16
1 Producing Sealing Aggregates to Optimise Performance on Spray Sealed Pavements Engineering Businesses to Drive Operations Excellence 1996 - today November 2015

Andrew Wachtels presentation on sealing aggregates and precoating November 201

Embed Size (px)

Citation preview

Page 1: 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

mb

er 2

01

5

Page 2: Andrew Wachtels presentation on sealing aggregates and precoating November 201

2

What is a good or acceptable sealing aggregateA

gg

re

gate

p

ro

pe

rtie

s

Grading

Fines

Flakiness

Los

Angeles

PSV/PAFV

Page 3: Andrew Wachtels presentation on sealing aggregates and precoating November 201

3

Sh

ap

e o

f a

gg

re

gate

s

Why are river

gravel rocks

round ?

Why are

crushed rocks

cubic and non

cubic

Page 4: Andrew Wachtels presentation on sealing aggregates and precoating November 201

4

Sh

ap

e o

f a

gg

re

gate

sWhy is ALD important in

sealing aggregates ?

Page 5: Andrew Wachtels presentation on sealing aggregates and precoating November 201

5

Size

o

f a

gg

re

gate

sNominal Sizes

14mm

10mm

7mm

5mm

Page 6: Andrew Wachtels presentation on sealing aggregates and precoating November 201

6

Ag

gre

gate

s p

ro

pe

rtie

sHow do you pre coat aggregates

Is dust on a conforming aggregate good or bad ?

Page 7: Andrew Wachtels presentation on sealing aggregates and precoating November 201

7

Wa

sh

in

g a

gg

re

gate

s

Wash screen

Page 8: Andrew Wachtels presentation on sealing aggregates and precoating November 201

8

Pre

c

oatin

g P

ro

ce

ss

Washed Aggregate to be pre coated

Page 9: Andrew Wachtels presentation on sealing aggregates and precoating November 201

9

Pre

c

oatin

g P

ro

ce

ss

Page 10: Andrew Wachtels presentation on sealing aggregates and precoating November 201

10

Pre

c

oatin

g P

ro

ce

ss

Page 11: Andrew Wachtels presentation on sealing aggregates and precoating November 201

11

Pre

c

oatin

g P

ro

ce

ss

Page 12: Andrew Wachtels presentation on sealing aggregates and precoating November 201

12

Pre

c

oatin

g P

ro

ce

ss

Page 13: Andrew Wachtels presentation on sealing aggregates and precoating November 201

13

Pre

c

oatin

g P

ro

ce

ss

Page 14: Andrew Wachtels presentation on sealing aggregates and precoating November 201

14

Pre

c

oatin

g P

ro

ce

ss

Page 15: Andrew Wachtels presentation on sealing aggregates and precoating November 201

15

Pre

c

oatin

g P

ro

ce

ss

Page 16: Andrew Wachtels presentation on sealing aggregates and precoating November 201

16

Qu

estio

ns

thank you for your time