calcium aluminate cement for basic formulaons in grey systems · content slide2 3rd november 2016...

CalciumAluminateCement

forBasicFormula3onsinGreySystems

Content

3rdNovember2016 CalucemDays2016-BCFormula:onsinGreySystemsSlide2

►  Introduc:on

►  PartI:CalciumAluminatecementinbasicgreyformula:on–CAmineralcontent►  ISTRA40–ISTRA45–ISTRA50inselflevelingcompound(SLC)

►  PartII:AdvancedCAC40products–improvedgranulometry►  ISTRA40-LUMNITE®SG – LumniteSG2

►  PartIII:Linearlengthchange–SLC´swithadvancedCAC40products

TheTernarySystemCAC-OPC-Sulfate

► EPringiteforma:onrequiresfastavailableCA

► CACKeycomponent► MINERALOGY(CAcontent)► GRANULOMETRY


► Sophis:catedbuildingchemistryproducts► Rapidmortars,Selflevelers,Tileadhesives,Tilegrouts

► Theternarysystemcontrols► Fast&controlledse[ng► Expansioncontrol► Earlystrengthdevelopment

PartI:Basicgreyformula3on–CAmineralcontent

ISTRA40–ISTRA45–ISTRA50inselflevelingcompounds


Characteriza3onofdifferentCAC–chemistry&mineralogy


ISTRA40 ISTRA45 ISTRA50

Chemistry

SiO2 4,2 5,1 4,9

Al2O3 40,6 46,5 51,5

Fe2O3 16,8 7,5 2,2

CaO 36,3 38,0 38,1

Mineralogy

CA 55,2 59,3 65,3

C4AF 14,6 2,4 1,3

C12A7/CA 0,043 0,045 0,045

Granulometry

Blaine(cm²/g) 3390 3560 3520

n 0,77 0,81 0,82

d50(µm) 19,1 17,8 18,4

►  IncreasingAl2O3anddecreasingFe2O3

►  Fe2O3boundinBrownmillerite►  SimilarGranulometry►  IncreasingCA-mineralcontent

Characteriza3onofdifferentCAC–ENmortar


►  ISTRA40hasthehighest6hcompressivestrength►  ISTRA50hatthehighest24hstrength►  CAmineralcontentoppositetostrengthdevelopment

PartI:Basicgreyselflevelingformula3on


►  RecipehasbeenadjustedtoISTRA40:►  Flow:240mm+/-10mm►  Ini3alSet.:30min+/-5

min

►  ISTRA40replacedby:►  ISTRA45►  ISTRA50

►  Performanceevalua3onofdifferentCAC

Binder SLCtestrecipeCAC 20OPCCEMI52,5R 5Ca-Sulfate(α-HH) 5

AggregatesLimestonefiller 28,8Quartzsand 41,3

AdmixturesHydratedLime 1,1LithiumCarbonate 0,03Tartaricacid 0,16SodiumCarbonate 0,20Plas3cizer 0,3Stabilizer 0,07Defoamer 0,14RedispersiblePolymerPowder 1

21%Wateraddedalldatain(%)

PartI:Workability


►  Good5minflowofallcements►  ISTRA45showsflowdecayajer30min►  ISTRA50hasaworkability3meof15min

PartI:Sekng–Exothermalmeasurement


►  Open3medecreasingwithincreasingCAcontent►  Tmaxshijedtoearlier3meswithincreasingCA►  ISTRA50showshighestTmaxwith49°C

PartI:Sekng–Ultrasonicmeasurement


►  ISTRA40hasthelongestopen3me►  Finalsetofallformula3onsajerapprox.1h►  ISTRA50highestvelocityajer24h

PartI:Compressivestrength


►  CAcontentcontributestoearlyEnringitforma3on►  4hCompressivestrengthincreaseswithincreasingCA►  28dstrengthlimitedbythesulfateavailability

PartI:Conclusions–CAmineralcontent

Selflevelingformula3onISTRA40–ISTRA45–ISTRA50withsimilarGranulometrie,BlaineandC12A7►  StrengthperformanceinENmortariscontrarioustoselflevelingformula3on►  CAcontentcontributestoearlyEnringitforma3on

►  4hstrengthincreaseswithincreasingCA–fasterEnringiteforma3on

►  Sulfatecontentandavailabilitylimitsfurtherstrengthdevelopment


PartII:AdvancedCAC40products–improvedgranulometry


PartII:AdvancedCAC40products–improvedgranulometry


►  Similarchemistryandmineralogy►  IncreasingBlainefineness►  Increasingn-slopeofthePSD

ISTRA40 LUMNITE®SG LumniteSG2

Chemistry

SiO2 4,9 4,6 4,7

Al2O3 40,3 40,1 40,6

Fe2O3 15,0 15,8 15,1

CaO 36,9 36,6 37,4

Mineralogy

CA 55,9 53,5 54,5

C4AF 12,9 13,4 14,2

C12A7/CA 0,043 0,050 0,046

Granulometry

Blaine(cm²/g) 3400 4030 5460

n 0,75 0,87 1,06

d50(µm) 20,6 11,5 7,7

PartII:CalucemCAC40-Formula3ons


►  DecreaseoftheCACamount

withincreasingtheBlaine

►  BalancedbyQuartzsand

►  Allrecipeshavebeenadjustedto:►  Flow:240mm+/-10mm►  Ini3alSet.:30min+/-5

min

Binder ISTRA40 LUMNITE®SG LumniteSG2CAC 20 18 16OPCCEMI52,5R 5 5 5Ca-Sulfate(α-HH) 5 5 5

AggregatesLimestonefiller 28,8 28,8 28,8Quartzsand 41,3 43,2 45,2

AdmixturesHydratedLime 1,1 0,9 0,9LithiumCarbonate 0,03 0,10 0,10Tartaricacid 0,16 0,12 0,12SodiumCarbonate 0,20 0,28 0,28Plas3cizer 0,3 0,3 0,3Stabilizer 0,07 0,07 0,07Defoamer 0,14 0,14 0,14RedispersiblePolymerPowder 1 1 1

21%Wateraddedalldatain%

PartII:Workability


►  Good5minflowofallSLC´s►  ISTRA40showscon3nuousflowdecayun3l30min►  LUMNINTESGandLumniteSG2havebothstableflow

PartII:Sekng–Exothermalmeasurement


►  ISTRA40reachesTmaxat240min►  LUMNITESGandLumniteSG2reachTmaxajer120min►  LumniteSG2hasthehighestTmaxof55°CofallSLC´s

PartII:Sekng–Ultrasonicmeasurement


►  Homogeneoushardeningreac3onofallsamples►  Open3me>30minforallsamples►  Finalsetajer40minforLUMNITESGandLumniteSG2

PartII:Compressivestrength


► LUMNITESGhas33meshigher4hstrengththanISTRA40► 28dstrengthapprox.10%increasedwithop3mizedcements► Sameperformancewith10–20%lessCACdosage

PartII:Conclusions–improvedgranulometry


►  Steepergranulometryslopeandhigherfinenessac3vatesCA

►  Improvesflowabilityandhighearlyandhighfinalstrength

►  Atleast10%dosagesavingwithands3llhighperformance

PartIII:Linearlengthchange-SLC´swithadvancedCAC40

ISTRA40–LUMNITE®SG–LumniteSG2


PartIII:Overview

►  Availablelengthchangemeasurementmethods

►  Earlylengthchangeanddryingonathinlayer@rh50%;T:20°C►  Lengthchangezero@240min

►  Linearlengthchangemethodcomparison►  4x4x16and1x4x16and2,5x2,5x28,5cm3prisms

►  LinearlengthchangecomparisoninSLC´scontaining ►  20%ISTRA40►  18%LUMNITE®SG►  16%LumniteSG2

►  Conclusions


PartIII:LinearChange–DifferentMethods

PrismsaccordingtoStandard:(1)  ASTM–C490:25x25x285mm³(2)  EN–13872:40x40x160mm³(3)  EN–13872:10x40x160mm³(thicknesslessthan10mm)


Thin-Layer Shrinkage Prisms Shrinkage

Thin-Layershrinkage:►  Thickness:~5mm►  Size:200mmx280mm►  Advantage:

► Measurementofearlydeforma3on► Determina3onofthemassloss

1 2 3

PartIII:Earlylengthchange


RefA

PartIII:Earlylengthchange


►  AllSLC´sshowshrinkageduringthefirst2,5days►  ISTRA40andLUMNITESGshowmax.-1,2mm/m►  LumniteSG2hasalengthchangeof-0,8mm/m

PartIII:Earlydrying


►  AllSLC´sshowqualita3velysimilarlossofwaterover6days►  Ca.30%waterisevaporatedduringthefirstday►  Ca.47%waterisevaporatedajer6days

PartIII:Lengthchange-Methodcomparison


►  4x4:Slowestdrying–constantmassajer28d►  1x2,5x2,5:Averagedrying3me-24d,highestshrinkage►  1x4:Fastestdrying-14d,similarshrinkageas4x4prism

PartIII:Lengthchange–DifferentSLC-1x4x16cm3


►  BothIstra40typesshow-0,4mm/mshrinkageajer28days►  LUMNITESGshows-0,2mm/mshrinkage►  LumniteSG2haslowestremainingmass

PartIII:Lengthchange–DifferentSLC-2,5x2,5x28,5cm3


►  Qualita3velysimilardryingbehaviorofallsamples►  LumniteSG2haslowestremainingmass►  Allsamplesreachasimilarshrinkageajer28d

PartIII:LinearChange–Conclusion

►  Upto47%waterisevaporatedfromthinlayerduringthefirst6days

►  Dryingdependsstronglyonthespecimensize►  1x4x16cm3showsfastestdrying►  2,5x2,5x28,5cm3prismmediumdrying►  4x4x16cm3prismneedsthelongest3meforreachingconstantweight

►  Shrinkage►  5mmthin-layershowsthehighestearlyshrinkage►  2,5x2,5cm3showthehighestshrinkagevalues►  1x4x16cm3yieldthelowestshrinkagevalues

►  LUMNITE®SGshowsbestshrinkagebehaviorinthe1x4x16cm3prisms


ThankyouforyouraPen:on

All the information provided is in accordance with the present state of our knowledge. It is based on our laboratory experience using raw materials indicated in the presentation. Nonetheless, we disclaim any warranty or liability for the data and formulations presented.

calcium aluminate cement for basic formulaons in grey systems · content slide2 3rd november 2016...

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