ASTM_D_2974_-_20e1.pdf

Designation:D2974201Standard Test Methods forDetermining the Water(Moisture)Content,Ash Content,andOrganic Material of Peat and Other Organic Soils1This standard is issued under the fixed designation D2974;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 parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTESubsection 4.1 was editorially corrected in March 2020.1.Scope*1.1 These test methods cover the measurement of water(moisture)content,ash content,and organic material in peatsand other organic soils,such as organic clays,silts,and mucks.Test Method D2216 provides for determining the water(mois-ture)content in mineral soils and rock.1.2 This standard has two different ways to determine thewater content of the specimen prior to determining the ashcontent based on the application for which the peat or organicsoil is being used.For general classification of peat/organicsoils not being used for fuel,the water content is determinedusing oven drying.For peat/organic soils being used as a fuel,the water content is determined first by air drying followed byoven drying.1.3 There are two Methods,A and B,for determining theash content and organic material of peat or organic soils.Forgeneral classification purposes,Method A is used to determinethe water content,ash content,and organic material.When thepeat is being used as a fuel,Method B is used to determine thewater content,ash content and organic material.1.3.1 Method AThe ash content and organic material ofpeat or organic soils is determined by igniting the oven-driedspecimen as obtained from the water content determination ina furnace at 440 6 40C.This method is used for generalpurposes and should not be used when the peat or organic soilsare being used or evaluated for use as a fuel.1.3.2 Method BThe ash content and organic material ofpeat or organic soils is determined by igniting the air-dried thenoven-dried specimen obtained from the water content determi-nation in a furnace at 750 6 38C.This method is used whenthe peat or organic soil is being used as or evaluated for use asa fuel.1.4 UnitsThe values stated in SI units are to be regardedas the standard.No other units of measurement are included inthis standard.1.5 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.5.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.The 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 scopeof this standard to consider significant digits used in analysismethods for engineering design.1.6 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 prior to use.1.7 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 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by Mass1These test methods are under the jurisdiction ofASTM Committee D18 on Soiland Rock and are the direct responsibility of Subcommittee D18.22 on Media forPlant Growth.Current edition approved Jan.15,2020.Published March 2020.Originallyapproved in 1971.Last previous edition approved in 2014 as D2974 14.DOI:10.1520/D2974-20E01.2For 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 website.*A Summary of Changes section appears at the end of this standardCopyright 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 established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers