Designation:C150/C150M−17StandardSpecificationforPortlandCement1ThisstandardisissuedunderthefixeddesignationC150/C150M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoverstentypesofportlandcement,asfollows(seeNote2):1.1.1TypeI—Forusewhenthespecialpropertiesspecifiedforanyothertypearenotrequired.1.1.2TypeIA—Air-entrainingcementforthesameusesasTypeI,whereair-entrainmentisdesired.1.1.3TypeII—Forgeneraluse,moreespeciallywhenmod-eratesulfateresistanceisdesired.1.1.4TypeIIA—Air-entrainingcementforthesameusesasTypeII,whereair-entrainmentisdesired.1.1.5TypeII(MH)—Forgeneraluse,moreespeciallywhenmoderateheatofhydrationandmoderatesulfateresistancearedesired.1.1.6TypeII(MH)A—Air-entrainingcementforthesameusesasTypeII(MH),whereair-entrainmentisdesired.1.1.7TypeIII—Forusewhenhighearlystrengthisdesired.1.1.8TypeIIIA—Air-entrainingcementforthesameuseasTypeIII,whereair-entrainmentisdesired.1.1.9TypeIV—Forusewhenalowheatofhydrationisdesired.1.1.10TypeV—Forusewhenhighsulfateresistanceisdesired.NOTE1—Somecementsaredesignatedwithacombinedtypeclassification,suchasTypeI/II,indicatingthatthecementmeetstherequirementsoftheindicatedtypesandisbeingofferedassuitableforusewheneithertypeisdesired.NOTE2—Cementconformingtotherequirementsforalltypesarenotcarriedinstockinsomeareas.InadvanceofspecifyingtheuseofcementotherthanTypeI,determinewhethertheproposedtypeofcementis,orcanbemade,available.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.ValuesinSIunits[orinch-poundunits]shallbeobtainedbymeasurementinSIunits[orinch-poundunits]orbya...
