1、Designation:D7560161Standard Test Method forDetermination of Fiber Length Percentages in HydraulicErosion Control Products(HECPs)1This standard is issued under the fixed designation D7560;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revisi
2、on,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.1NOTEEditorially corrected units of measurement statement in June 2021.1.Scope1.1 This test method provides the require
3、ments and proce-dures needed to determine quantitatively the fiber lengthpercentages of hydraulic erosion control products(HECPs).1.2 This test method allows for comparative evaluation ofin-process HECPs to a manufactured product specification.1.3 UnitsThe values stated in SI units are to be regarde
4、das standard.The values given in parentheses are provided forinformation only and are not considered standard.1.4 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.5 This standard does not purport to address all of th
5、esafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-danc
6、e with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standard
7、s:2D653 Terminology 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 ConstructionD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Us
8、e in Soil,Rock,andConstruction Materials TestingD6026 Practice for Using Significant Digits in GeotechnicalDataE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 DefinitionsFor common definitions of technical termsused in this standard,refer to Terminology D653.3.2 Defi
9、nitions of Terms Specific to This Standard:3.2.1 hydraulic erosion control product,HECP,namanufactured,temporary,degradable,pre-packaged fibrousmaterial that is mixed with water and hydraulically applied asa slurry designed to reduce soil erosion and assist in theestablishment and growth of vegetati
10、on.3.2.2 hydraulically applied,adjin erosion control,appliedwithin a water slurry,solution,or emulsion to the soil surfaceas a spray-on or dropped-on application through variousmeans,such as nozzle,tower,and aerially.4.Summary of Test Method4.1 A sample of HECP is placed in a sieve shaker machineand
11、 after five minutes,the various screens are emptied and thecumulative fiber retained on each sieve is weighed and thepercent retained for each sieve is recorded on the data sheet.5.Significance and Use5.1 This test method determines the various fiber lengthsthat make up an HECP fiber mulch material.
12、HECP fibers areengineered and processed to specific length and width dimen-sions that facilitate the hydraulic application and preventclogging of the pump,recirculation pipes,nozzles,and tips.5.2 This test method is used by manufacturers of HECPproducts for quality assurance testing.1This test metho
13、d is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.25 on Erosion andSediment Control Technology.Current edition approved July 1,2016.Published July 2016.DOI:10.1520/D7560-16E01.2For referenced ASTM standards,visit the ASTM website,ww
14、w.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 StatesThis internati
15、onal standard was developed in accordance with internationally recognized principles on standardization established 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.
16、16.Apparatus6.1 A balance or scale conforming to the requirements ofGuide D4753 readable to 0.1%of the total test mass,or better.See Annex A1 for examples.6.2 Sieve shaker machine capable of a minimum of 270oscillations in a circular motion and a minimum of 150 verticaltaps per minute.The sieve shaker must be able to hold six fullheight 50 mm(2 in.)sieves with a diameter of 200 mm(8 in.).6.3 Test sieves compliant with E11-13,Requirements.Thespecified sieve frame are 203 mm(8 in.)in diameter and
