1、Designation:D585200(Reapproved 2007)1Standard Test Method forErodibility Determination of Soil in the Field or in theLaboratory by the Jet Index Method1This standard is issued under the fixed designation D5852;the number immediately following the designation indicates the year oforiginal adoption or
2、,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.1NOTEEditorially removed Note 2 in December 2014.1.Scope1.1 This test method covers the estimatio
3、n of erodibility ofa soil by a jet index method.This test method involves eitherpreparing a field site or obtaining a relatively undisturbed soilsample and the subsequent activities for the determination ofthe erodibility of soil.This test method also may be run oncompacted samples in the laboratory
4、.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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-
5、priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D420 Guide to Site Characterization for Engineering Designand Construction Purposes(Withdrawn 2011)3D653 Terminology Relating to Soil,Rock,and Containe
6、dFluidsD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD2488 Practice for Description and Identification of Soils(Visual-Manual Procedure)D3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed
7、 in Engineering Design and ConstructionD4220 Practices for Preserving and Transporting SoilSamplesD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials Testing3.Terminology3.1 Definitions:3.1.1 For common definitions of terms
8、 in this standard,referto Terminology D653.4.Significance and Use4.1 Water flow in nature exerts a force on soils that resultsin erosion.Erosion potential of a soil is of concern in vegetatedchannels,road embankments,dams,levees,spillways,con-struction sites,etc.The jet index method is intended to p
9、rovidea standard method of expressing erosion resistance;to assistthose who work with different soils and soil conditions tomeasure erosion resistance for design purposes;and to providea common system of characterizing soil properties to developperformance and prediction relationships.4.2 The jet in
10、dex test is not suited for determining erodibil-ity of soils that have structure characteristics larger than thescale of the jet testing device.For example,the erodibility ofsoil that has a dominant soil structure of 7 to 8 cm or larger(that is,aggregate,clod,or particle size),that might play a keyr
11、ole in the detachment process,should not be estimated withthe jet index test.Care should be taken that the test sample andtest are representative of expected conditions at the site underinvestigation.If it is known in advance that the soil will besaturated prior to an erosion event,then the soil sho
12、uld betested in that condition.At present,the effects of waterchemistry on detachment rate are unknown.Therefore,waterquality during testing should be simulated as close as possibleto the water quality anticipated during actual erosion.NOTE1The quality of the result produced by this standard is depe
13、ndupon the competence of the personnel performing it,and the suitability ofthe equipment and facilities used.Agencies that meet the criteria ofPractice D3740 are generally considered capable of competent andobjective testing and sampling.Users of this standard are cautioned thatcompliance with Pract
14、ice D3740 does not in itself assure reliable results.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.02 on Sampling andRelated Field Testing for Soil Evaluations.Current edition approved July 1,2007.Published Augus
15、t 2007.Originallyapproved in 1995.Last previous edition approved in 2000 as D5852 00.DOI:10.1520/D5852-00R07E01.2For 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 stand
16、ards 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 Reliable results depend on many factors;Practice D3740 provides a meansof evaluating some of those factors.5.Apparatus5.1 Field Testing:5.1.1 Vertical Submerged Jet DeviceAn apparatus that canbe taken to the field to index soil erodibility(see Fig.1).Thedevice
