Designation:C1123/C1123M−90(Reapproved2015)StandardTestMethodforCompressibilityandRecoveryofAsbestos1ThisstandardisissuedunderthefixeddesignationC1123/C1123M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthebulkingfactorofspinninggradefiber.Theseincludegrade4Aandlonger.21.2Resultsobtainedonothergradesmaybeconsideredasanevaluationoftheirbulkfiberresilience.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Warning—Breathingofasbestosdustishazardous.Asbestosandasbestosproductspresentdemonstratedhealthrisksforusersandforthosewithwhomtheycomeintocontact.Inadditiontootherprecautions,whenworkingwithasbestos-cementproducts,minimizethedustthatresults.Forinforma-tiononthesafeuseofchrysoltileasbestos,referto“SafeUseofChrysotileAsbestos:AManualonPreventiveandControlMeasures.”31.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardwarning,see1.4.2.ReferencedDocuments2.1ASTMStandards:4D2590TestMethodforSamplingChrysotileAsbestosD2946TerminologyforAsbestosandAsbestos–CementProductsD3879TestMethodforSamplingAmphiboleAsbestos(Withdrawn2009)5E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethods3.Terminology3.1Definitions:TermsrelatingtoasbestosarefoundinTerminologyD2946.4.SummaryofTestMethod4.1Theheightofaweighedspecimenobtainedincompli-ancewithsamplingTestMethodsD2590orD3879isdeter-minedunderaheav...
