ASTM_D_6539_-_13.pdf

Designation:D653913Standard Test Method forMeasurement of the Permeability of Unsaturated PorousMaterials by Flowing Air1This standard is issued under the fixed designation D6539;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers laboratory determination of thecoefficient of permeability for the flow of air through unsatu-rated porous materials.1.2 This test method may be used with intact or compactedcoarse grained soils,silts,or lean cohesive soils that have a lowdegree of saturation and that have permeability between 1.0 10-15m2(1.01 millidarcy)and 1.0 10-10m2(101 darcy).1.3 The values stated in SI units are to be regarded asstandard.1.3.1 By tradition in U.S.practice,the permeability ofporous media is reported in units of darcy,although the SI unitfor permeability is m2.1.4 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.4.1 For the purpose of comparing a measured or calcu-lated value with specified limits,the measured or calculatedvalue shall be rounded to the same precision as the specifiedlimits.1.4.2 The procedures used to specify how data are collected/recorded or calculated,in this standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduce significant digits of reported data to becommensurate with these considerations.It is beyond the scopeof this standard to consider significant digits used in analysismethods for engineering design.1.5 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:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD698 Test Methods for Laboratory Compaction Character-istics of Soil Using Standard Effort(12 400 ft-lbf/ft3(600kN-m/m3)D1557 Test Methods for Laboratory Compaction Character-istics of Soil Using Modified Effort(56,000 ft-lbf/ft3(2,700 kN-m/m3)D2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD3550 Practice for Thick Wall,Ring-Lined,Split Barrel,Drive Sampling of SoilsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4220 Practices for Preserving and Transporting SoilSamplesD4525 Test Method for Permeability of Rocks by FlowingAirD4564 Test Method for Density and Unit Weight of Soil inPlace by the Sleeve Method(Withdrawn 2013)3D4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD4767 Test Method for Consolidated Undrained TriaxialCompression Test for Cohesive SoilsD5084 Test Methods for Measurement of Hydraulic Con-ductivity of Saturated Porous Materials Using a FlexibleWall PermeameterD5856 Test Method for Measurement of Hydraulic Conduc-tivityofPorousMaterialUsingaRigid-Wall,1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.04 on HydrologicProperties and Hydraulic Barriers.Current edition approved May 1,2013.Published July 2013.Originally approvedin 2000.Last previous edition approved in 2000 as D6539 00(2006)2.DOI:10.1520/D6539-13.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Compaction-Mold PermeameterD6026 Practice for Using Significant Digits in GeotechnicalDataE1 Specification for ASTM Liquid-in-Glass ThermometersE145 Specification for Gravity-Convection and Forced-Ventilation OvensE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Terminology3.1 DefinitionsFor definitions of technical terms in thisstandard,refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 darcya porous medium has a permeability of onedarcy when a single-phase fluid having a viscosity of 10-3Pas(1-cP)that completely fills th