Abstract There is disclosed a method for producing bituminous layers having at least one marginal rim, curbing, shoulder, gutter or other profiled edge configuration, termed abutment, in which bituminous mix is laid out over the area of the road and the area of the abutment with the abutment being shaped to the desired profile and simultaneously precompacted. Another aspect of the method includes subjecting the shaped and precompacted abutment to a second precompacting step. The method includes applying additional heat to the mix of the abutment during either or both precompacting steps. There is also disclosed apparatus for carrying out the method including a means for laying out and precompacting an area of the bituminous layer, a laterally connected and relatively movable guide plate for shaping the desired profile, a profiled drag plate connected to the guide plate in trailing relation therewith and vibrating and heating means operably associated with either one or both of the guide and drag plate.
A nonrail-bound apparatus which may be used directly on the ground for simultaneously constructing a bituminous mix layer having a profiled lateral abutment comprising a finisher including means for laying out and precompacting an area of said bituminous mix layer, at least one profiled guide plate laterally connected to said first-mentioned means, said guide plate including a bottom shaped in accordance with the profile desired for said lateral abutment, means operably associated with at least said guide plate for precompacting the mix underlying said shaped bottom, a profiled drag plate including a bottom shaped in correspondence with the shape of said bottom of said guide plate, means connecting said drag plate to said guide plate in trailing relation therewith, means operably associated with said drag plate for precompacting the mix underlying its shaped bottom, means connecting said drag plate to said guide plate including components permitting said drag plate to move relative to said guide plate, said guide plate and said drag plate including means for heating the shaped bottoms of said guide plate and said drag plate, and hinge means laterally connecting said guide plate to said laying out and precompacting means of said finisher.
Claim 2
Dependent Claim
196 words
A nonrail-bound apparatus which may be used directly on the ground for simultaneously constructing a bituminous mix layer having a profiled lateral abutment comprising a finisher including means for laying out and precompacting an area of said bituminous mix layer, at least one profiled guide plate laterally connected to said first-mentioned means, said guide plate including a bottom shaped in accordance with the profile desired for said lateral abutment, means operably associated with at least said guide plate for precompacting the mix underlying said shaped bottom, a profiled drag plate including a bottom shaped in correspondence with the shape of said bottom of said guide plate, means connecting said drag plate to said guide plate in trailing relation therewith, means operably associated with said drag plate for precompacting the mix underlying its shaped bottom, means connecting said drag plate to said guide plate including components permitting said drag plate to move relative to said guide plate, said guide plate and said drag plate including means for heating the shaped bottoms of said guide plate and said drag plate, and hinge means laterally connecting said guide plate to said laying out and precompacting means of said finisher.