Ideas. Refined.

We led the development of polymer-modified asphalt in Canada, so it's no wonder we're committed to continuously improving it. Our lab at the University of Calgary is a world leader in asphalt research.

 

Setting new industry standards

Our scientists prove asphalt can be refined and upgraded in the lab.


Research papers

Stay up-to-date with our innovations in polymer-modified asphalt and other technologies.

Network Formation and Properties of Asphalt Modified with Styrene-Butadiene-Styrene and Crosslinked by two Different Crosslinking Agents 

Research question: Can new, commercially available crosslinkers be used in place of sulphur to produce superior polymer-modified asphalt (PMA)?

Conclusion: Crosslinking the PMA network leads to higher maximum service temperature values and enhanced low service temperature performance. Optimal dosages of crosslinkers were determined and a method to evaluate alternative crosslinkers was established.

 

Author:

Martin Jasso

Co-Authors:

Brett Lambden, Ludo Zanzotto

Presented:

Canadian Technical Asphalt Association Proceedings (CTAA), November 2018
Regina, SK, Canada

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The Effect of High Stress on Asphalt Binders and Hot Mix Asphalt

Research question: Do new asphalt specifications match best performance?

Conclusion: Stress levels associated with the specification and with lab test temperatures that best reflect field performance are not necessarily the same. As a result, PMAs prepared from softer binders have to be carefully formulated to ensure rutting resistance in the field.

Author:

Gabriel Skronka

Co-Authors:

Martin Jasso, Otakar Vacin

Presented:

Canadian Technical Asphalt Association Proceedings (CTAA), November 2018

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Evaluation of Increased Use of RAP with Soft Husky Asphalt Binder

Research question: In response to a challenge issued by Washington State, we worked to determine how to increase the use of recycled material while preserving asphalt durability.

Conclusion: Husky’s high-quality asphalt is ideally suited to increasing the use of RAP while improving the fatigue and low-temperature properties of the mix.

Author:

John D’Angelo

Co-Authors:

Raj Dongre, Brett Lambden

Presented:

Association of Asphalt Paving Technologists (AAPT) Technical Session, 2019

About AAPT

 


Evaluation of Newly Developed Performance Grading Systems for Emulsion Residues

Research question: How can asphalt-emulsion specifications better reflect performance in the field?

Conclusion: Industry provided feedback to researchers at Texas A&M and North Carolina State who were developing new asphalt specifications. These recommendations were accepted and a draft AASHTO specification was put out for review.

Author:

Andrew Hanz

Co-Authors:

R. Michael Anderson, Codrin Daranga, Brett Lambden, Mary Ryan

Presented:

Association of Asphalt Paving Technologists (AAPT) Technical Session, 2019

About AAPT 


Development of internal structure of polymer-modified asphalts via transformations of the reduced frequency 

Research question: Explores the transformations of reduced frequency to apparent molecular weight distribution (MWD) as well as to the temperature of asphalt materials.

Conclusion: The combination of two transformations of the reduced frequency were related to the most significant changes of asphalt: the first one related to the transition from solid-like material to viscoelastic solid and eventually to viscoelastic liquid as the temperature increases. The appearance of new region, “local maximum followed by local minimum on the loss tangent” was sensitive to the type of polymer modification. This observation can be used by Husky Asphalt to evaluate the potential effects of modifiers on asphalt composites.

Author:

Martin Jasso

Co-Authors:

Jiri Stastna, Giovanni Polacco, Giacomo Cuciniello

Published:

Journal of Applied Polymer Science, October 2020

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On Jan. 1, 2021, Cenovus Energy acquired Husky Energy. The combined company is the third-largest Canadian oil and natural gas producer and the second-largest Canadian-based refiner and upgrader. Learn more at Cenovus.com