Submission ID 103303
Session Title | SO - Testing, Modelling and Innovation for Roadway/Embankment Materials and Geotechnical Engineering |
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Title | Cracking Performance of Polymer Modified Asphalt Mixes in Saskatchewan |
Abstract or description | Cracking Performance of Polymer Modified Asphalt Mixes in Saskatchewan
Aziz Salifu, P. Eng., Sr. Materials Engineer Saskatchewan Ministry of Highways Saskatoon, Saskatchewan Aziz.Salifu@gov.sk.ca
Ania Anthony, P. Eng., Director, Surfacing and Materials Saskatchewan Ministry of Highways Saskatoon, Saskatchewan Ania.Anthony@gov.sk.ca
Kelly Pederson, P. Eng., Sr. Materials Standards Engineer Saskatchewan Ministry of Highways Saskatoon, Saskatchewan Kelly.Pederson@gov.sk.ca
Rielle Haichert, P. Eng., Chief Materials Engineer PSI Technologies Saskatoon, Saskatchewan rhaichert@pavesci.com
Paper prepared for presentation at the Testing, Modelling and Innovation for Roadway/Embankment Materials and Geotechnical Engineering Session of the 2024 Transportation Association of Canada (TAC) Conference & Exhibition Vancouver, British Columbia
Abstract
Based on network level asset management data, cracking is the most prevalent asphalt pavement distress observed on Saskatchewan’s provincial highway network. Reflective cracking typically occurs within two years of paving, and in some cases as early as after the first winter. Applying preservation treatments on newly rehabilitated asphalt pavements takes funds away from other roads and impacts the overall level of service of the pavement network. In 2019, the Saskatchewan Ministry of Highways (ministry) implemented the use of polymer-modified asphalt binders for highways with high truck traffic, with the objective of mitigating early cracking of newly rehabilitated asphalt pavements.
This paper compares the cracking performance of asphalt pavement sections constructed in 2019 using polymer-modified PG58-37P asphalt binder with hydrated lime to an asphalt pavement constructed using 150-200A pen-vis asphalt binder with hydrated lime. Visual crack assessments were conducted and automated cracking data from a laser crack measuring system (LCMS) was compared over time within each test section and across the test sections. Further assessment of the test sections included performing laboratory testing and evaluation of cracking resistance of the asphalt mixes on pavement cores.
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Presentation Description (for Conference App) | This presentation compares cracking resistance of polymer modified asphalt binder and typical 150-200A asphalt binder used in Saskatchewan. |
Presenter and/or Author Information | Aziz Salifu, Saskatchewan Ministry of Highways
Ania Anthony, Saskatchewan Ministry of Highways |