Andrew Wachtels presentation on sealing aggregates and precoating November 201

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Transcript of Andrew Wachtels presentation on sealing aggregates and precoating November 201

1

Producing Sealing Aggregates to

Optimise Performance on Spray Sealed Pavements

Engineering Businesses to Drive Operations Excellence

1996 - today

Nove

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What is a good or acceptable sealing aggregateA

gg

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gate

p

ro

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Grading

Fines

Flakiness

Los

Angeles

PSV/PAFV

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Sh

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e o

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gate

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Why are river

gravel rocks

round ?

Why are

crushed rocks

cubic and non

cubic

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Sh

ap

e o

f a

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re

gate

sWhy is ALD important in

sealing aggregates ?

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Size

o

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sNominal Sizes

14mm

10mm

7mm

5mm

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Ag

gre

gate

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ro

pe

rtie

sHow do you pre coat aggregates

Is dust on a conforming aggregate good or bad ?

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Wa

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Wash screen

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Pre

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Washed Aggregate to be pre coated

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Pre

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Pre

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Pre

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Pre

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Pre

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Pre

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Qu

estio

ns

thank you for your time