Dynamic Properties of Tire-Derived Aggregates

Ahmed Moussa, Hany El Naggar

In the proceedings of GeoSt. John's 2019: 72nd Canadian Geotechnical Conference

Session: Laboratory Testing

ABSTRACT: There are approximately 35 million scrap tires generated per year in Canada. Around 30% of which, end up in stockpiles that occupy large landfill space causing several environmental and public health problems. Therefore, utilizing these waste materials is vital for environmental, health and economical improvements. Consequently, in the recent past, there has been an increasing need to study and investigate the behaviour of Tire Derived Aggregate (TDA) and its usage in various civil engineering applications. Several experimental studies were carried out to investigate the behaviour of TDA under monotonic loading and cyclic loading. However, the experimental work regarding the dynamic behaviour of Type A TDA is not yet addressed. Therefore, the scope of this study is to investigate the dynamic behaviour of TDA under cyclic loading. A strain controlled consolidated undrained large-scale cyclic triaxial test is carried out to obtain the dynamic properties of TDA under confinement pressures of 100 and 200 KPa. A staged loading was applied to all specimens for 0.5%, 1%, 2%, 5%, 7.5% and 10% shear strain amplitudes. This paper presents the experimental work results, including the shear modulus and dampening ratio variations with shear strain for Type A TDA. This is a research in progress, and more results on different confining pressures will be provided later. ABSTRAITE Il y a environ 35 millions de pneus usagés produits chaque année au Canada. Parmi eux, 30% se retrouvent dans des déchèteries qui occupent de vastes terrains, ce qui pose une multitude de problèmes environnementaux et de santé publique. Par conséquent, trouver une utilisation alternative de ces déchets est essentielle pour l'amélioration de l'environnement, de la santé et de l'économie. En conséquence, il y a eu récemment un besoin croissant d'étudier et utilisation dans diverses applications du génie civil. Plusieurs études expérimentales ont été menées pour étudier le comportement du TDA sous chargement monotone et chargement cyclique. Cependant, les travaux expérimentaux sur le d'étudier le comportement dynamique du TDA soumis à une charge cyclique. Plus précisément, un essai triaxial cyclique à grande échelle, non drainé, consolidé et sous déformations contrôlées est réalisé pour obtenir les propriétés dynamiques du TDA sous des pressions de confinement de 100 et 200 KPa. Un chargement a été appliqué à tous les échantillons, par présente les résultats des travaux expérimentaux, y compris les variations du module de cisaillement et du coefficient ont fournis ultérieurement.

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Cite this article:
Ahmed Moussa; Hany El Naggar (2019) Dynamic Properties of Tire-Derived Aggregates in GEO2019. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Geo2019Paper492,author = Ahmed Moussa; Hany El Naggar,title = Dynamic Properties of Tire-Derived Aggregates ,year = 2019}