Method of preparing an asphalt paving material containing...

C - Chemistry – Metallurgy – 08 – L

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C08L 95/00 (2006.01) B01F 3/12 (2006.01) E01C 7/00 (2006.01) E01C 19/10 (2006.01)

Patent

CA 2444307

A method of forming an asphalt paving material containing recycled plastics. A first step involves forming recycled plastics into plastic particles. A second step involves dry mixing and heating aggregate and sand. A third step involves dry mixing untreated plastic particles with the aggregate and sand, while continuing heating until the mixture of plastic particles, aggregate and sand reaches a temperature range provided in accepted road building specifications for heating aggregate. A fourth step involves adding liquid asphalt to the mixture of plastic particles, aggregate and sand.

La présente description porte sur une méthode de préparation de matériau de revêtement routier à l'asphalte contenant des matières plastiques recyclées. Une première étape suppose la transformation de matières plastiques recyclées en particules de plastique. Une seconde étape implique le mélange à sec et le chauffage des agrégats et du sable. Une troisième étape consiste à mélanger à sec les particules de plastique non traitées avec les agrégats et le sable, tout en continuant le processus de chauffage jusqu'à ce que le mélange de particules de plastique, d'agrégats et de sable atteigne une plage de températures mentionnée dans les spécifications de construction des routes validées relatives au chauffage des agrégats. Une quatrième étape suppose l'ajout d'asphalte liquide au mélange de particules de plastique, d'agrégats et de sable.

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