Designation:D6916−18StandardTestMethodforDeterminingtheShearStrengthBetweenSegmentalConcreteUnits(ModularConcreteBlocks)1ThisstandardisissuedunderthefixeddesignationD6916;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisusedtodeterminetheshearstrengthbetweentwolayersofsegmentalconcreteblockunitsusedinconstructionofreinforcedsoilretainingwalls.Thetestiscarriedoutunderconditionsdeterminedbytheuserthatreproducethefacingsystematfullscale.Theresultsofaseriesoftestsareusedtodefinearelationshipbetweenshearstrengthdevelopedbetweensegmentalconcreteunitsandnormalload.1.2Thisisaperformancetestusedtodeterminepropertiesfordesignofretainingwallsystemsutilizingsegmentalcon-creteunitsandsoilreinforcinggeosynthetics,eithergeotextilesorgeogrids.Thetestisperformedonafull-scaleconstructionofthefacingsystemandmayberuninalaboratoryorthefield.1.3ThevaluesstatedinSIunitsareregardedasthestandard.Thevaluesstatedininch-poundunitsareprovidedforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D448ClassificationforSizesofAggregateforRoadandBridgeConstructionD4354PracticeforSamplingofGeosyntheticsandRolledErosionControlProducts(RECPs)forTestingD4439TerminologyforGeosyntheticsD4595TestMethodforTensilePropertiesofGeotextilesbyt...
