Asphalt finishing screed having rotary compactor

Details Asphalt finishing screed having rotary compactor Asphalt finishing screed having rotary compactor

E - Fixed Constructions

01

C

E01C 19/48 (2006.01)

Patent

CA 2133414

2133414 9322504 PCTABS00027 An asphalt finishing screed (22) is disclosed which is adapted to achieve essentially complete compaction of the asphalt mix over a range of finished mat thicknesses. The screed (22) comprises a vertically adjustable strike off bar (32), a rotary compactor (35) positioned immediately behind the bar, and a screed plate (50) positioned immediately behind the rotary compactor (35). In one preferred embodiment, the rotary compactor (35) comprises a rotor which includes a plurality of freely rotating rollers (44) about the peripheral surface thereof. In operation, the adjustable strike off bar (32) is set at an elevation so as to meter the material to the rotary compactor (35) and to achieve the desired compaction for the particular thickness of the finished mat being laid. The rotary compactor (35) then impacts the mat in an essentially vertical direction and so as to achieve complete compaction of the mix.

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