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Behavior of flexible pavement containing foam glass aggregates as thermal insulation layer

Pauline Segui, Erdrick Perez-Gonzalez, Jean-Pascal Bilodeau, Guy Dore

In the proceedings of: GeoCalgary 2022: 75th Canadian Geotechnical Conference

Session: W5

ABSTRACT: To protect pavements from the risks of damage and premature deterioration associated with frost penetration, two techniques are used in Canada: oversizing the infrastructure by using non-frost sensitive materials or by incorporating polystyrene panels as insulation layer. To date, polystyrene is the only material with a standardized design procedure recommended by the Canadian road authorities as an insulating or lightweight material. Foam Glass Aggregates (FGAs) made from the recycling of glass waste represent a promising technology that is still new in Canada and is the subject of an NSERC research program at Universite Laval. Four road test sites in municipal environments were built in Quebec using FGAs as insulation material associated with control sections including polystyrene or without insulation. A comparative assessment of the thermal behaviour and frost heaving measured over several years will be detailed.


RÉSUMÉ: Au Canada, deux techniques sont d’usage pour protéger les chaussées des risques de dommages et de vieillissements prématurés en lien avec la pénétration du gel dans les structures : le surdimensionnement des infrastructures en installant des matériaux non gélifs ou l’intégration d’une couche de polystyrène qui joue le rôle d’isolant. Pour le moment, seul le polystyrène a un usage normalisé au Canada comme matériau isolant en génie routier. Les granulats de verre cellulaire (GVC) issus du recyclage des résidus de verre représentent une technologie prometteuse encore inédite au Canada qui fait l’objet d’un programme de recherche du CRSNG à l’Université Laval. Quatre sites d’essai en milieux municipaux ont été mis en place au Québec en intégrant des GVC comme matériau isolant associé avec des sections témoins incluant du polystyrène ou sans isolant. Un bilan comparatif sur plusieurs années du suivi du comportement thermique et des gonflements mesurés sera détaillé ici.


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Cite this article:
Segui, Pauline, Perez-Gonzalez, Erdrick, Bilodeau, Jean-Pascal, Dore, Guy (2022) Behavior of flexible pavement containing foam glass aggregates as thermal insulation layer in GEO2022. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Segui_GEO2022_362, author = Pauline Segui, Erdrick Perez-Gonzalez, Jean-Pascal Bilodeau, Guy Dore,
title = Behavior of flexible pavement containing foam glass aggregates as thermal insulation layer ,
year = 2022
}