Designation:C1228−96(Reapproved2015)StandardPracticeforPreparingCouponsforFlexuralandWashoutTestsonGlassFiberReinforcedConcrete1ThisstandardisissuedunderthefixeddesignationC1228;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverspreparationoftestcouponstobeusedintestsofplantmanufacturedthin-sectionglassfiberreinforcedconcrete(GFRC).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C947TestMethodforFlexuralPropertiesofThin-SectionGlass-Fiber-ReinforcedConcrete(UsingSimpleBeamWithThird-PointLoading)C1229TestMethodforDeterminationofGlassFiberCon-tentinGlassFiberReinforcedConcrete(GFRC)(Wash-OutTest)3.SignificanceandUse3.1Flexuralstrengths,asdeterminedbyTestMethodC947,areusedforqualitycontrolanddesignofGFRCproductsandmaybeusedtoverifycompliancewithspecificationsandtocollectdatainresearchanddevelopmentprograms.Itis,therefore,importantthatcouponsbepreparedaccordingtoastandardpractice.ThecouponsareusedtomaketestspecimensforTestMethodC947andforTestMethodC1229todeterminetheamountofglassfiberreinforcementperunitvolumeofGFRCforqualitycontrolpurposes.4.Apparatus4.1Form—Theformshallberectangularinshape;madefromwood,fiberglassreinforcedplastic(FRP),GFRC,orsteelwithdimensionsof1⁄2in.(13mm)deepby18in.(450mm)wideand48in.(1200mm)long.4.2SteelTrowel,atleast20in.(500mm)long.4.3SerratedRoller,withhandle.4.4Strike-OffBar(screed),atleast20in.(500...
