ASTM_D_5361_-_D_5361M_-_14.pdf

Designation:D5361/D5361M14Standard Practice forSampling Compacted Bituminous 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 last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.NoteStandard Practice was corrected editorially and the year date was changed on March 7,2014.1.Scope1.1 This practice describes a procedure for removal of asample of compacted bituminous mixture from a pavement forlaboratory testing.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 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 concerns,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:2D3665 Practice for Random Sampling of Construction Ma-terialsD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving Materials3.Significance and Use3.1 Samples obtained in accordance with the proceduregiven in this practice may be used to measure pavementthickness,density,resilient or dynamic modulus,tensilestrength,Marshall or Hveem stability,or for extraction testing,to determine asphalt content,asphalt properties and mixgradation.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 capable 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 acceptable guideline provides ameans of evaluating and controlling some of those factors.4.Apparatus4.1 To minimize distortion of the compacted bituminouscourse(s),power equipment shall be used to secure the sample.The equipment may be either a core drill or power saw.4.2 The cutting edge of the core drill bit shall be of hardenedsteel or other suitable material with diamond chips embeddedin the metal cutting edge.4.3 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.4.4 A source of cooling water,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.Atany time there is evidence of damage to the edge of the sampledue to the generation of heat caused by friction,a coolingmaterial shall be applied to the cutting tool or to the pavementsurface to minimize sample distortion or other damage.4.5 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 of the core and shall have arigidly attached handle.A split core barrel of the requiredradius 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 into1This 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 March 7,2014.Published March 2014.Originallyapproved in 1993.Last previous edition approved in 2011 as D5361/D5361M 11a.DOI:10.1520/D5361_D5361M-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer 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 the kerf.In such cases,other means may have to be used for debonding.4.6 A lifting device(core lifter)for removing core samplesfrom holes will preserve the integrity of the