Designation:D6638−11StandardTestMethodforDeterminingConnectionStrengthBetweenGeosyntheticReinforcementandSegmentalConcreteUnits(ModularConcreteBlocks)1ThisstandardisissuedunderthefixeddesignationD6638;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodisusedtodeterminetheconnectionpropertiesbetweenalayerofgeosyntheticreinforcementandsegmentalconcreteblockunitsusedinconstructionofrein-forcedsoilretainingwalls.Thetestiscarriedoutunderconditionsdeterminedbytheuserthatreproducetheconnec-tionsystematfull-scale.Theresultsofaseriesoftestsareusedtodefinearelationshipbetweenconnectionstrengthforasegmentalunit-geosyntheticconnectionsystemandnormalload.1.2Thisisaperformancetestusedtodeterminepropertiesfordesignofretainingwallsystemsutilizingsegmentalcon-creteunitsandsoilreinforcinggeosynthetics,eithergeotextilesorgeogrids.Thetestisperformedonafull-scaleconstructionoftheconnectionandmayberuninalaboratoryorthefield.1.3ThevaluesstatedinSIunitsareregardedasthestandard.Thevaluesstatedininch-poundunitsareprovidedforinformationonly.1.4Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D448ClassificationforSizesofAggregateforRoadandBridgeConstructionD4354PracticeforSamplingofGeosyntheticsandRolledErosionControlProducts(RECPs)forTestingD4439TerminologyforGeosyntheticsD4495TestMethodforImpactResistanceofPoly(VinylChloride)(PVC)RigidProfilesbyMeansofaFallingWeightD6637TestMethodforDeterminingTensilePropertiesofGeogridsbytheSingleorMulti-RibTensileMethod3.Terminology3.1Defi...
