Designation:D7072−04(Reapproved2013)StandardPracticeforEvaluatingAcceleratedEfflorescenceofLatexCoatings1ThisstandardisissuedunderthefixeddesignationD7072;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstheevaluationofthedegreetowhichalatexpaintresiststheformationofefflorescenceandalkaliburnoutontheexposedpaintsurface.1.2Thispracticeisdesignedprimarilytorelateefflores-cenceoriginatinginthesubstratetothedepositappearingonthesurfaceoflatexpaints.Thispracticerelateschieflytothepaintingofmasonry-typesubstratessuchasconcreteblock,brick,mortar,stucco,pouredconcreteandsimilarmaterials.1.3ThevaluesinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesisareforinformationonly.1.4Thismethoddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityofwhoeverusesthisstandardtoconsultandestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1475TestMethodForDensityofLiquidCoatings,Inks,andRelatedProductsD1734PracticeforMakingCementitiousPanelsforTestingCoatingsD4585PracticeforTestingWaterResistanceofCoatingsUsingControlledCondensationD5068PracticeforPreparationofPaintBrushesforEvalu-ation3.Terminology(SpecifictothisPractice)3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1efflorescence,n—thedepositionofsolublesaltsontheexposedpaintsurface.Efflorescenceischaracterizedbyalightcolored,nonuniform,powderyincrustationwhichdetractsfromthepaintfilmappearance.Thediscolorationoccurswhensolublesaltsinthesubstrateorpaintmigratetothesurfacebytheleachingandevaporatingactionofthewatercarrier.Theefflorescenceoriginatingwithinthesubstrateisthatwithwhichthismethodisconcerned.3.1.2alkaliburnout,n—theprematurefadingordecompo-sition...
