Abstract:
A portable asphalt recycling device comprising: a base; a rotatable drum unit secured to the base; a hopper secured to the rotatable drum unit used to load and unload materials from within the drum unit; a burner secured to the rear of the drum unit to heat the materials; one or more corkscrew fins located within the drum unit, the fins being operable in the mixing and folding of the material and also being operable in pulling the material to the back of the drum unit for complete heating and mixing and pushing the material from the back of the drum unit to the front of the drum unit for unloading; wherein the material within the drum unit does not come into contact with a flame produced by the burner; and a thermostatic heating sensor device located within the drum unit used to measure the temperature of the material.
Abstract:
Mobile and automated processing utilizes additive manufacturing. Methods include the utilization of mobile and automated processing apparatus. The mobile additive manufacturing apparatus may perform surface treatments that alter the topography of an existing roadway surface. Other examples may involve the processing of dimensionally large layers which may be joined together to create large pieces with three dimensional shape. A mobile additive manufacturing apparatus, called an Addibot, is configured to comprise a drive system which may be operative to move the apparatus along a surface. The Addibot may function with no physical tether. The Addibot may comprise a navigation system which among other functions may determine the Addibot' s current location and its current bearing or direction that it would travel in when caused to move or is travelling in if moving.
Abstract:
A method of repairing a damaged area of a bituminous wearing course including heating the damaged area with an infrared heater, raking the heated damaged area, applying a bitumen rejuvenating liquid composition to the raked heated damaged area, adding new material to the rejuvenated raked heated damaged area, compacting the new material to provide a compacted repaired area of bituminous wearing course, wherein said new material is applied cold and is in the form of a composition including aggregate, bituminous material and a naturally occurring mineral asphalt based liquid material. A composition for use as the new material in the method of repairing a damaged area of a bituminous wearing course includes aggregate, bituminous material and a naturally occurring mineral asphalt based liquid material, and is in a cold state. The damaged area may be heated by an infrared heater, said infrared heater comprising at least one radiator for applying heat to an underlying damaged bituminous wearing course, and control means for controlling the applied heat such that the heating temperature is defined by a lower predetermined limit and an upper predetermined limit.
Abstract:
A pavement recycling assembly includes a frame defining a grinding chamber and a mixing chamber. The grinding chamber carries a rotatable laterally-extending toothed grinding drum and the mixing chamber houses at least one toothed rotatable mixing wheel. A screed assembly is disposed behind the mixing chamber for extruding said mixture at a desired height so as to form a pavement. Pavement is recycled in-situ using the recycling assembly by grinding existing pavement, adding fluid asphalt to the pavement, optionally adding supplemental pavement, and mixing the fluid asphalt with the existing and/or supplemental pavement. The mixture is then extruded at the proper height by an adjustable screed. The recycling assembly may be suspended under a self-propelled chassis so that it can be shifted laterally to engage a pavement surface selected for repair without moving the entire chassis.
Abstract:
A method of paving a gravel and/or dirt roadway (10) is provided. This method includes evaluating the roadway to determine if it is an appropriate candidate for emulsion stabilization, rotating a milling head (20) down a roadway to break up gravel and dirt base layer (14), injecting an asphalt emulsion into the broken up gravel and dirt (24), and mixing the emulsion with the gravel and dirt (24) so as to form an emulsion stabilized layer (18). The emulsion stabilized layer (18) is then spread and compacted to create a paved roadway. Following this, a wearing surface may be applied to the emulsion stabilized layer (18).
Abstract:
The proposed process for repairing the top layer of roads made from rolled asphalt, thin layers in cold or hot laying and/or mastic asphalt, by drilling, lifting, treatment and re-laying, involves treatment by adding more binder or additives to obtain a mastic asphalt and roughing the surface after re-laying.
Abstract:
A process for continuously heating an asphalt surface comprising the steps of: (i) providing asphalt surface heating means on the asphalt surface; (ii) translating the heating means a first distance along the asphalt surface; (iii) reversing the direction of and translating the heating means a second distance along the asphalt surface in a direction substantially opposite to that in step (ii); (iv) reversing the direction of and translating the heating means a first distance along the asphalt surface in a direction substantially the same as that in step (ii); (v) repeating steps (iii) and (iv) in a cyclic manner to provide a heated asphalt surface; wherein the ratio of the second distance to the first distance is in the range of from about 0.10 to about 0.90.
Abstract:
A road-building machine intended particularly for building gravel roads. The raw material to be crushed is collected and windrowed in the middle of the road. The machine moves along the road and picks up the windrowed material firstly by means of a worm or endless screw (13) that feeds the raw material to a first rotor (14) which comprises hammers and breaks the larger stones by tilting upwards against upper crossbars (16), then feeds the material to a second rotor (14) which crushes the medium-sized stones by creating friction between them and vertical bars (17, 20). To prevent the material being crushed from building up between the two rotors, these have to be located very close together so that their hammers cross one another, which means that the two identical rotors must be synchronized.
Abstract:
A road surface recycler for cutting road pavement material from a road, pulverizing that material, mixing it with a liquid binder and relaying it onto the road surface. A single mobile structure carries a reclaimer drum (14) for cutting paving material from the road, a pulverizer (22) for breaking up the material and mixing it with a binder and a delivery means (56) for relaying the material onto the road. The reclaiming drum (14) is driven in a direction (17) to cut downwardly into the road surface (40) and pass the cut material rearwardly under the drum for delivery to the pulverizer. The pulverized material is delivered to a surge bin (51) which can accumulate material until it can be deposited on the road at a position already traversed by the reclaimer drum.