1、Designation:D482288(Reapproved 2019)Standard Guide forSelection of Methods of Particle Size Analysis of FluvialSediments(Manual Methods)1This standard is issued under the fixed designation D4822;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、 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 guide covers the selection of methods for deter-mining the size distribution of fluvial sediment
3、s particles in therange greater than 0.45 m using manual methods.Manualmethods are defined as those methods that require the operatorto do some actual measurements and calculations.An auto-mated method would be one which,after the sample isprepared and inserted into an instrument,the instrument(mach
4、ine)does the measuring and calculations,not the opera-tor.Not all manual methods are presented in this guide.However,where available,at least two methods for eachparticle size range are given.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included i
5、n thisstandard.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-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations pr
6、ior to use.1.4 This international standard was developed in accor-dance 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 TechnicalB
7、arriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D422 Test Method for Particle-Size Analysis of Soils(With-drawn 2016)3D1129 Terminology Relating to WaterD4410 Terminology for Fluvial SedimentD4411 Guide for Sampling Fluvial Sediment in MotionE20 Practice for Particle Size An
8、alysis of Particulate Sub-stances in the Range of 0.2 to 75 Micrometres by OpticalMicroscopy(Withdrawn 1994)33.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminologies D1129 and D4410.3.2 Definitions of Terms Specific to This Standard:3.2.1 particle count
9、,na method of particle size analysis inwhich the number of particles in the various size ranges arecounted manually.3.2.2 particle size,nthe diameter,usually the intermediatediameter,of a particle measured by settling,sieving,micrometric,or direct measurement methods(see 5.2).3.2.3 particle size dis
10、tribution,nthe relative amount of asediment sample in a range of specific sizes in terms ofpercentages by mass,volume,or number,finer than a givenparticle size.4.Summary of Guide4.1 This guide consists of suggested manual test methodsfor analyzing fluvial sediment samples for particle size distri-bu
11、tion.5.Significance and Use5.1 This guide is general and useful in helping the user todetermine an appropriate manual test method for determiningthe particle size distribution of fluvial sediments.The sug-gested test methods are not described in this guide,butreferences are given so that the user ma
12、y obtain more infor-mation about each test method.1This guide is under the jurisdiction of ASTM Committee D19 on Water and isthe direct responsibility of Subcommittee D19.07 on Sediments,Geomorphology,and Open-Channel Flow.Current edition approved Nov.1,2019.Published January 2020.Originallyapproved
13、 in 1988.Last previous edition approved in 2014 as D4822 88(2014).DOI:10.1520/D4822-88R19.2For 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
14、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 StatesThis international standard was developed in accordance with internationally recogni
15、zed 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.5.2 It should be noted that different test methods may andoften times
16、do produce different particle size distributions forthe same sample.This is due in part to the different testmethods requiring native or distilled water,differences indispersion methods used,and differences in what the testmethod is measuring,that is,physical or sedimentation diam-eter.6.Sampling6.1 Collect the samples in accordance with Guide D4411 or“Field Methods for Measurement of Fluvial Sediments”(1).47.Procedure7.1 Visually inspect the sample or streambed to estimateparticle size ranges c
