1、Designation:D647517Standard Test Method forMeasuring Mass per Unit Area of Erosion Control Blankets1This standard is issued under the fixed designation D6475;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、 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 can be used as an index test todetermine the mass per unit area of all erosion control blankets(ECBs).1.2 All observed an
3、d calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.2.1 The method used to specify collection,calculation,orrecording of data in this test method is not directly related tothe accuracy to which the data can be applied in design or oth
4、eruses or both.Application of the results obtained using this testmethod is beyond its scope.1.3 UnitsThe values stated in SI units are to be regardedas the standard.No other units of measurement are included inthis standard.1.4 This standard does not purport to address all of thesafety concerns,if
5、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:2D123 Terminology Relating to TextilesD653 Terminolo
6、gy Relating to Soil,Rock,and ContainedFluidsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD4439 Te
7、rminology for GeosyntheticsD5261 Test Method for Measuring Mass per Unit Area ofGeotextilesD6026 Practice for Using Significant Digits in GeotechnicalDataE145 Specification for Gravity-Convection and Forced-Ventilation OvensE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE69
8、1 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 Erosion Control Technology Council Standard:3Technical Guidance Manual,Terminology and Index TestingProcedures for Rolled Erosion Control Products3.Terminology3.1 DefinitionsFor other terminology,see Ter
9、minologiesD123,D653,and D4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 erosion control blanket,ECB,ndegradable material,composed primarily of processed natural organic materials,manufactured or fabricated into rolls designed to reduce soilerosion and assist in the growth,establishmen
10、t,and protectionof vegetation.3.2.2 erosion control net,ECN,nplanar woven naturalfiber or extruded geosynthetic mesh used as a component in themanufacture of ECBs.3.2.3 index test,ntest procedure that may be used toestablish an order for a set of specimens with respect to theproperty of interest.3.2
11、.4 lot,nunit of production,or a group of other units orpackages,taken for sampling or statistical examination,havingone or more common properties and being readily separablefrom other similar units.3.2.5 natural,adjdescribes a class of various generalfibers of animal or vegetable origin.3.2.6 polyme
12、r,nchemical compound or mixture of com-pounds formed by polymerization and consisting essentially ofrepeating structural units.3.2.7 sample,nportion of material that is taken for testingor recording purposes and used in the laboratory as a source ofindividual specimens.1This test method is under the
13、 jurisdiction of ASTM Committee D18 onSoil andRock and is the direct responsibility of Subcommittee D18.25 on Erosion andSediment Control Technology.Current edition approved Feb.15,2017.Published March 2017.Originallyapproved in 1999.Last previous edition approved in 2006 as D647506,which waswithdra
14、wn January 2015 and reinstated in February 2017.DOI:10.1520/D6475-17.2For 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 websi
15、te.3Available from ISO Case Postale 56,CH-1211,Geneva 20,Switzerland.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization estab
16、lished in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.2.8 temporary degradable,nerosion control blanketcomposed of biologically,photochemically,or otherwise de-gradable materials that temporarily reduce soil erosion andenhances the establishment of vegetation.4.Summary of Test Method4.1 The mass per unit area of an ECB is determined byweighing test specimen
