1、Designation: C1272 14bStandard 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 parenthe
2、ses 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 apaving material in areas with a high volume of heavy vehiculartraffic. The units are designed for u
3、se in such places as streets,commercial driveways, and aircraft taxiways. These units arenot intended for applications covered by Specifications C410or C902.1.2 Units are manufactured from clay, shale, or similarnaturally occurring earthy substances and subjected to a heattreatment at elevated tempe
4、ratures (firing). The heat treatmentmust develop sufficient fired bond between the particulateconstituents to provide the strength and durability requirementsof this specification (see Terminology C1232).1.3 Brick may be shaped during manufacture by extruding,molding, or pressing. Brick may have spa
5、cing lugs, chamferededges, or both.1.4 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2C67 Tes
6、t Methods for Sampling and Testing Brick andStructural Clay TileC88 Test Method for Soundness of Aggregates by Use ofSodium Sulfate or Magnesium SulfateC410 Specification for Industrial Floor BrickC418 Test Method for Abrasion Resistance of Concrete bySandblastingC902 Specification for Pedestrian an
7、d Light Traffic PavingBrickC1232 Terminology of MasonryE303 Test Method for Measuring Surface Frictional Proper-ties Using the British Pendulum Tester3. Terminology3.1 DefinitionsTerms used in this specification are definedin Terminology C1232.3.2 Definitions of Terms Specific to This Standard:3.2.1
8、 heavy vehicular traffchigh volume of heavy ve-hicles representing trucks or combination vehicles having 3 ormore loaded axles.3.2.1.1 DiscussionHigh volume is considered to be trafficover 251 daily equivalent single axle loads (ESAL).4. Classification4.1 TypesHeavy vehicular paving brick are classi
9、fied bytype according to their intended installation:4.1.1 Type RBrick intended to be set in a mortar settingbed supported by an adequate concrete base; or an asphaltsetting bed supported by an adequate asphalt or concrete base.4.1.2 Type FBrick intended to be set in a sand setting bed,with sand joi
10、nts, and supported by an adequate base.4.2 ApplicationsHeavy vehicular paving brick are classi-fied by application according to their dimensional tolerances,warpage, and extent of chips.4.2.1 Application PSPavers intended for general use.4.2.2 Application PXPavers intended for use where ahigher degr
11、ee of precision and a lower permissible variation indimensional tolerances and warpage are required than forApplication PS.4.2.3 Application PAPavers intended to produce charac-teristic architectural effects resulting from nonuniformity insize, color, and texture.5. Physical Properties5.1 Freeze Tha
12、w ResistanceUse one of the followingmethods:5.1.1 Physical Property RequirementsThe brick shall con-form to the physical requirements for the type specified asprescribed in Table 1.5.1.2 Freezing and Thawing AlternativeThe 24-h coldwater absorption requirements specified in 5.1.1 shall not berequire
13、d provided a sample of five brick, meeting all otherrequirements, passes the 50 cycle freezing-and-thawing test in1This 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.
14、Current edition approved Dec. 15, 2014. Published December 2014. Originallyapproved in 1995. Last previous edition approved in 2014 as C1272 14a. DOI:10.1520/C1272-14B.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual
15、 Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Test Methods C
16、67 with not greater than 0.5 % loss in dryweight of any individual unit.NOTE 1The provisions of 5.1.2 are specified only as an alternativewhen 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 coldwa
17、ter absorption requirements specified in 5.1.1 shall not berequired if a representative sample of five brick survives 15cycles of the sulfate soundness test in accordance with Sections4, 5, and 8 of Test Method C88 with no visible damage.NOTE 2The sulfate soundness test is an optional substitute tes
18、t for thefreezing-and-thawing test (5.1.2).5.1.3 Performance AlternativeIf information on the per-formance over time of similar units in a similar applicationwith similar exposure and traffic is furnished by the manufac-turer or the manufacturers agent and is found acceptable to thespecifier of the
19、pavement material or the specifiers agent, thephysical requirements in 5.1.1 or the size requirements in 7.2shall not be required.5.2 Abrasion ResistanceEach individual brick tested shallmeet the requirements of either the Abrasion Index column orthe Volume Abrasion Loss column of Table 2.5.2.1 Abra
20、sion IndexThe abrasion index is calculatedfrom the 24-h cold water absorption in percent and thecompressive strength in pounds per square inch as follows:abrasion index 5100 3absorptioncompressive strength(1)5.2.1.1 The compressive strength shall be determined onhalf-brick, which are the full height
21、 (no less than 214 in. (57mm) and width of the unit, and with a length equal to one halfthe full length of the unit (614 in. (66 mm) for eachdimension). For abrasion index testing purposes, the brick shallbe without core holes, frogs or other perforations. Other shapedspecimens may be used provided
22、that a correlation is estab-lished with the results of the specified shape and the results areconverted to be equivalent to those that would be obtained withthe specified shape.5.2.1.2 In those cases where the height requirements fordetermining compressive strength cannot be met, the abrasionresista
23、nce should be determined according to the volumeabrasion loss method.5.2.2 Volume Abrasion LossThe volume abrasion lossshould be determined in accordance with Test Method C418,with the following changes in procedure:5.2.2.1 The sand shall be a natural silica sand from Ottawa,IL, graded to pass a No.
24、 50 (300-m) sieve and retained on aNo. 100 (150-m) sieve.5.2.2.2 The test 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 theabraded depression with modeling clay, striki
25、ng off level withthe original surface of the brick, and removing and weighingthe modeling clay. The volume loss shall be calculated from thebulk density of the modeling clay. The bulk density should bedetermined on each lot of modeling clay. An alternativemethod of determining the weight of clay use
26、d in filling thesandblast cavity is to determine the weight of the modelingclay sample before and after filling the cavity.5.3 Skid ResistanceWhen specified, the units shall betested for skid resistance in accordance with Test MethodE303.5.4 CoringThe brick shall be without core holes or otherperfor
27、ations.5.5 Chips or CracksThe brick shall be free of chips orcracks 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 efflores-cence in accordance with Test Methods C67. The un
28、its shall besampled at the place of manufacture.7. Dimensions and Permissible Variations7.1 The size of the brick shall be as specified by thepurchaser.7.2 The minimum specified thickness of the unit depends onthe Type and shall be as follows:7.2.1 Type R214 in. (57.2 mm).7.2.2 Type F258 in. (66.7 m
29、m).7.3 When chamfers are specified by the purchaser, thedimensions required in 7.2.2 are exclusive of chamfers.7.4 Lugs shall project no greater than18 in. (3.2 mm), unlessotherwise specified.NOTE 3Lugs are used as spacers to provide a definitive joint size.When used in permeable paving assemblies,
30、lugs may be required to belarger than18 in. (3.2 mm) to allow for additional water infiltration.TABLE 1 Physical RequirementsTypeMinimum 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
31、Avg. of 5 Brick IndividualR 8000 (55.2) 7000 (48.3) . . . . . . 6.0 7.0F 10 000 (69.0) 8800 (60.7) 475 (83) 333 (58) 6.0 7.0TABLE 2 Abrasion RequirementsAType Abrasion Index, max Volume Abrasion Loss,max, cm3/cm2R and F 0.11 1.7ASee 5.2.1 and 5.2.2 for additional information.C1272 14b27.4.1 When lug
32、s are specified by the purchaser, the size ofthe brick and its associated dimensional tolerances shallinclude the lugs.NOTE 4Some manufacturers have the option of making brick withlugs in different locations. When the pavers are placed such that the lugsare directly opposed to each other, the dimens
33、ion measurement shallinclude both lugs. When the pavers are placed in a manner where the lugsare offset, or when lugs are only on one side of the unit, the dimensionmeasurement shall include one lug only.7.5 In the sample of units, no unit shall depart from thespecified size by more than the individ
34、ual tolerance for theapplication specified as prescribed in Table 3. Type F pavingbrick shall conform to Application PX only.7.6 Tolerances for warpage of surfaces or edges intended tobe exposed in use from a plane surface and from a straight line,respectively, shall not exceed the maximum for the a
35、pplicationspecified as prescribed in Table 4. Type F paving brick shallconform to Application PX only.8. Finish and Appearance8.1 If brick having a particular color, color range, or textureare desired, these features shall be specified separately by thepurchaser. The texture of the finished face sha
36、ll conform to anapproved sample consisting of not less than four brick, eachrepresenting the texture desired. The color range shall beindicated by the approved sample.8.2 Other than chips, the finished faces of the brick shall befree of cracks or other imperfections detracting from theappearance of
37、a designated sample when viewed from adistance of 20 ft (6 m) under diffused lighting. If brick havinga particular color, color range, or texture are desired, thesefeatures shall be specified separately by the purchaser. Thetexture of the finished face shall conform to an approvedsample consisting o
38、f not less than four brick, each representingthe texture desired. The color range shall be indicated by theapproved sample.8.3 The finished faces of the brick shall be free of chips thatexceed the limits given in Table 5. The cumulative length ofchips on the finished face of a single unit shall not
39、exceed 10 %of the perimeter of that face.8.4 A delivery shall contain not more than 5 % brick that donot meet the combined requirements of Tables 3-5, includingbroken brick.8.5 After brick are placed in usage, the requirements forchippage and tolerances do not apply in determining compli-ance with t
40、his specification.9. Sampling and Testing9.1 The brick shall be sampled and tested in accordancewith applicable sections in Test Methods C67.9.2 The manufacturer or the seller shall furnish specimensfor tests. The place or places of selection shall be designatedwhen the purchase order is placed.NOTE
41、 5Unless otherwise specified in the purchase order, the cost oftests is typically borne as follows: If the results of the tests show that thebrick do not conform to the requirements of this specification, the cost istypically borne by the seller. If the results of the tests show that the brickdo con
42、form to the requirements of this specification, the cost is typicallyborne by the purchaser.10. Keywords10.1 brick; fired masonry units; pavement surfacesTABLE 3 Tolerances on DimensionsDimension, in. (mm) Permissible Variation, max, in. (mm)Application PS Application PX Application PA3 (76) and und
43、er18 (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)516 (7.9)732 (5.6) no limitTABLE 4 Tolerances on WarpageSpecified Dimension, in.(mm)Permissible Warpage, max, in. (mm)Application PS Application PX Application P
44、A8 (203) and under332 (2.4)116 (1.6) no limitOver 8 (203) to 12 (305)18 (3.2)332 (2.4) no limitOver 12 (305) to 16 (406)532 (4.0)18 (3.2) no limitTABLE 5 Maximum Permissible Extent of Chippage from Edgesand CornersApplication Chippage, in. (mm) in fromEdge CornerPS and PX516 (7.9)12 (12.7)PA no limi
45、t no limitC1272 14b3SUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue(C1272 14a) that may impact the use of this standard. (December 15, 2014)(1) Modified 7.3 so that the measurement of chamfers onlyapplies to Type F pavers.Committe
46、e C15 has identified the location of selected changes to this standard since the last issue(C1272 14) that may impact the use of this standard. (September 1, 2014)(1) Modified 8.2 and 8.3 to use the term “finished faces.”Committee C15 has identified the location of selected changes to this standard
47、since the last issue(C1272 11a) that may impact the use of this standard. (February 1, 2014)(1) References to cold water absorption within Section 5 wereidentified to reflect the appropriate time frame.(2) Subsection 7.3 and Note 3 was broken into two andreordered. The note was modified to emphasize
48、 the use of lugs.(3) Revised subsection 8.2 to include the words “under diffusedlighting.”ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination
49、of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theres
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