In-situ heat regeneration device for layered heating, raking and moving mixed asphalt pavement

Abstract

The invention discloses a bituminous pavement hot in-place recycling device achieving layered heating and spiking-up and movable mixing. The device comprises a first heating machine, a second heating machine and a recycling and mixing paver. The first heating machine, the second heating machine and the recycling and mixing paver advance and work in continuous cooperation in order. A layered heating manner is adopted, heating is achieved in two layers, and spiking-up is carried out twice, so that heating efficiency is obviously improved. The temperature is obviously reduced compared with the heating temperature of 140 DEG C of a traditional asphalt heating machine, and black asphalt dust generated at high temperature is avoided. A recycling pavement is heated more evenly, and heating fuel can be greatly saved.

Description

technical field [0001] The invention relates to an asphalt pavement construction device, in particular to an in-situ thermal regeneration device for asphalt pavement with layered heating, raking and moving mixing. Background technique [0002] At present, the existing pavement heating units at home and abroad mostly adopt the method of directly heating the original pavement. Since the recycled surface layer is generally 4-6 cm thick, it takes a certain amount of time and enough energy to transfer the heat energy to the bottom. The problem is that the temperature of the 1-2 cm thick asphalt mixture on the top of the asphalt pavement is too high, generally reaching 200 °C. However, the temperature of the asphalt layer at the lower 3-6 cm is only about 80°C, and the uneven heating of the overall pavement is very serious; three heating machines are needed to reheat the reclaimed pavement back and forth to reach the construction temperature, resulting in a lot of waste of fuel; a...

AI Technical Summary

Problems solved by technology

Since the recycled surface layer is generally 4-6 cm thick, it takes a certain amount of time and enough energy to transfer the heat energy to the bottom. The problem is that the temperature of the 1-2 cm thick asphalt mixture on the top of the asphalt pavement is too high, generally reaching 200 °C. However, the temperature of the asphalt layer at the lower 3-6 cm is only about 80°C, and the uneven heating of the overall pavement is very serious; three heating machines are required to heat the regenerated pavement back and forth to reach the construction temperature, resulting in a lot of waste of fuel; asphalt pavement will generate a lot of Black asphalt smoke and dust, polluting the environment, neither economical nor environmentally friendly

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