Supervised by:

Jean-Pascal Bilodeau (Regular member)

Research project description

Quantification of influence factors in the studded tyre wear

IntroductionThe use of studded tyres (PAC) is common in the Nordic countries, in contexts where weather conditions are likely to cause unsafe road situations. In general, the use of studded tyres can lead to a reduction in accidents during winter; however, they are frequently identified as playing an important role in the development and evolution of rutting on networks. Wear resistance depends on many factors associated with 1) vehicles, tyres and studs; 2) pavement and pavement materials; 3) traffic; and 4) the environment. The project aims to develop a model to evaluate the evolution of wear ruts associated with the use of studded tyres. Few models have been developed for this purpose, and it is essential to establish precisely the factors that have the greatest influence on the phenomenon for conditions in Quebec.Objectives-Determine the most accurate tests for the evaluation of asphalt mix sensitivity subjected to the studded tyres wear. -Identify the influence of the physical and mechanical properties of the aggregates and the asphalt mix on the rate of wear rut development. -Develop and calibrate a model to evaluate the studded tyres wear in Quebec. Study sitesThe aggregates used for asphalt mixes come either from crushed stone or from natural deposits of sand or gravel. In order to consider the influence of geological variability on the behaviour of pavements concerning rutting, fourteen aggregate sources were selected in different regions of Quebec: Capitale-Nationale, Chaudière-Appalaches, Côte-Nord, Saguenay Lac-Saint-Jean, Laurentides-Lanaudière, Mauricie, Montréal, Centre-du-Québec.Material and methodsTo generate a prediction model, different activities will be carried out: literature review; sampling of aggregates and asphaltic mixtures; physical, mechanical, and petrographic characterization of aggregates; characterization of asphalt specimens; tests in the Laval University Road simulator; database analysis for the province of Quebec and the development and calibration of studded tyre rutting model. The aggregates performance will test using the Los Angeles, the Micro-Deval and the Nordic Ball Mill tests. The latter is one of the main tests for aggregates, run in countries with considerable studded-tyres users. In addition, the wear resistance of different asphalt formulations will be measured in the laboratory using the Swedish Prall abrasion tester.ReferencesArrojo, G. (2000). Pavement wear caused by the use of studded tyres. 69. http://www.diva-portal.org/smash/get/diva2:669913/FULLTEXT01.pdf Bahadori, A., Zhang, K., Li, X., Muhunthan, B., & Hall, M. (2018). Development of Asphalt Materials to Mitigate Studded Tire Wear of Pavements. Pacific Northwest. BSI BNQ. 2014. NQ 2560-114/2014 Travaux de génie civil-Granulats. Bureau de Normalisation du Québec Doré, G.,

Research Site Coordinates