Abstract: A method and apparatus for altering an aggregate gradation mixture of an asphalt concrete mixture. The apparatus includes a heater for heating a layer of existing roadway materials, a milling and mixing auger for milling the heated layer of existing roadway materials and a hopper and conveyor for providing a predetermined amount of treated new usable aggregates to the milling and auger for mixing with the heated layer of existing roadway materials in order to produce a new asphalt concrete mixture. The auger including a plurality of milling bits extending therearound for receiving the predetermined amount of aggregates and mixing them with the milled layer of existing roadway materials, the milling bits are slanted to direct the aggregates received thereby and milled layer to a center line of the apparatus. A second auger is positioned along the center line of the apparatus and behind the auger for further mixing the new asphalt concrete mixture.

Abstract: An asphalt pavement heating device, for use with an asphalt pavement recycling or repair apparatus which uses heaters to warm the asphalt to a pliable form thereby facilitating the recycling or repair process, wherein a pressurized combustible gaseous mixture of fuel and air is burned in a non-oxidizing blue hot flame which is impinging the pavement surface, said flame being formed in a firebox which is suspended on the front and/or underneath the carriage of the apparatus over the heated surface, said firebox having flexible or "sealing curtain type" side walls which drape to the surface thereby excluding the entrance of ambient air, said device being characterized by its capabilities to rapidly heat asphalt concrete pavement and its smokeless exhaust.

Abstract: A process for recycling asphalt pavement by serially heating and milling the asphalt until the desired depth of asphalt has been removed and then mixing the heated asphalt with additives, if needed, for reapplication to the pavement.