Method and apparatus for filling voids in recycled asphalt
AssigneeAngelo Benedetti, Inc.
InventorsAngelo W. Benedetti, Angelo W. Benedetti, Jr.
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a method and apparatus for filling voids in recycled asphalt. When asphalt has been recycled through the use of a heater-scarifier-screed apparatus, inherently, the pavement surface has voids therein which render the surface porous. The apparatus disclosed herein spreads a thin layer of asphalt over the recycled asphalt in such a manner that substantially all of the voids in the surface thereof are filled. When the method disclosed herein has been completed, the result is a substantially smooth, recycled, repaved trafficable asphalt surface.
Claims39
A method of recycling and repaving an asphalt pavement surface of a road including the steps of:
- (a) heating said pavement surface to a temperature sufficiently high to cause said pavement to soften and maintaining said pavement surface at least said temperature throughout said method;
- (b) scarifying said surface to a depth not exceeding the depth to which the asphalt thereof has been softened;
- (c) leveling said scarified surface to a desired contour;
- (d) spreading a thin overlay of overlay material on said leveled surface, said overlay material filling substantially all voids created in said surface by steps (a), (b) and (c);
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- (e) rolling the overlayed leveled surface to provide a smooth trafficable road surface which is substantially free of voids, said spreading step being accomplished by counterrotating two spinners each supplied with overlay material from a lateral discharge port of a subchamber provided for each spinner, said spinners each having mounted thereon a plurality of distribution vanes.
A method of repairing a heated, scarified and leveled asphalt pavement surface of a road, including the steps of:
- (a) maintaining the temperature of said surface sufficiently high enough to maintain said surface in a softened state;
- (b) spreading a thin overlay of overlay material on said softened surface, said material filling substantially all voids in said surface, said spreading step being accomplished by counterrotating two spinners each supplied with overlay material from a lateral discharge port of a subchamber provided for each spinner, each spinner having distribution means thereon for distributing said overlay material therefrom;
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- (c) rolling said surface to provide a smooth trafficable road surface.
A method of providing an asphalt overlay on a ground surface comprising the steps of:
- (a) providing an overlay spreading device including two counterrotating spinners, each spinner having a plurality of distribution vanes thereon and adapted to be supplied with overlay material laterally discharged from a port of a supply chamber for said material, a separate supply chamber being provided for each spinner;
- (b) heating said material to a sufficiently high temperature to render said material soft, pliable and less likely to stick to surfaces of said device;
- (c) supplying said heated material to said chambers and thence laterally to said spinners;
- (d) distributing said material on said surface by controlled rotation of said spinners;
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- (e) rolling said overlay to provide a smooth trafficable road surface.
A method of repaving a recycled asphalt pavement, while said recycled pavement is maintained at a sufficiently high enough temperature so as to maintain said recycled pavement in a soft compactable state, said recycled pavement having a surface having a plurality of voids therein, said method including the steps of:
- (a) discharging, as a single step, an amount of overlay material evenly on the surface of said pavement sufficient to fill said voids without appreciably raising the elevation of said surface;
- (b) leveling said overlay material without appreciably striking off said overlay material, said leveling step merely smoothing said overlay material which has already been evenly discharged;
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- (c) compacting said overlay material and recycled pavement into a homogeneous, smooth pavement surface not appreciably elevated from the elevation of said surface prior to said discharging step.
An apparatus for spreading an overlay of asphalt paving material on a recycled road surface comprising:
- (a) front storage means for storing a load of said material;
- (b) rear storage means;
- (c) conveyor means for supplying said material from said front storage means to said rear storage means;
- (d) said rear storage means having two laterally spaced outlets, each said outlet leading to a subchamber;
- (e) each said subchamber having a lateral outlet port;
- (f) distributor means rotatably mounted below each subchamber for evenly distributing said material, each said distributor means comprising:
- (1) a substantially flat plate;
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- (2) a plurality of vanes mounted on said plate;
- (g) first drive means for controllably counterrotating said plates, each subchamber having mounted therein a further rotary plate constrained to move with the flat plate corresponding to the subchamber in which the rotary plate is contained, each said rotary plate having a plurality of adjustable distribution paddles mounted thereon;
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- (h) second drive means operable independently of said first drive means for moving said apparatus along said road surface.
Dependencies are inferred from the claim text.