ASTM_D_6024_-_D_6024M_-_15.pdf

Designation:D6024/D6024M15Standard Test Method forBall Drop on Controlled Low Strength Material(CLSM)toDetermine Suitability for Load Application1This standard is issued under the fixed designation D6024/D6024M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method explains the determination of theability of Controlled Low Strength Material(CLSM)to with-stand loading by repeatedly dropping a metal weight onto thein-place material.1.2 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.2.1 The procedures used to specify how data are collected/recorded and calculated in the 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 these test methods to consider significant digits used inanalysis methods for engineering data.1.3 UnitsThe values stated in either SI units or inch-pound units presented in brackets are to be regarded separatelyas standard.The values stated in each system shall be usedindependently of the other.Combining values from the twosystems may result in non-conformance with the standard.1.4 CLSM is also known as flowable fill,controlled densityfill,soil-cement slurry,soil-cement grout,unshrinkable fill,“K-Krete,”and other similar names.1.5 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.(WarningFreshhydraulic cementitious mixtures are caustic and may causechemical burns to skin and tissue upon prolonged exposure.2)2.Referenced Documents2.1 ASTM Standards:3C125 Terminology Relating to Concrete and Concrete Ag-gregatesD653 Terminology Relating to Soil,Rock,and ContainedFluidsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4832 Test Method for Preparation and Testing of Con-trolled Low Strength Material(CLSM)Test CylindersD6023 Test Method for Density(Unit Weight),Yield,Ce-ment Content,and Air Content(Gravimetric)of Con-trolled Low-Strength Material(CLSM)D6026 Practice for Using Significant Digits in GeotechnicalDataD6103 Test Method for Flow Consistency of ControlledLow Strength Material(CLSM)(Withdrawn 2013)43.Terminology3.1 DefinitionsFor definitions of common technical termsin this test method,refer to Terminology standards C125 andD653.3.2 Definitions of Terms Specific to This Standard:3.2.1 Controlled Low Strength Material(CLSM),na mix-ture of soil,aggregates(sand,gravel,or both),cementitiousmaterials,potable water,and sometimes admixtures,that hard-ens into a material with a higher strength than the soil,but lessthan 8400 kPa 1200 psi.3.2.1.1 DiscussionUsed as a replacement for compactedbackfill,CLSM can be placed as a slurry,a mortar,or a1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.15 on Stabilization WithAdmixtures.Current edition approved July 1,2015.Published July 2015.Originally approvedin 1995.Last previous edition approved in 2007 as D6024 07.DOI:10.1520/D6024_D6024M-15.2Section on Safety Precautions,Manual of Aggregate and Concrete Testing,Annual Book of ASTM Standards,Vol.04.02.3For 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.4The last approved version of this 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 States1 compacted material and typically has strengths of 350 to 700kPa 50 to 100 psi for most applications.4.Summary of Test Method4.1 A half spherical weight is dropped five times from aspecific height onto the surface of in-place CLSM.Thediameter of the resulting indentation is measured and comparedto established criteria.The indentation is inspected for any freewater brought to the surface from the impact.5.Significance and Use5.1 This test method is used primarily as a field test to