Designation:C140/C140M−17aStandardTestMethodsforSamplingandTestingConcreteMasonryUnitsandRelatedUnits1ThisstandardisissuedunderthefixeddesignationC140/C140M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thesetestmethodsprovidevarioustestingprocedurescommonlyusedforevaluatingcharacteristicsofconcretemasonryunitsandrelatedconcreteunits.Methodsareprovidedforsampling,measurementofdimensions,compressivestrength,absorption,unitweight(density),moisturecontent,flexuralload,andballastweight.Notallmethodsareappli-cabletoallunittypes,however.1.2Specifictestingandreportingproceduresareincludedinannexestothesetestmethodsforthefollowingspecificunittypes:AnnexA1—Concretemasonryunits(SpecificationsC90,C129)AnnexA2—Concreteandcalciumsilicatebrick(SpecificationsC55,C73,C1634)AnnexA3—Segmentalretainingwallunits(SpecificationC1372)AnnexA4—Concreteinterlockingpavingunits(SpecificationC936/C936M)AnnexA5—Concretegridpavingunits(SpecificationC1319)AnnexA6—Concreteroofpavers(SpecificationC1491)AnnexA7—Dry-castarticulatingconcreteblock(SpecificationD6684)1.3Thetestproceduresincludedinthesetestmethodsarealsoapplicabletoothertypesofunitsnotreferencedinthesetestmethods,butspecifictestingandreportingrequirementsforthoseunitsarenotincluded.1.4Thesetestmethodsincludethefollowingsections:SectionScope1ReferencedDocuments2Terminology3SignificanceandUse4Sampling5MeasurementofDimensions6CompressiveStrength7Absorption8SectionCalculations9Report10Keywords11Annexes—TestProceduresConcreteMasonryUnitsAnnexA1ConcreteandCalciumSilicateBrickAnnexA2SegmentalRetainingWallUnitsAnnexA3ConcreteInterlockingPavingUnitsAnnexA4ConcreteGridPavingUnitsAnnexA5ConcreteRoofPaversAnnexA6Dry-CastArticulatingConcreteBlockAnnex...
