Mix well in advance asphalt mixture into the conservation tank insulation tank, the sidewall and the bottom of a heating tank, the outer wall of the tank insulation. To use cold asphalt mixture, heating time of up to 5 to 7 hours, but can not handle the road when the milling down the old asphalt mixture. The use of such a comprehensive conservation vehicle is limited.
Therefore, the comprehensive technical innovation does not have to give it a lot of new features, but to make it into a real mixing of recycled asphalt mixture of small on-site asphalt recycling mixing equipment. It should contain at least the following elements: • Isolated old asphalt mixers • Heating mixers, new aggregates (above two levels) and new asphalt metering units. If the design can be reasonable and elaborate, will be a moderate price, compact and practical, high-quality on-site small-scale asphalt pavement regeneration and maintenance equipment.
As for the pit excavation and cleaning there are cold and heat two ways. (1) thermal cleaning method: the use of gas infrared heater on the damage to the asphalt layer of the first heating and then excavation, fill hot asphalt mixture for repair, can make the road body and filling the temperature of a smooth transition, it seems to overcome the pit Around the cold meet the weaknesses, but because of the temperature changes, when rolling, the repair of the degree of compaction will be a "transition."
(2) cold cleaning method: is a small milling machine and a variety of hydraulic picks, hydraulic hammer can be quickly and easily around the edge of the pit excavation was neat, vertical, bottom and wall clean up and spray asphalt sticky layer, and then Paving hot asphalt mixture, adjust the virtual shop height, rolling. Since the compaction of hot asphalt mixture is carried out under the constraints of the four walls of the pit (on three sides), the degree of compaction can be ensured.
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