| 摘要 |
A method and apparatus for asphalt paving in which existing asphalt pavement is removed, mixed with additives and relaid as a fresh layer of pavement. The apparatus includes a train, composed of a series of cars or trailers, which is adapted to move along the roadway. The train includes a fuel operated electrical generating unit which generates electricity that is transmitted through a power line extending along the length of the train. The hot gases of combustion from the generating unit are discharged into contact with the pavement to pre-heat the pavement. Following the pre-heater in the train, is a microwave heating unit which is connected to the power line and operates to soften the pavement. Additional aggregate, asphalt and other additives can be applied to the existing softened pavement ahead of a planar, or other pavement removing unit. The planar acts to remove the softened pavement, along with the added materials, and the mixture is then conveyed to a second microwave heating unit, located behind the planar in the train, where the mixture is heated to a temperature sufficient to melt the asphalt. The mixture is then passed through a rotating drum, which follows the second microwave heating unit in the train, to further mix the components and is then delivered to a paver for application to the roadway as a new layer of pavement. The paver is followed by a hot and cold roller to attain the desired pavement density. As an alternative, the removed pavement can be hauled to a batch site where it can be mixed with additives and heated by a microwave heating unit to form a new paving batch.
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