1、Designation:D5361/D5361M16Standard Practice forSampling Compacted Asphalt Mixtures for LaboratoryTesting1This standard is issued under the fixed designation D5361/D5361M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of las
2、t revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes a procedure for removal of asample of compacted asphalt mixture from a pavement forlaboratory testing.
3、1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance
4、with the standard.1.3 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.1.4 This standard does not purport to address all of thesafety conce
5、rns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D8 Terminology Relating to Materials for Roa
6、ds and Pave-mentsD3665 Practice for Random Sampling of Construction Ma-terialsD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving Materials3.Terminology3.1 Refer to Terminology D84.Significance and Use4.1 Samples obtained in accordance with the procedure
7、given in this practice may be used to measure many differentproperties of a compacted asphalt pavement including,but notlimited to,pavement thickness,density,resilient or dynamicmodulus,tensile strength,Marshall or Hveem stability,or forextraction testing,to determine asphalt content,asphaltproperti
8、es,and mix gradation.NOTE1The quality of the results produced by this standard aredependent on the competence of the personnel performing the procedureand the capability,calibration,and maintenance of the equipment used.Agencies that meet the criteria of Specification D3666 are generallyconsidered c
9、apable of competent and objective testing/sampling/inspection/etc.Users of this standard are cautioned that compliance withSpecification D3666 alone does not completely assure reliable results.Reliable results depend on many factors;following the suggestions ofSpecification D3666 or some similar acc
10、eptable guideline provides ameans of evaluating and controlling some of those factors.5.Apparatus5.1 To minimize distortion of the compacted asphaltcourse(s),power equipment shall be used to secure the sample.The equipment may be either a core drill or power saw.5.2 The cutting edge of the core dril
11、l bit shall be of hardenedsteel or other suitable material with diamond chips embeddedin the metal cutting edge.5.3 Saw blades used in a power saw shall be either ahardened metal blade with diamond chips embedded or anabrasive blade such as carborundum or similar material.5.4 A source of cooling wat
12、er,dry ice,liquid nitrogen,orother cooling material is normally required but in some casesmay be omitted when only a single sample is to be secured.Ifat any time there is evidence of damage to the edge of thesample due to the generation of heat caused by friction,acooling material shall be applied t
13、o the cutting tool or to thepavement surface to minimize sample distortion or otherdamage.5.5 A device(core debonder)for separating core samplesfrom underlying layers is not required to be used.If suchdevice is employed,it shall be a metal semicircle with an insideradius equal to the outside radius
14、of the core and shall have arigidly attached handle.A split core barrel of the required1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.30 onMethods of Sampling.Current edition approved June 1,2016.Publish
15、ed June 2016.Originallyapproved in 1993.Last previous edition approved in 2014 as D5361/D5361M 14.DOI:10.1520/D5361_D5361M-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refe
16、r to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 radius cut in half vertically and welded to a strap iron handleis suitable for this purpose.(See Fig.1.)NOTE2Differences in manufacturers tolerances of core barrelsdiameters and thicknesses may result in a particular barrel not fitting intothe kerf.In such cases,other means may have to be used for debonding.5.6 A lifting device(
