particle size and shape measurement for building materials
DESCRIPTION
Ian Treviranus from HORIBA Scientific discusses several technologies used to measure the particle size and shape of various building materials. Case studies are provided for cement, concrete, gypsum, calcium carbonate, and others.TRANSCRIPT
© 2012 HORIBA, Ltd. All rights reserved.
Measuring the Particle Size and Shape of Building Materials
Ian [email protected]/us/particle
© 2012 HORIBA, Ltd. All rights reserved.
What we’ll talk about
Measurement technologies
Application data
Q&A
© 2012 HORIBA, Ltd. All rights reserved.
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
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LA-950: Laser Diffraction
Particle size performance leaderNinth generationUltra durableLowest total cost of ownershipSuspension, emulsion, powder,
paste, gel10 nanometer – 3 mm
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Dynamic Range 0.01 – 3000 µmWidest wet measurement rangeOnly system to measure 30 nm!
30 nm silica 40 nm latex
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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
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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
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CAMSIZER Series: Image Analysis
High resolution size & shape Intelligent sieve correlationPatented dual captureCAMSIZER 30 micron – 30 millimeterCAMSIZER XT 1 micron – 3 millimeter
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Advantage of Image Analysis
More Detailed Size Analysis due to Understanding of Particle Shape:Length, Width, Average Diameter
© 2012 HORIBA, Ltd. All rights reserved.
Shape Analysis
2
4P
ASPHT
max
min
Fe
c
xx
lw
lb
SPHT0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.90
10
20
30
40
50
60
70
80
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
Area
b/l0.4 0.5 0.6 0.7 0.80
10
20
30
40
50
60
70
80
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
© 2012 HORIBA, Ltd. All rights reserved.
What we’ll talk about
Measurement technologies
Application data
Q&A
© 2012 HORIBA, Ltd. All rights reserved.
Applications in this Webinar
CementConcreteLimestone/GCC/PCC/DolomiteGypsum
There are MANY others, but only so much time…
© 2012 HORIBA, Ltd. All rights reserved.
General Importance for Powders
Powder flowParticle size, Particle shape
Dust hazard/nuisanceParticle size
DissolutionParticle size, Surface area
ReactivityParticle size, Particle shape, Surface area
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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
© 2012 HORIBA, Ltd. All rights reserved.
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
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NIST SRM 114q
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Portland Cement on the LA-950
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Cement Replacements
Raw material cost and/or “green” costsFly ashSlag (GGBS)
*Housing and Building National Research Center, Egypt
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Cement Replacements
Fly ash overlay with Portland cement using LA-950 PowderJet dry feeder
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Concrete
Generally: cement + aggregate + waterSize of cement affects hydrationSize and shape of aggregate affects
workability, compressibilityCommonly use admixtures to control
propertiesPlasticizersPigmentsAccelerate/retard hydrationFumed silica
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Aggregate on the CAMSIZER
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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
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GCC on the LA-950
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Dolomite
Similar to limestone in useMany different grades
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Dolomite
Shape data for same six grades
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Gypsum
Gypsum board/drywall, plaster, cementRecovered from flue-gas, variable sizeNaturally occurring typically finer
© 2012 HORIBA, Ltd. All rights reserved.
What we’ll talk about
Measurement technologies
Application data
Q&A
© 2012 HORIBA, Ltd. All rights reserved.
For More Details
Visit http://www.horiba.com/particle
Contact us directly at [email protected]
Visit the Download Center to find this recorded presentation and many more on other topics
© 2012 HORIBA, Ltd. All rights reserved.
Danke
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