Method for asphalt compaction and compaction apparatus

E - Fixed Constructions – 01 – C

Patent

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Details

E01C 19/26 (2006.01) E01C 19/23 (2006.01) E01C 19/27 (2006.01) E01C 19/48 (2006.01)

Patent

CA 2266394

A method of compacting a mat of hot mix asphalt comprising advancing an asphalt compactor over laid asphalt substantially at the rate of advancement of an asphalt paver and within about 50 M behind the asphalt paver, or at a rate of advancement of no more than about 0.7 m/s, the asphalt compactor having a compaction surface which engages the mat over a length of at least about 1 m wherein the compaction surface is formed by a lower run of at least one belt, and wherein the compaction surface applies a maximum average load stress to the mat of less than about 50 kPa. Compaction may be achieved using a compactor (60) comprising two longitudinally spaced rotatable support assemblies (62), wherein at least one of the support assemblies (62) is adjustable to permit steering of the compactor, and wherein at least one of the support assemblies (62) comprises a modular compaction unit comprising a compaction belt (74).

L'invention porte sur un procédé de compactage d'une couche d'enrobé d'asphalte chaud consistant à faire avancer un compacteur d'asphalte sur l'asphalte étalé sensiblement au rythme de progression d'une asphalteuse et dans moins d'environ 50 m derrière, ou à un rythme de progression n'excédant pas environ 0,7 m/s, le compacteur d'asphalte présentant une surface de compactage contactant la couche sur une longueur d'environ 1 m au moins la surface compactée étant mise en forme par le retour inférieur d'au moins une bande et exerçant sur la couche d'asphalte une charge moyenne de moins d'environ 50 kPa. Le compactage peut se faire au moyen d'un compacteur (60) comportant deux supports rotatifs (62) espacés longitudinalement dont l'un (62) au moins est réglable pour permettre de diriger le compacteur, et dont l'un (62) au moins comporte une unité modulaire de compactage munie d'une bande (74) de compactage.

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