1、Designation:D5239121Standard Practice forCharacterizing Fly Ash for Use in Soil Stabilization1This standard is issued under the fixed designation D5239;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numbe
2、r in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorially updated units of measurement statement in April 2018.1.Scope*1.1 This practice covers procedures for characterizing flyash to be used in s
3、oil stabilization.This practice lists represen-tative test methods for determining the chemical,physical,andcementitious properties of fly ash.A broad guideline is pro-vided in Appendix X1 that explains the significance of theseproperties in soil stabilization.1.2 All observed and calculated values
4、shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.2.1 The method used to specify how data are collected,calculated,or recorded in this standard is not directly related tothe accuracy to which the data can be applied in design or otheruses,or both.How o
5、ne applies the results obtained using thisstandard is beyond its scope.1.3 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.4 This standard does not purport to address all of
6、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.1.5 This practice offers a set of instructions for perfor
7、mingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunctionwith professional judgment.Not all aspects of this practice maybe applicable in all circumstances.This ASTM standard is notintended to represent or replace the standard of care by
8、 whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique aspects.The word“Standard”in thetitle of this document means only that the document has beenapproved through the ASTM consensus process.1.6 The text of
9、 this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.7 This international standard was developed in accor-dance with internationally recognized principl
10、es 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:2C25 Test Methods for Chemical Analysis
11、of Limestone,Quicklime,and Hydrated LimeC109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C191 Test Methods for Time of Setting of Hydraulic Cementby Vicat NeedleC265 Test Method for Water-Extractable Sulfate in HydratedHydraulic Cement Mort
12、ar(Withdrawn 2017)3C305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC311 Test Methods for Sampling and Testing Fly Ash orNatural Pozzolans for Use in Portland-Cement ConcreteC593 Specification for Fly Ash and Other Pozzolans for UseWith Lime for Soil St
13、abilizationC821 Specification for Lime for Use with PozzolansD653 Terminology Relating to Soil,Rock,and ContainedFluidsD1293 Test Methods for pH of WaterD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and Construc
14、tion1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.15 on Stabilization WithAdmixtures.Current edition approved July 1,2012.Published September 2012.Originallyapproved in 1992.Last previous edition approved in 2004 a
15、s D5239 04.DOI:10.1520/D5239-12E01.2For 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.3The last approved version of t
16、his historical standard is referenced onwww.astm.org.*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 Te
