ASTM C1272-2015 Standard Specification for Heavy Vehicular Paving Brick《供重型车辆通过的路面砖的标准规格》.pdf
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1、Designation: C1272 14bC1272 15Standard 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 Use of this standard and the requirements herein to evaluate and corroborate the performance of a paving unit made fromother materials, or made with other forming methods, or other means of binding the materials is not covered by the scope of thi
6、sstandard.1.5 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 Standards:2C67 Test Methods for Sampling
7、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 Specification for Pedestrian and Light Traffic Pavi
8、ng 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 to This Standard:3.2.1 heavy vehicular tr
9、affchigh volume of heavy vehicles representing trucks or combination vehicles having 3 or moreloaded axles.3.2.1.1 DiscussionHigh volume traffic is considered to be traffic over 251 daily equivalent single axle loads (ESAL).exceed 251 daily EquivalentSingleAxle Loads (ESAL). Defined by theAmericanAs
10、sociation of State Highway Transportation Officials (AASHTO), an ESALconverts a mix of axle loads on a pavement to an equivalent number of 18,000 lb (80 kN) single axle loads.1 This specification is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsi
11、bility of Subcommittee C15.02 on Brickand Structural Clay Tile.Current edition approved Dec. 15, 2014Dec. 1, 2015. Published December 2014January 2016. Originally approved in 1995. Last previous edition approved in 2014 asC1272 14a.C1272 14b. DOI: 10.1520/C1272-14B.10.1520/C1272-15.2 For referencedA
12、STM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual 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
13、 of an ASTM standard an indication of what changes have been made to the previous version. Becauseit 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
14、published by ASTM is to be considered the official document.*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 States14. Classification4.1 TypesHeavy vehicular paving brick are cl
15、assified 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 asphaltbituminoussetting bed supported by an adequate asphalt or concrete base.4.1.2 Type FBrick intended to be set in a sand setting b
16、ed, with sand joints, and supported by an adequate base.4.2 ApplicationsHeavy vehicular paving brick are classified 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 wh
17、ere 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 resulting from nonuniformity in size, color,and texture.5. Physical Propert
18、ies5.1 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 AlternativeThe 24-h cold water absorption requirements specified in 5.1.1 s
19、hall 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 provisions of 5.1.2 are specified only as an alternative when the samp
20、le 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 representative sample of five brick survives 15 cycles of the sulfate soundne
21、ss 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 information on the performance over time of similar units in a similar ap
22、plication 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 the size requirements in 7.2 shall not berequired.5.2 Abrasion Resist
23、anceEach 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 in percent and the compressivestrength in pounds per square inch as f
24、ollows: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 to one half the full length of the unit (614 in. (66 mm) for each dim
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