Designation:D4555−10StandardTestMethodforDeterminingDeformabilityandStrengthofWeakRockbyanInSituUniaxialCompressiveTest1ThisstandardisissuedunderthefixeddesignationD4555;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthemeasurementofthedeform-abilityandstrengthoflargeinsituspecimensofrockbyauniaxialcompressivetest.Thetestresultstakeintoaccounttheeffectofbothintactmaterialbehaviorandthebehaviorofdiscontinuitiescontainedwithinthespecimenblock.1.2Thistestmethoddoesnotcoverwhichtypeofspecimenshouldbetestedorwhetheranisotropicfactorsshouldbeconsidered.Thespecificsofthetestprogramneedtobedevelopedpriortotestingandpossiblyevenbeforesampling.Suchspecificswouldbedependentontheintendeduseofthedata,aswellasanybudgetaryconstraintsandotherfactors,whichareoutsidethescopeofthistestmethod.1.3Theoreticallythereisnolimittothesizeofthetestspecimen;however,sizewillbecontrolledbythestrengthofthetestspecimenrelativetothecapacityofanyloadingapparatusandbearingcapacityofthesurfacetheapparatusmustreactagainst.Furthermore,theorientationandstrengthofdiscontinuitiesrelativetothespecimengeometrywillbeafactorlimitingspecimensizetoo.1.4AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D653TerminologyRelatingtoSoil,Rock,andContainedFluidsD2216TestMethodsforLaboratoryDeterminationofWater(Moisture)ContentofSoilandRockbyMassD3740PracticeforMinimumRequirementsforAgen...
