Designation:D4553−08StandardTestMethodforDeterminingInSituCreepCharacteristicsofRock1ThisstandardisissuedunderthefixeddesignationD4553;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthepreparation,equipment,testprocedure,anddatadocumentationfordetermininginsitucreepcharacteristicsofarockmassusingarigidplatesubjectedtocontrolledloading.1.2Thistestmethodisdesignedtobeconductedinanundergroundopening;however,withsuitablemodifications,thistestcouldbeconductedatthesurface.1.3Thetestisusuallyconductedparallelorperpendiculartotheanticipatedaxisofthrust,asdictatedbythedesignloadorotherorientations,basedupontheapplication.1.4Flexibleplateapparatuscanbeusediftheanticipatedcreepdisplacementiswithinthetoleranceofthetraveloftheflatjacks.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautionstatements,seeSection8.2.ReferencedDocuments2.1ASTMStandards:2D653TerminologyRelatingtoSoil,Rock,andContainedFluidsD3740PracticeforMinimumRequirementsforAgenciesEngagedinTestingand/orInspectionofSoilandRockasUsedinEngineeringDesignandConstructionD4394TestMethodforDeterminingInSituModulusofDeformationofRockMassUsingRigidPlateLoadingMethodD4403PracticeforExtensometersUsedinRock3.Terminology3.1Definitions—SeeTerminologyD653forgeneraldefini-tions.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1creep—atime-dependentdisplacementofaplatepushedintothesurfaceoftherockbyacons...
