ASTM_C_593_-_06_2011.pdf

Designation:C59306(Reapproved 2011)Standard Specification forFly Ash and Other Pozzolans for Use With Lime for SoilStabilization1This standard is issued under the fixed designation C593;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.1.Scope*1.1 This specification covers the qualification of fly ash andother pozzolans for use with lime in plastic,nonplastic mix-tures and other mixtures that affect lime pozzolanic reactionrequired by soil stabilization.Evaluation of pozzolans contain-ing available lime,such as Class C fly ash,is given consider-ation.Pozzolans covered include artificial pozzolans such asfly ash,and natural pozzolans,such as diatomite and pumicite,in either raw or calcined state.1.2 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C25 Test Methods for Chemical Analysis of Limestone,Quicklime,and Hydrated LimeC39/C39M Test Method for Compressive Strength of Cylin-drical Concrete SpecimensC50 Practice for Sampling,Sample Preparation,Packaging,and Marking of Lime and Limestone ProductsC51 Terminology Relating to Lime and Limestone(as usedby the Industry)C109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C110 Test Methods for Physical Testing of Quicklime,Hydrated Lime,and LimestoneC305 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 ConcreteC670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsC821 Specification for Lime for Use with PozzolansD1557 Test Methods for Laboratory Compaction Character-istics of Soil Using Modified Effort(56,000 ft-lbf/ft3(2,700 kN-m/m3)3.Terminology3.1 For definitions of terms specific to this specification,seeTerminology C51.4.Physical Properties4.1 Pozzolans for use with lime in plastic mixtures,whentested in accordance with the procedures of Sections 7-9,shallconform to the requirements prescribed in Table 1.4.2 Pozzolans for use with lime in nonplastic mixtures shallconform to the requirements of Table 1,except the lime-pozzolan strength requirement,and in addition shall be testedin accordance with the procedures of Section 10.NOTE1If the minimum value of the vacuum saturation strengthspecified in 4.2 of this specification is reduced,sufficient documentationshall be provided to the user to enable the determination of a satisfactoryminimum residual strength for the given material in its intended use.Suchdocumentation should include at least the following:(1)determination ofa minimum residual strength requirement that will enable the material toperform its structural function in the pavement system;and(2)a rationalanalysis,using actual climatic data,that will show the severity of exposureof the material to cyclic freeze-thaw action.5.Sampling5.1 Sample pozzolan in accordance with the applicableprovisions of Test Methods C311,except take one 10-lb(4.5-kg)sample from approximately each 400 tons(350 metrictons)of pozzolan.5.2 The sampling procedures and techniques shall be con-sistent from original sample to project completion.TEST METHODS6.Significance and Use6.1 This test method states various procedures that arerecommended to quantify various aspects of the lime enhanced1This specification is under the jurisdiction of ASTM Committee C07 on Limeand is the direct responsibility of Subcommittee C07.02 on Specifications andGuidelines.Current edition approved June 1,2011.Published July 2011.Originally approvedin 1966.Last previous edition approved in 2006 as C593 06.DOI:10.1520/C0593-06R11.2For 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 States1 pozzolanic reaction.These tests are intended to qualify sourcesof fly ash and other pozzolans to meet specified job or projectcriteria as related to soil stabilization.7.Water-Soluble Fraction7.1 ProcedurePlace 10 g of a dried pozzolan sample(dried to constant weight in an oven at 221 to 230 F(105 to110 C)in a 200-mL Erlenmeyer flask and add 100 mL ofdistilled water at 73 6 3 F(23 6 2 C).Shake well by handuntil no lumps can be observed;th