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LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR...

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Page 1: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux
Page 2: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

LOW ENERGY ASPHALTS LEA ® FOR

SUSTAINABLE ROAD CONSTRUCTION

Olard (presenting author), Beduneau, Fallone

EIFFAGE Travaux Publics , FRANCE

PAPER 142

Miranda Perez

EIFFAGE Infraestructuras , SPAIN

Page 3: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Energetic & environmental stakes

°C kgFuel/T

Hot Mix

HEATING20

15

kgCO2 /T

20 40 60 80 100 120 140 160 180

7

6

5

L Fuel/T

Cold MixAsphalt

Warm Mix Asphalt

Hot Mix Asphalt

VAPORIZATION

DRYINGHalf-WarmMix Asphalt

15

10

5

0

5

4

3

2

1

0

HWMA_LEA ® mixes(50% energy savings)

Page 4: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Traditional HMA productionTotal drying

180°CCoating160°C

Stockage150°C

Application130-140°C

filler bitumen160°C160°C

LEA® process (90°C, covered by 3 patents)� matching any asphalt plant configuration

� enabling energy savings up to 50% (≈3Lfuel/ton of mix)

� enabling a reduction in CO2 emissions to the same extent

(≈9kg CO2 / ton of mix)

Page 5: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux
Page 6: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Below 100°C, the residual humidity of aggregates makes the bitumen foam

Page 7: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Production on traditional plants

Example of drum mix plant

Page 8: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Key figures

350 road works400 000 tons

Pure & SBS modified binders

France: 30 LEA plantsSpain: 4 LEA plantsPortugal : 1 LEA plantUSA: 3 LEA plantsNew Zealand: 2 LEA plants

Page 9: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Lab evaluation of LEA® performances

- Workability: Nynas workability tester

- Water resistance: Duriez test

Preliminaryselection

optimization

- Compacting ability: Gyratory shear compactor

- Resistance to rutting at 60°C: Wheel tracking test

- Complex modulus test on field cores: IDT

- Fatigue test (optional )

Page 10: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Factorial Experimental Design : Optimization of the moisture resistance i/C

Page 11: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Bitumen aging: Pen after recovery

42

40

45

50

Pen

etra

tion

(1/1

0 m

m)

[Gaudefroy et al., ISAP 08]

Slight aging in the case of LEAs

27

33

35

31 31

20

25

30

35

40

Pen

etra

tion

(1/1

0 m

m)

Fresh bitumen HMA LEA1+A1 LEA2+A1 LEA3+A1 LEA3+A2

Page 12: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Effect of manufacturing process on Emission Potential

Lower Emissions in the case of LEAs

TOC(e) and Emission Potential are lower in the case of HWMAs

Page 13: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Correlation between aging & fume emissions[Gaudefroy et al., ISAP 08]

34

36

38

Pen

etra

tion

(1/1

0mm

)

58

59

60

61

Rin

g an

d B

all T

empe

ratu

re (

°C)

24

26

28

30

32

50 100 150 200 250 300 350 400

Emission Potential (103.mg.s/m3/kg of bitumen)

Pen

etra

tion

(1/1

0mm

)

53

54

55

56

57

58

Rin

g an

d B

all T

empe

ratu

re (

°C)

LEA3

LEA2 LEA1

HMA

Page 14: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Some of our past LEA

road works…road works…

Page 15: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Aerodrome near Béziers (4000T)

Page 16: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

AREA Highway A41: Test section 2007(700T with PMB’s)

Page 17: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

4000-ton roadwork near Toulouse with up to 50% RAP

⇒ RAP capability

Page 18: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Fumes are overwhelmingly reduced at laydown

What did we learn on the field ?

NY State (USA)

Page 19: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Quick turnover to traffic

What did we learn on the field ?

Page 20: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Less soiling of equipment (plant, truck, paver, shovel)

⇒ reduced use of solvents

What did we learn on the field ?

Page 21: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Improvement of working conditions for workersLess embarrassment for residents as well

What did we learn on the field ?

Page 22: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Conclusions & ProspectsProspects

- Innovative LEA technology + at intermediate temperatures between the current

cold mix and hot mix asphalt techniques+ up to 50% energy savings+ up to 50% energy savings+ with the performance of HMAs

- 400,000 tons since 2005 with either low or high traffic

- Implementation of the process in other countries(validity with other materials, climates & mix design methods)

Page 23: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Thank you for your attention !

http://www.leahttp://www.lea --co.comco.com

Page 24: LOW ENERGY ASPHALTS LEA SUSTAINABLE ROAD CONSTRUCTION … · LOW ENERGY ASPHALTS LEA® FOR SUSTAINABLE ROAD CONSTRUCTION Olard (presenting author), Beduneau, Fallone EIFFAGE Travaux

Touching is believing….65oC


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