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Trackless Tack-coat Systems for Canada: Are We There Yet?

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by

Michelle Suda

on 11 March 2014

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Transcript of Trackless Tack-coat Systems for Canada: Are We There Yet?

COLAS CANADA TECHNICAL MEETING 2014
Lake Louise, AB
March 4-6th
Justin P. Suda, R. Chem
Trackless Tack-coat Systems for Canada:
Are We There Yet?

Outline
Year in review
What makes a good tack?
Challenges
Review technologies
Demand for tack in western Canada
CST study
Results
Going forward

Tack Coats -Year in Review
Products we used last year:
SS-1
CSS-1
Colasphalt Tack


What makes a good tack emulsion?
Provides a Bond
Setting Time
Wets Surface -
Challenge #1
Less Tacky -
Challenge #2

Surface Wetting
Three types of surfaces:
1) Milled
2) Distressed
3) Paved
Tackiness
Need hard asphalt binder
Problem:

No refineries in western
Canada make it!
Supercol with
Ruptcol A/Emulcol
Colnet
Neoclean
Colasphalt Tack
Superbond
Important Components
Materials - Can we source?
Can we manufacture hard asphalt?
Suitable for all substrates?
Cost
Sense of Urgency
Competitors
Blacklidge - USA
Have had a patented system in place for several years

McAsphalt - Canada
Recent development
Starting trials 2014
CST Study
Collaboration with CST

Phase One:
Sent samples to CST
Lab manufacture of hard asphalt
Emulsification
Phase Two
Lab and construction performance
Study -Two Phases
Phase One Results

Manufactured hard asphalts
Found correlations between asphalt and modifiers
Achieving 40-50 Pen

Emulsified hard asphalts
Multiple formulations

Six potential engineered designs
Going Forward
Lab Testing
AkzoNobel "Tackiness Test"
Construction Performance
Large Scale
Phase One Improvements
Increase the dosages of emulsifier to make more stable
Using co-surfactants – two emulsifiers
Alternative modifiers to harden asphalt

Summary
Components to making a good trackless tack
Western Can. tack demand and challenges
CST Study - Early successes
Future - Formulation, lab, and field work
Are we there yet? Almost.
Acknowledgements
CST Team
Jean Martin Croteau, ColasCanada
Ted Harrison, ColasCanada
Martin Thompson, Colas Solutions
Stephane Harnois, CST
Thomas Zamaron, CST
Abdul Elkadri, Gecan
Tony Manzi, Gecan
Alex McPherson, Colasphalt
Chuck Van Dyk, ColasCanada
Bob Charter, SGIE
Jeffery Jarvis, Gecan
Martin Loubier, ColasCanada
Chris Deckhoff, ACP/Lafrentz
Stephane Trudeau, S.T.E.B.

Contributors:
Compromise to make a product that can be used on all substrates
"Trackless"
Fast Breaking
Trackless
Cost
$$
$
$$$
$
$$
Full transcript