Designation:C1688/C1688M−14aStandardTestMethodforDensityandVoidContentofFreshlyMixedPerviousConcrete1ThisstandardisissuedunderthefixeddesignationC1688/C1688M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversdeterminingthedensityoffreshlymixedperviousconcreteunderstandardizedconditionsandgivesformulasforcalculatingthevoidcontentofperviousconcrete.Testresultsarenotintendedtorepresentthein-placedensityandvoidcontent.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.(Warning—Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.2)1.4Thetextofthistestmethodreferencesnotesandfootnotesthatprovideexplanatoryinformation.Thesenotesandfootnotes(excludingthoseintables)shallnotbeconsid-eredasrequirementsofthistestmethod.2.ReferencedDocuments2.1ASTMStandards:3C29/C29MTestMethodforBulkDensity(“UnitWeight”)andVoidsinAggregateC125TerminologyRelatingtoConcreteandConcreteAg-gregatesC127TestMethodforDensity,RelativeDensity(SpecificGravity),andAbsorptionofCoarseAggregateC128TestMethodforDensity,RelativeDensity(SpecificGravity),andAbsorptionofFineAggregateC150/C150MSpecificationforPortlandCementC172/C172MPracticeforSamplingFreshlyMixedCon-creteC188TestMethodforDensityofHydraulicCementC192/C192MPracticeforMakingandCuringConcreteTestSpecimensintheL...
