spacing lugs, chamferededges, or both.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM S
6、tandards:2C67 Test Methods for Sampling and Testing Brick and Structural Clay TileC88 Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium SulfateC410 Specification for Industrial Floor BrickC418 Test Method for Abrasion Resistance of Concrete by SandblastingC902 Specificati
7、on for Pedestrian and Light Traffic Paving BrickC1232 Terminology of MasonryE303 Test Method for Measuring Surface Frictional Properties Using the British Pendulum Tester3. Terminology3.1 DefinitionsTerms used in this specification are defined in Terminology C1232.3.2 Definitions of Terms Specific t
8、o This Standard:3.2.1 heavy vehicular traffchigh volume of heavy vehicles representing trucks or combination vehicles having 3 or moreloaded axles.3.2.1.1 DiscussionHigh volume is considered to be traffic over 251 daily equivalent single axle loads (ESAL).4. Classification4.1 TypesHeavy vehicular pa
9、ving brick are classified by type according to their intended installation:4.1.1 Type RBrick intended to be set in a mortar setting bed supported by an adequate concrete base; or an asphalt setting bedsupported by an adequate asphalt or concrete base.4.1.2 Type FBrick intended to be set in a sand se
10、tting bed, with sand joints, and supported by an adequate base.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 Dec. 1, 2011Feb. 1, 2014
11、. Published December 2011February 2014. Originally approved in 1995. Last previous edition approved in 2011 asC1272 11.C1272 11a. DOI: 10.1520/C1272-11a.10.1520/C1272-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annua
12、l Book of ASTM Standardsvolume information, 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 t
13、echnically 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 appears at the end of t
14、his standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2 ApplicationsHeavy vehicular paving brick are classified by application according to their dimensional tolerances,warpage, and extent of chips.4.2.1 Application PSPavers i
15、ntended for general use.4.2.2 Application PXPavers intended for use where a higher degree of precision and a lower permissible variation indimensional tolerances and warpage are required than for Application PS.4.2.3 Application PAPavers intended to produce characteristic architectural effects resul
16、ting from nonuniformity in size, color,and texture.5. Physical Properties5.1 Freeze Thaw ResistanceUse one of the following methods:5.1.1 Physical Property RequirementsThe brick shall conform to the physical requirements for the type specified as prescribedin Table 1.5.1.2 Freezing and Thawing Alter
17、nativeThe 24-h cold water absorption requirements specified in 5.1.1 shall not be requiredprovided a sample of five brick, meeting all other requirements, passes the 50 cycle freezing-and-thawing test in Test Methods C67with not greater than 0.5 % loss in dry weight of any individual unit.NOTE 1The
18、provisions of 5.1.2 are specified only as an alternative when the sample does not conform to the requirements 24-h for cold waterabsorption prescribed in Table 1.5.1.2.1 Sulfate Soundness Test AlternativeThe 24-h cold water absorption requirements specified in 5.1.1 shall not be requiredif a represe
19、ntative sample of five brick survives 15 cycles of the sulfate soundness test in accordance with Sections 4, 5, and 8 ofTest Method C88 with no visible damage.NOTE 2The sulfate soundness test is an optional substitute test for the freezing-and-thawing test (5.1.2).5.1.3 Performance AlternativeIf inf
20、ormation on the performance over time of similar units in a similar application withsimilar exposure and traffic is furnished by the manufacturer or the manufacturers agent and is found acceptable to the specifierof the pavement material or the specifiers agent, the physical requirements in 5.1.1 or
21、 the size requirements in 7.2 shall not berequired.5.2 Abrasion ResistanceEach individual brick tested shall meet the requirements of either the Abrasion Index column or theVolume Abrasion Loss column of Table 2.5.2.1 Abrasion IndexThe abrasion index is calculated from the 24-h cold water absorption
22、 in percent and the compressivestrength in pounds per square inch as follows:abrasion index5 1003absorptioncompressive strength (1)5.2.1.1 The compressive strength shall be determined on half-brick, which are the full height (no less than 214 in. (57 mm) andwidth of the unit, and with a length equal
23、 to one half the full length of the unit (614 in. (66 mm) for each dimension). For abrasionindex testing purposes, the brick shall be without core holes, frogs or other perforations. Other shaped specimens may be usedprovided that a correlation is established with the results of the specified shape
24、and the results are converted to be equivalent tothose that would be obtained with the specified shape.5.2.1.2 In those cases where the height requirements for determining compressive strength cannot be met, the abrasionresistance should be determined according to the volume abrasion loss method.5.2
25、.2 Volume Abrasion LossThe volume abrasion loss should be determined in accordance with Test Method C418, with thefollowing changes in procedure:5.2.2.1 The sand shall be a natural silica sand from Ottawa, IL, graded to pass a No. 50 (300-m) sieve and retained on a No.100 (150-m) sieve.5.2.2.2 The t
26、est shall be run on dry brick.5.2.2.3 The duration of the test shall be 2 min.5.2.2.4 The rate of sand flow shall be 400 g/min.5.2.2.5 The volume loss shall be determined by filling the abraded depression with modeling clay, striking off level with theoriginal surface of the brick, and removing and
27、weighing the modeling clay. The volume loss shall be calculated from the bulkTABLE 1 Physical RequirementsType Minimum Compressive Strength, GrossArea, psi (MPa) Minimum Breaking Load,lb/in. (kN/mm) Maximum Cold WaterAbsorption, %Avg. of 5 Brick Individual Avg. of 5 Brick Individual Avg. of 5 Brick
28、IndividualR 8000 (55.2) 7000 (48.3) . . . . . . 6.0 7.0F 10 000 (69.0) 8800 (60.7) 475 (83) 333 (58) 6.0 7.0C1272 142density of the modeling clay. The bulk density should be determined on each lot of modeling clay. An alternative method ofdetermining the weight of clay used in filling the sandblast
29、cavity is to determine the weight of the modeling clay sample beforeand after filling the cavity.5.3 Skid ResistanceWhen specified, the units shall be tested for skid resistance in accordance with Test Method E303.5.4 CoringThe brick shall be without core holes or other perforations.5.5 Chips or Cra
30、cksThe brick shall be free of chips or cracks larger than those listed in this specification that wouldsignificantly impair the performance of the system.6. Efflorescence6.1 When specified, the units shall be tested for efflorescence in accordance with Test Methods C67. The units shall be sampledat
31、the place of manufacture.7. Dimensions and Permissible Variations7.1 The size of the brick shall be as specified by the purchaser.7.2 The minimum specified thickness of the unit depends on the Type and shall be as follows:7.2.1 Type R214 in. (57.2 mm).7.2.2 Type F258 in. (66.7 mm).7.3 ChamfersWhen u
32、nits with chamfers are specified by the purchaser, the dimensions required in 7.2 are exclusive ofchamfers.7.4 LugsWhen units with lugs are specified byLugs shall project no greater than 18 the purchaser, the size of the brick andits associated dimensional tolerances shall include the lugs.in. (3.2
33、mm), unless otherwise specified.NOTE 3Lugs are used as spacers to provide a definitive joint size. When used in permeable paving assemblies, lugs may be required to be larger than18 in. (3.2 mm) to allow for additional water infiltration.7.4.1 Lugs on units used in segmental paving applications shal
34、l not exceed When lugs 18 in. (3.2 mm), unless otherwisespecified. Lugs on units designed for use in permeable unit paving systems are permitted to exceed this value to achieve requiredwater infiltration.are specified by the purchaser, the size of the brick and its associated dimensional tolerances
35、shall include thelugs.NOTE 4Some manufacturers have the option of making brick with lugs in different locations. When the pavers are placed such that the lugs aredirectly opposed to each other, the dimension measurement shall include both lugs. When the pavers are placed in a manner where the lugs a
36、re offset,or when lugs are only on one side of the unit, the dimension measurement shall include one lug only.NOTE 3Lugs are used as spacers when units are placed in usage. Manufacturers have the option of making brick with lugs in different locations. Whenthe pavers are placed such that the lugs ar
37、e directly opposed to each other, the dimension measurement shall include both lugs. When the pavers are placedin a manner where the lugs are offset, or when lugs are only on one side of the unit, the dimension measurement shall include one lug only.7.5 In the sample of units, no unit shall depart f
38、rom the specified size by more than the individual tolerance for the applicationspecified as prescribed in Table 3. Type F paving brick shall conform to Application PX only.7.6 Tolerances for warpage of surfaces or edges intended to be exposed in use from a plane surface and from a straight line,res
39、pectively, shall not exceed the maximum for the application specified as prescribed in Table 4. Type F paving brick shallconform to Application PX only.TABLE 2 Abrasion RequirementsAType Abrasion Index, max Volume Abrasion Loss,max, cm3/cm 2R and F 0.11 1.7A See 5.2.1 and 5.2.2 for additional inform
40、ation.TABLE 3 Tolerances on DimensionsDimension, in. (mm) Permissible Variation, max, in. (mm)Application PS Application PX Application PA3 (76) and under 18 (3.2) 116 (1.6) no limitOver 3 to 5 (76 to 127) 316 (4.7) 332 (2.4) no limitOver 5 to 8 (127 to 203) 14 (6.4) 18 (3.2) no limitOver 8 (203) 51
41、6 (7.9) 732 (5.6) no limitC1272 1438. Finish and Appearance8.1 If brick having a particular color, color range, or texture are desired, these features shall be specified separately by thepurchaser. The texture of the finished face shall conform to an approved sample consisting of not less than four
42、brick, eachrepresenting the texture desired. The color range shall be indicated by the approved sample.8.2 Other than chips, the brick shall be free of cracks or other imperfections detracting from the appearance of a designatedsample when viewed from a distance of 20 ft (6 m). m) under diffused lig
43、hting. If brick having a particular color, color range, ortexture are desired, these features shall be specified separately by the purchaser. The texture of the finished face shall conform toan approved sample consisting of not less than four brick, each representing the texture desired. The color r
44、ange shall be indicatedby the approved sample.8.3 The parts of the brick that will be exposed in place shall be free of chips that exceed the limits given in Table 5. Thecumulative length of chips on the exposed face of a single unit shall not exceed 10 % of the perimeter of the exposed face of theb
45、rick.8.4 A delivery shall contain not more than 5 % brick that do not meet the combined requirements of Tables 3-5, includingbroken brick.8.5 After brick are placed in usage, the requirements for chippage and tolerances do not apply in determining compliance withthis specification.9. Sampling and Te
46、sting9.1 The brick shall be sampled and tested in accordance with applicable sections in Test Methods C67.9.2 The manufacturer or the seller shall furnish specimens for tests. The place or places of selection shall be designated whenthe purchase order is placed.NOTE 5Unless otherwise specified in th
47、e purchase order, the cost of tests is typically borne as follows: If the results of the tests show that the brickdo not conform to the requirements of this specification, the cost is typically borne by the seller. If the results of the tests show that the brick do conformto the requirements of this
48、 specification, the cost is typically borne by the purchaser.10. Keywords10.1 brick; fired masonry units; pavement surfacesSUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue(C1272 11C1272 11a) that may impact the use of this standard
49、. (Approved(February Dec. 1, 2011.)1, 2014)(1) Select sections within the standardReferences to cold water absorption within Section 5 were renamed in accordance with theASTM Form and Style Standards manual.identified to reflect the appropriate time frame.(2) The description of Application PX in 4.2.2 was revised to relate to Application PS.(2) Subsection 7.3 and Note 3 was divided into sections on chamfers and lugs; larger lugs in permeable paving systems werepermitted. broken into two and reordered. The note was modif
