Measuring the Size and Shape of Building Materials

transcript

Measuring the Particle Size and Shape of Building Materials

Ian Treviranusian.treviranus@horiba.comwww.horiba.com/us/particle

What we’ll talk about

Measurement technologies

Application data

Technologies in this Webinar

LA-950Laser Diffraction

SZ-100Dynamic Light Scattering & Zeta Potential

CAMSIZER & CAMSIZER XTDynamic Image Analysis

PSA300Static Image Analysis

SA-9600Flowing Gas BET Surface Area

LA-950: Laser Diffraction

Particle size performance leaderNinth generationUltra durableLowest total cost of ownershipSuspension, emulsion, powder,

paste, gel10 nanometer – 3 mm

Dynamic Range 0.01 – 3000 µmWidest wet measurement rangeOnly system to measure 30 nm!

30 nm silica 40 nm latex

Superior Dry Powder Feeder

Direct flow ofpowder down tocell rather thanturn 90o, thenaround plastic tube, no densityrestriction likehorizontal units, zero impact surfaces meansgood dispersionw/o comminution

Webinar TE016: Optimizing Dry Powder Measurements

Superior Dry Powder Feeder

Automatic control of sample feed rateLA-950 monitors amount of sample

supplied by the vibratory feeder. Automatic feed back control keeps constant mass flow rate of powder during measurementThis is CRITICAL

– More reproducible, robust– No ghost peaks– No cutting off results– Fewer headaches!

Unique to HORIBA

CAMSIZER Series: Image Analysis

High resolution size & shape Intelligent sieve correlationPatented dual captureCAMSIZER 30 micron – 30 millimeterCAMSIZER XT 1 micron – 3 millimeter

Advantage of Image Analysis

More Detailed Size Analysis due to Understanding of Particle Shape:Length, Width, Average Diameter

Shape Analysis

SPHT0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.90

Q3 [%]

Pharma-Product-1-30kPa-bonne-forme-_xc_min_009.rdfPharma-Product-1-30kPa_Vitesse-Adaption_xc_min_008.rdflactose-30kPa_xFemax_003.rdfPharma-Product-2-460_xc_min_008.rdf

Equivalent spherical diameter

Perimeter

Longest diameter

Shortest daimeter

b/l0.4 0.5 0.6 0.7 0.80

Q3 [%]

Pharma-Product-1-30kPa-bonne-forme-_xc_min_009.rdfPharma-Product-1-30kPa_Vitesse-Adaption_xc_min_008.rdflactose-30kPa_xFemax_003.rdfPharma-Product-2-460_xc_min_008.rdf

Application data

Applications in this Webinar

CementConcreteLimestone/GCC/PCC/DolomiteGypsum

There are MANY others, but only so much time…

General Importance for Powders

Powder flowParticle size, Particle shape

Dust hazard/nuisanceParticle size

DissolutionParticle size, Surface area

ReactivityParticle size, Particle shape, Surface area

Portland Cement

Most common cementParticle size affects rate of hydration

(1 um ~ 1 day, 10 um ~ 1 month)Set too fast, set too slowFast expansion, poor strength

Monitor size to control grinding processHistorically measured using sieves and

Blaine valuesMisleading

Portland Cement

Most common cementParticle size affects rate of hydration

(1 um ~ 1 day, 10 um ~ 1 month)Set too fast, set too slowFast expansion, poor strength

Monitor size to control grinding processHistorically measured using sieves and

Blaine valuesMisleading

NIST SRM 114q

Portland Cement on the LA-950

Cement Replacements

Raw material cost and/or “green” costsFly ashSlag (GGBS)

*Housing and Building National Research Center, Egypt

Cement Replacements

Fly ash overlay with Portland cement using LA-950 PowderJet dry feeder

Concrete

Generally: cement + aggregate + waterSize of cement affects hydrationSize and shape of aggregate affects

workability, compressibilityCommonly use admixtures to control

propertiesPlasticizersPigmentsAccelerate/retard hydrationFumed silica

Aggregate on the CAMSIZER

Calcium Carbonate

Comes in two varietiesGround CaCO3

– Typically broader size distributions– Irregular particle shape

Precipitated CaCO3

– Can be narrow distributions– Can produce any of several morphologies

Size, color, and chemical composition determine applicationRoofing, Stucco, Grout, Masonry blocks

GCC on the LA-950

Dolomite

Similar to limestone in useMany different grades

Dolomite

Shape data for same six grades

Gypsum

Gypsum board/drywall, plaster, cementRecovered from flue-gas, variable sizeNaturally occurring typically finer

Application data

For More Details

Visit http://www.horiba.com/particle

Contact us directly at labinfo@horiba.com

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Gracias

Большое спасибо

GrazieاُشْكرΣας ευχαριστούμε

감사합니다 Obrigado

Tacka dig

谢谢ขอบคุณครบั

ありがとうございました

धन्यवादநன்ற

Measuring the Size and Shape of Building Materials

Technology