ASTM_D_6635_-_15.pdf

Designation:D663515Standard Test Method forPerforming the Flat Plate Dilatometer1This standard is issued under the fixed designation D6635;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 test method describes an in-situ penetration plusexpansion test.The test is initiated by forcing the steel,flatplate,dilatometer blade2,with its sharp cutting edge,into asoil.Each test consists of an increment of penetration,gener-ally vertical,followed by the expansion of a flat,circular,metallic membrane into the surrounding soil.The test providesinformation about the soils in-situ stratigraphy,stress,strength,compressibility,and pore-water pressure for use in thedesign of earthworks and foundations.1.2 This method includes specific requirements for thepreliminary reduction of dilatometer test data.It does notspecify how to assess or use soil properties for engineeringdesign.1.3 This method applies best to those sands,silts,clays,andorganic soils that can be readily penetrated with the dilatometerblade,preferably using static push(see 4.2).Test results forsoils containing primarily gravel-sized particles and larger maynot be useful without additional research.1.4 This method is not applicable to soils that cannot bepenetrated by the dilatometer2blade without causing signifi-cant damage to the blade or its membrane.1.5 The text of this standard references notes and footnotesthat provide explanatory material.These notes and footnotesshall not be considered as requirements of the standard.Theillustrations included in this standard are intended only forexplanatory or advisory use1.6 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.Reporting of test results in units other than SI shallnot be regarded as nonconformance with this test method1.7 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.8 The procedures used to specify how data are collected/recorded and calculated in this standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that should generally 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 com-mensurate with these considerations.It is beyond the scope ofthis standard to consider significant digits used in analysismethods for engineering design.1.9 ASTM International takes no position respecting thevalidity of any patent rights asserted in connection with anyitem mentioned in this standard.Users of this standard areexpressly advised that determination of the validity of any suchpatent rights,and the risk of infringement of such rights,areentirely their own responsibility.1.10 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:3D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1586 Test Method for Penetration Test(SPT)and Split-Barrel Sampling of SoilsD2435 Test Methods for One-Dimensional ConsolidationProperties of Soils Using Incremental LoadingD3441 Test Method for Mechanical Cone Penetration Testsof Soil(Withdrawn 2014)41This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.02 on Sampling andRelated Field Testing for Soil Evaluations.Current edition approved Nov.1,2015.Published December 2015.Originallyapproved in 2001.Last previous edition approved in 2007 as D6635 01(2007).DOI:10.1520/D6635-15.2The dilatometer is covered by a patent.Interested parties are invited to submitinformation regarding the identification of an acceptable alternative(s)to thispatented item to theASTM International Headquarters.Your comments will receivecareful consideration at a meeting of the responsible technical committee,whichyou may attend.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 St