ASTM_D_7113_-_D_7113M_-_10.pdf

Designation:D7113/D7113M10Standard Test Method forDensity of Bituminous Paving Mixtures in Place by theElectromagnetic Surface Contact Methods1This standard is issued under the fixed designation D7113/D7113M;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.1.Scope1.1 This test method covers the procedures for determiningthe in-place density and relative compaction of bituminousconcrete pavement paving mixtures by an electromagneticsurface contact device by measuring changes in the electro-magnetic field resulting from the compaction process.1.2 The equipment referenced in this method is a surfacecontact device,which must accommodate surface moisture andtemperature variation in the range typically encountered inpaving applications.This can be accomplished by designparameters that reduce the devices sensitivity to surfacemoisture and temperature variation or by measurements andalgorithms to account for surface moisture and temperaturevariance in the rolling pattern.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith 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 prior to use.2.Referenced Documents2.1 ASTM Standards:2C670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsD1188 Test Method for Bulk Specific Gravity and Density ofCompacted Bituminous Mixtures Using Coated SamplesD2726 Test Method for Bulk Specific Gravity and Densityof Non-Absorptive Compacted Bituminous MixturesD3665 Practice for Random Sampling of Construction Ma-terialsD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD5361 Practice for Sampling Compacted Bituminous Mix-tures for Laboratory TestingD6752 Test Method for Bulk Specific Gravity and Densityof Compacted Bituminous Mixtures Using AutomaticVacuum Sealing Method3.Significance and Use3.1 The test method described is useful as a rapid,nonde-structive technique for determining the in-place density orrelative compaction of compacted bituminous mixtures.3.2 The test method can be used to establish the properrolling effort and pattern to achieve the required density.3.3 The non-destructive nature of the test allows repetitivemeasurements to be made at a single test location betweenroller passes or at multiple locations across the mat to monitorchanges in density.3.4 The density results obtained by this test method arerelative.Device calibration(correlation with other test meth-ods is required to convert the results obtained using thismethod to actual density.Section 6 of this test methoddescribes a method that has proven to be acceptable forcorrelation.NOTE1The personnel and equipment used in performing this test canbe evaluated in accordance with Specification D3666.NOTE2Research and evaluation of devices used in this test methodhas been conducted.Reference is made to“Evaluation of Non-NuclearGauges to Measure Density of Hot-Mixed Asphalt Pavements,”a pooledfund study,Pedro Romero,Ph.D.,P.E.,July 2002.4.Interferences4.1 Electromagnetic force fields such as high-tension powerlines,or large metal objects in close proximity may interferewith the device reading.4.2 The chemical composition of the material being testedmay significantly affect the measurement and adjustments may1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.21 onSpecific Gravity and Density of Bituminous Mixtures.Current edition approved Dec.1,2010 Published December 2010.Originallyapproved in 2005.Last previous edition approved in 2009 as D7113 09.DOI:10.1520/D7113_D7113M-10.2For 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 be necessary.The device can be calibrated to the specific mixdesign being used in the field.4.3 The test method exhibits spatial bias in that the device ismost sensitive to the density of the material in closest prox-imity to the sensor.4.4 The surface texture of the material being tested maycause lower than actual density determination.4.5 Oversize aggregate particles i