innovation : nanostructured bitumen · 2018-04-05 · water penetration in asphalt mix ... 100 102...

INNOVATION : NANOSTRUCTURED BITUMEN

ITS international Sep/Oct 15

Innnovation in many cases is a linear combination of elements we alredy have


Production

1. Standard process

wet)

2. Hybrid process

3. Dry process

(powder,

pellets,..)

Technology

1. Standard process

(Cross linking)

2. Hybrid

3. Chemical

additives

Enviroment

1. Long Life

pavement

2. Crumb rubber

3. Other additives

Where can we innovate in Asphalt products?Different areas

Today 2; Chemical Additives to achieve long life pavement


FIRST ENVIRONMENTAL PAVEMENT IS A LONG LIFE PAVEMENT, A DIAMOND FOR THE ROADS

http://www.bing.com/images/search?q=dibujo+diamante&view=detailv2&&id=B945FA0393BC357646E3F1EB3385CE678F110A9D&selectedIndex=55&ccid=5z+NxTql&simid=608020589578552466&thid=OIP.Me73f8dc53aa5e1aa6ee4104f03bb24c5H0


Ditecpesa profile

https://www.youtube.com/watch?v=noOFgKVKp3U


QUESTION:

WHAT IS ONE OF THE MAIN ENEMIES OF THE ROAD?


WATER, WATER AND WATER.

WATER PENETRATION IN ASPHALT MIX CHEMICAL ATTACK; RAIN, ICE, SNOW AND WORST + SALT TO ELIMINATE

SNOW DRAINABILITY OF BASE COURSE

SO LETS GO TO WORK ON IT.


• When snow and salt had been spreaded, the pavement is plenty of detached aggregates.ICE

High salt concentration

Snowplows which have blades.

Water resistance

• It is demonstrated that the effect of spread salt on the pavements is very negative.

@jjavier_garciap / @Leticia_ParraR


• The water effect and more if the effect is made by water with salt, produce the lack of cohesion between bitumen and aggregates.

Result: aggregates stripped around the pavements.

Source: Ferrovial Highways, Burgos, Spain.



• It is neccessary to improve thebitumen-aggregate bonds

• A physical mix achieved bytemperature and mechanicenergy, due to bitumen andaggregates do not work well.

Source: Ferrovial, London, UK.



Conventional Bitumen

Nanostructured Bitumen

Submit deeply by the water action pavement specimens



What have we improved?



✓Salt attack ✓Water attack ✓Ice attack

Source: Ferrovial Highways – 407 ETR, Toronto, Canada




TODAY MAIN IDEA:“innovation is like the branch of a tree, at the beginning you are looking for

something but while you are working you find new innovations”


• SO, working on water resitance we found new improvements

• The better interaction between aggregate – bitumen, the better compaction.

✓ Higher density

✓ Lower period of time, to achieve the optimun density

Source: Ferrovial – Amey, UK



• Helps compacting in cold weather conditions and improving asphalt properties.

• Same quality and way of working as with conventional bitumen.

• Improved properties:✓Cohesion✓Adhesion✓Better workeability✓Better Immerson – Compresion Test results (ASTM D1075)✓Better Boiling Water Test results (ASTM D3625)



✓Boiling test (ASTM D3625)• AC16Surf 50/70S

Conventional Bitumen Nanostructured Bitumen



✓Boiling test (ASTM D3625)• BBTM11B PMB 45/80-60

Conventional Bitumen Nanostructured Bitumen



• Help in Challenges:

✓Transport to projects: Distances are very important, with this bitumen ispossible to cover longer distances or manufacture at lower temperatures withsame distances.

✓Compaction: It is easier to compact with this bitumen due to the compactionwill be fine in less time. Are only needed less passes to compact as with aconventional bitumen.

✓Salt/Ice/Water resistance: pavements life become longer, due to the betterenvolve bitumen-aggregate.



• M-601 Road - Navacerrada Mountain Ski port. (1880 m) 26 Octobre ´16.

• Project carry out with Nanostructured Bitumen.

• Area in Green with big slope.



✓Immersion – Compression Test (ASTM D1075) – Navacerrada Ski Port


Dry Specimens Wet Specimens

3,18

3,2

3,22

3,24

3,26

3,28

3,3

3,32

3,34

3,36

3,38

COMPRESSIVE STRENGTH (MPa)


• North of Spain Road, Asturias, between mountains and near the Cantabric Sea.

• Carried out under Winter conditions (22 January ´17)



✓Immersion – Compression Test (ASTM D1075)

• AC16 Surf 50/70S


92

94

96

98

100

102

104

106

Conventional Bitumen

Nanostructured Bitumen


• Compaction test:• Grey: Conventional

• Yellow: Nanostructured Bitumen

• AC 16 Asphalt Mix


2

2,05

2,1

2,15

2,2

2,25

Densityt/m3


• A2 Highway, Zaragoza, (Spain).

• Applied June´17



✓Immersion – Compression Test (ASTM D1075) – A2 Highway


C-1 NS-1 C-2 NS-2

0

200

400

600

800

1000

1200

1400

1600

1800

ITSd

ITSw


• Developed on August, 2017, to Projects in Canada.

• Resistance of Compacted Hot MixAsphalt (HMA) to Moisture-Induced Damage – AASHTO T 283-07 (2011)



Conclusions✓Specific Bitumen for extreme climate

✓Improved properties, big resistance at salt chemical attack.

✓Increase cash flow return.

✓Reinforcement could be delayed in time.

✓Compaction design ir reached before.

✓Reduction of laying times.




Other innovations


Other innovations

Liquid polymer modifies bitumen for very little applications


Other innovations

Using Plant Molecule Lignin in Bitumen


Other innovations

Compactor density control during the compaction


Many [email protected]


innovation : nanostructured bitumen · 2018-04-05 · water penetration in asphalt mix ... 100 102...

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