Designation:D4260−05(Reapproved2017)StandardPracticeforLiquidandGelledAcidEtchingofConcrete1ThisstandardisissuedunderthefixeddesignationD4260;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverssurfacepreparationofconcretetopreparethesurfacepriortotheapplicationofcoatings.1.2Thispracticeisintendedtoalterthesurfaceprofileoftheconcreteandtoremoveforeignmaterialsandweaksurfacelaitance.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection6.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D4258PracticeforSurfaceCleaningConcreteforCoatingD4259PracticeforAbradingConcreteD4262TestMethodforpHofChemicallyCleanedorEtchedConcreteSurfacesD4263TestMethodforIndicatingMoistureinConcretebythePlasticSheetMethodD4541TestMethodforPull-OffStrengthofCoatingsUsingPortableAdhesionTesters2.2OtherStandard:ACI-308GuidetoCuringConcrete33.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1gelledacid,n—acidsolutionprimarilyintendedforuseonhorizontal,vertical,andoverheadsurfaces.3.1.2liquidacid,n—acidsolutionprimarilyintendedforuseonhorizontalsurfaces.4.SummaryofPractice4.1Thispracticeisintendedtoprovideaclean,contamination-free,androughenedsurface.4.2Acceptablesurfacesshallbefreeoflaitance,formreleaseagents,curingagents,oil,grease,andotherpenetr...
