1、Designation: C 1272 07Standard Specification forHeavy Vehicular Paving Brick1This standard is issued under the fixed designation C 1272; 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 parenth
2、eses indicates the year of last reapproval. Asuperscript epsilon (e) 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
3、 use in such places as streets,commercial driveways, and aircraft taxiways. These units arenot intended for applications covered by Specifications C 410or C 902.1.2 Units are manufactured from clay, shale, or similarnaturally occurring earthy substances and subjected to a heattreatment at elevated t
4、emperatures (firing). The heat treatmentmust develop sufficient fired bond between the particulateconstituents to provide the strength and durability requirementsof this specification (see firing, fired bond, and incipient fusionin Terminology C43).1.3 Brick may be shaped during manufacture by extru
5、ding,molding, or pressing. Brick may have spacing lugs, chamferededges, or both.1.4 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.2. Referenced Documents2.1 ASTM Standards:2C43 Terminology of Structural Clay ProductsC
6、67 Test Methods for Sampling and Testing Brick andStructural Clay TileC88 Test Method for Soundness of Aggregates by Use ofSodium Sulfate or Magnesium SulfateC 410 Specification for Industrial Floor BrickC 418 Test Method for Abrasion Resistance of Concrete bySandblastingC 902 Specification for Pede
7、strian and Light Traffic PavingBrickE 303 Test Method for Measuring Surface Frictional Prop-erties Using the British Pendulum Tester3. Terminology3.1 DefinitionsTerms used in this specification are definedin Terminology C43.3.2 Definitions of Terms Specific to This Standard:3.2.1 heavy vehicular tra
8、ffchigh 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 classified bytype accordin
9、g 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 joints, and supported b
10、y an adequate base.4.2 ApplicationsHeavy vehicular paving brick are classi-fied by application according to their dimensional tolerances,distortion, and extent of chips.4.2.1 Application PSPavers intended for general use.4.2.2 Application PXPavers intended for use where di-mensional tolerances, warp
11、age, and chippage are limited.4.2.3 Application PAPavers intended to produce charac-teristic architectural effects resulting from nonuniformity insize, color, and texture.5. Physical Properties5.1 Freeze Thaw ResistanceUse one of the followingmethods:5.1.1 Physical Property RequirementsThe brick sha
12、llconform to the physical requirements for the type specified asprescribed in Table 1.5.1.2 Freezing and Thawing AlternativeThe cold waterabsorption 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-t
13、hawing test in Test MethodsC67with not greater than 0.5 % loss in dry weight of anyindividual unit.1This 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
14、 approved June 1, 2007. Published June 2007. Originallyapproved in 1995. Last previous edition approved in 2005 as C 1272 05a.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,
15、 refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 1The provisions of 5.1.2 are specified only as an
16、 alternativewhen the sample does not conform to the requirements for cold waterabsorption prescribed in Table 1.5.1.2.1 Sulfate Soundness Test AlternativeThe cold waterabsorption requirements specified in 5.1.1 shall not be requiredif a representative sample of five brick survives 15 cycles of thesu
17、lfate soundness test in accordance with Sections 4, 5, and 8of Test Method C88with no visible damage.NOTE 2The sulfate soundness test is an optional substitute test for thefreezing-and-thawing test (5.1.2).5.1.3 Performance AlternativeIf information on the per-formance over time of similar units in
18、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 pavement material or the specifiers agent, thephysical requirements in 5.1.1 or the size requirements in 7.2shall not be required.5.2 Abr
19、asion ResistanceEach individual brick tested shallmeet the requirements of either the Abrasion Index column orthe Volume Abrasion Loss column of Table 2.5.2.1 Abrasion IndexThe abrasion index is calculatedfrom the cold absorption in percent and the compressivestrength in pounds per square inch as fo
20、llows:abrasion index 5100 3 absorptioncompressive strength(1)5.2.1.1 The compressive strength shall be determined onhalf-brick, which are the full height (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 eachdimens
21、ion). For abrasion index testing purposes, the brick shallbe without core holes, frogs or other perforations. Other shapedspecimens may be used provided 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 obt
22、ained withthe specified shape.5.2.1.2 In those cases where the height requirements fordetermining compressive strength cannot be met, the abrasionresistance should be determined according to the volumeabrasion loss method.5.2.2 Volume Abrasion LossThe volume abrasion lossshould be determined in acco
23、rdance with Test Method C 418,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. 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 mi
24、n.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, striking off level withthe original surface of the brick, and removing and weighingthe modeling clay. The volume loss shall be calculated from thebulk d
25、ensity of the modeling clay. The bulk density should bedetermined on each lot of modeling clay. An alternativemethod of determining the weight of clay used in filling thesandblast cavity is to determine the weight of the modelingclay sample before and after filling the cavity.5.3 Skid ResistanceWhen
26、 specified, the units shall betested for skid resistance in accordance with Test MethodE 303.5.4 CoringThe brick shall be without core holes or otherperforations.5.5 Chips or CracksThe brick shall be free of chips orcracks larger than those listed in this specification that wouldsignificantly impair
27、 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 units shall besampled at the place of manufacture.7. Size and Tolerances7.1 The size of the brick shall be as specified by thepurchaser.7.2 The min
28、imum 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 mm).7.3 When chamfers are specified by the purchaser, thedimensions required in 7.2 are exclusive of chamfers. Whenlugs are specified by the purchaser, the size of
29、the brick and itsassociated dimensional tolerances shall include the lugs. Thelugs shall project no greater than18 in. (3.2 mm), unlessotherwise specified.NOTE 3Lugs are used as spacers when units are placed in usage.Manufacturers have the option of making brick with lugs in differentlocations. When
30、 the pavers are placed such that the lugs are directlyopposed to each other, the dimension measurement shall include bothlugs. When the pavers are placed in a manner where the lugs are offset, orwhen lugs are only on one side of the unit, the dimension measurementshall include one lug only.7.4 In th
31、e sample of units, no unit shall depart from thespecified size by more than the individual tolerance for theapplication specified as prescribed in Table 3. Type F pavingbrick shall conform to Application PX only.7.5 Tolerances for distortion or warpage of surfaces oredges intended to be exposed in u
32、se from a plane surface andTABLE 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 Avg. of 5 Brick IndividualR 8000 (55.2) 7000 (48.3) . . . . . . 6.0 7
33、.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.C1272072from a straight line, respectively, shall not exceed the maxi-mum for the application
34、 specified as prescribed in Table 4.Type F paving brick shall conform to Application PX only.8. Visual Inspection8.1 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 shall conform to
35、 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 brick shall be free of cracks orother imperfections detracting from the appearance of a des-ignated sample when viewed f
36、rom a distance of 20 ft (6 m). Ifbrick having a particular color, color range, or texture aredesired, these features shall be specified separately by thepurchaser. The texture of the finished face shall conform to anapproved sample consisting of not less than four brick, eachrepresenting the texture
37、 desired. The color range shall beindicated by the approved sample.8.3 The parts of the brick that will be exposed in place shallbe free of chips that exceed the limits given in Table 5. Thecumulative length of chips on the exposed face of a single unitshall not exceed 10 % of the perimeter of the e
38、xposed face ofthe brick.8.4 Unless otherwise agreed upon in writing by the pur-chaser and the seller, a delivery shall contain not more than5 % brick that do not meet the combined requirements ofTables 3-5, including broken brick.9. Sampling and Testing9.1 The brick shall be sampled and tested in ac
39、cordancewith applicable sections in Test Methods C 67.9.2 The manufacturer or the seller shall furnish specimensfor tests. The place or places of selection shall be designatedwhen the purchase order is placed.NOTE 4Unless otherwise specified in the purchase order, the cost oftests is typically borne
40、 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 conform to the requirements of this specification, the cost is typicallyborne by the purch
41、aser.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(C 1272 05a) that may impact the use of this standard. (Approved June 1, 2007.)(1) The title of Section 7 was change
42、d from Dimensions andPermissible Variations to Size and Tolerances.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 of the validity of any
43、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 inv
44、ited 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 theresponsible technical committee, which you may attend. If you feel that your comments have not received
45、 a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of th
46、is standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 3 Tolerances on DimensionsDimension, in. (mm) Permissible Variation, max, 6in. (6mm)Application PS Applicati
47、on PX Application PA3 (76) and under18 (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 DistortionSpecified Dimension, in.(mm)Permissible Distortion, max, in. (mm)App
48、lication PS Application PX Application PA8 (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 limit no limitC1272073
