讲义说明26微珠-6.ultra pozz presentation

UltraPozzAnewpozzolanicadditivePowerstationsFlyashSeparationSurfacemodification

1.Description

1.Description

2.ComparisonCharacteristicsFlyashSlagUltraPozzSilicaFumeParticlesize/mm82021ShapeAlmostglobalshapeMoreedgesGlobalshapeGlobalshapeFillingabilityOrdinaryBadGoodGoodWaterreducingrateGoodBadExcellentBadWorkabilityGoodGoodExcellentBadActivityBadGoodGoodExcellentAnti-crackingabilityOrdinaryOrdinaryGoodOrdinary

3.Workability

4.Strength

5.ChlorideIonPermeability

6.Sulfate

ErosionTypicalChemicalAnalysis

%SiO256.5CaO4.8MgO1.3Al2O326.5Fe2O35.3Na2O1.4K2O3.28SO30.65Carboncontent<1PhysicalcharacteristicsLOI2%ParticleshapesphericalSpecificdensity2.53g/cm³ColorgreyMoisturecontent≤1%Waterdemand95%Particlesizedistributiond10≤2μmd50≤5μmd90≤50μm

7.Specification

8.ParticleSizeDistribution

9.PowderParticlePacking

10.WaterAbsorption

11.PasteViscosity

12.HydrationexothermSilicafume10%UltraPozz30%UltraPozz30%Flyash

13.BoralTestReportPhysicalcharacteristicsBulkdensity680kg/m3Lossonignition0.3%Specificdensity2.58g/cm³Finenesspassing45umsieve85%Moisturecontent0.1%Relativestrength7days(accelerated)145%28days(standard)128%ChemicalAnalysis

%SiO257.1Na2O0.06K2O0.19SO3<0.1Carboncontent0.004

13.ConcreteTestReport

13.ConcreteTestReport

13.UtilitiesHighflowability,pumpingconcrete.Erosionresistance,durableconcrete.Sprayconcreteandmortar.Non-autoclavedPHCpipepiles.pactingconcrete.Optimizethefineparticlesgrading.Highactivityindex.SpecialthixotropicaffectionReducetheviscosityoffreshconcrete.14.ApplicationinGeopolymerconcreteMostflyasheshavehighinter-particlevolume(IPV)AddingUltraPozz,by5-20%,willsignificantlyreduceIPV,consequentlytheliquidrequirementItisexpectedthatthestrengthcanbeincreasedby>30%Thelowerporosityofgeopolymerwillalsogeneratehighdurability,duetolowpermeability15.OtherResearchandDevelopmentWearelookingatsuperplasticersforhighpHandhighviscositysystemnaphthalene-basedsuperplasticizerhasbeentestedandproveneffective

WearelookingatchemicalstoreduceandeliminateefflorescenceproblemsChemicalswithmorereactiveelementsandfunctionalgroupsthatcanbufferthealkalileachingandinhibittheprecipitationofcarbona