A method for continuous on-site recycling of an asphalt...

E - Fixed Constructions – 01 – C

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E01C 23/00 (2006.01) E01C 23/12 (2006.01)

Patent

CA 2575074

A method for recycling in place an asphalt mixture layer of a paved road continuously, while moving a self-propelled vehicle system, which comprises a step of heating and softening the asphalt mixture layer, a step of scraping and breaking said hot and softened asphalt mixture layer and keeping the softened mixture at a temperature sufficient not to form an aggregate, to prepare an asphalt mixture having a single-grained structure, a sieving step of classifying said asphalt mixture having a single-grained structure into a plurality of grain size groups, a step of designing mix proportions for converting said asphalt mixture to a recycled asphalt mixture by the use of said plurality of grain size groups classified, a step of mixing uniformly said recycled asphalt mixtures having designed mix proportions, and a step of spreading and compacting said recycled asphalt mixtures having been mixed uniformly, to thereby form a recycled asphalt mixtures layer.

La présente invention concerne un procédé pour recycler de manière continue une couche de mélange d'asphalte en place d'une chaussée revêtue, tout en déplaçant un système de véhicule autopropulsé, qui consiste à chauffer et ramollir la couche de mélange d'asphalte, à racler et casser ladite couche de mélange d'asphalte chaude et ramollie et à garder le mélange ramolli à une température suffisante pour ne pas former un agrégat, afin de préparer un mélange d'asphalte ayant une structure à grain simple, à tamiser et classer ledit mélange d'asphalte ayant une structure à grain simple en groupes de grains de taille variée, à désigner des proportions de mélange pour convertir ledit mélange d'asphalte en un mélange d'asphalte recyclé par l'utilisation desdits groupes de grains de taille variée classés, à mélanger uniformément lesdits mélanges d'asphalte recyclés ayant des proportions de mélange désignées et à étaler et à compacter lesdits mélanges d'asphalte recyclés ayant été mélangés uniformément pour ainsi former une couche de mélange d'asphalte recyclé.

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