1、Designation:D819818Standard Specification forHydraulically Applied 100%Wood Fiber Mulches1This standard is issued under the fixed designation D8198;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
2、 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the physical properties andtesting requirements for 100%wood fiber Hydraulic ErosionControl Products(HECP)mulches.1.2 Unit
3、sThe values stated in SI units are to be regardedas standard.The values given in parentheses are mathematicalconversions to inch-pound units,which are provided forinformation only and are not considered standard.Reporting oftest results in units other than SI shall not be regarded asnonconformance w
4、ith this standard.The sieve designations areidentified using the“alternative”system in accordance withPractice E11,such as 3-in.and No.200,instead of the“standard”of 75-mm and 75-m,respectively.1.3 All observed and calculated values shall conform to theguidelines for significant digits and rounding
5、established inPractice D6026,unless superseded by this test method.1.3.1 The procedures used to specify how data are collected/recorded and calculated in the standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.T
6、he 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
7、 scopeof these test methods to consider significant digits used inanalysis methods for engineering data.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,health,
8、and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Internationa
9、l Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD2974 Test Methods for Moisture,Ash,and Organic Matterof Peat and Other Organic
10、SoilsD2976 Test Method for pH of Peat MaterialsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD6026 Practice for Using Significant Digits in GeotechnicalDataD7367 Test Method for Determining Water
11、 Holding Capac-ity of Fiber Mulches for Hydraulic PlantingD7560 Test Method for Determination of Fiber LengthPercentages in Hydraulic Erosion Control Products(HECPs)E11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 Definitions:3.1.1 For definitions of common technical
12、terms used in thisstandard,refer to Terminology D653.3.1.2 hydraulic erosion control product,(HECP),namanufactured,temporary,degradable,prepackaged fibrous ma-terial that is mixed with water and hydraulically applied as aslurry designed to reduce soil erosion and assist in theestablishment and growt
13、h of vegetation.4.Materials4.1 Wood fiber mulch shall be produced from wood chipsthat are 100%virgin,or recycled,or a combination of both.There are typically three types of wood fiber mulch based onvarious levels of manufacturing technologies that impact thewater holding capacity of the fibers.1This
14、 test method 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 15,2018.Published August 2018.DOI:10.1520/D8198-18.2For referenced ASTM standards,visit the ASTM
15、 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 StatesThi
16、s international 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.1 5.Physical Properties5.1 Table 1 presents the requirements the wood fiber mulchmust meet.6.Sampling and Test Specimens6.1 The sample to be used for evaluating the physicalproperties shall
