Cold in-plant recycling mixing device and method for asphalt mixtures

Abstract

The invention discloses a cold in-plant recycling mixing device and method for asphalt mixtures. The device comprises a first level mixing cylinder (1) and a second level mixing cylinder (8). The first level mixing cylinder (1) is arranged above the second level mixing cylinder (8) and connected with the second level mixing cylinder (8) through a flexible connecting device (6). New aggregate is subjected to premixing and treatment in the first level mixing cylinder and then mixed with waste asphalt pavement materials which are subjected to preliminary mixing in the second level mixing cylinder, then the mixtures are subjected to sufficient even mixing, and products are obtained. The cold in-plant recycling mixing device is simple, economical and practical; that the effect that the new aggregate is comprehensively and evenly wrapped up with emulsified asphalt regenerants is maximally guaranteed; the evenness of mixing of the new aggregate and the waste asphalt pavement materials and the uniformity of the coating thickness of emulsified asphalt are guaranteed; and therefore, the evenness and the overall quality of regenerated mixtures are ensured.

Description

technical field [0001] The invention relates to the field of asphalt concrete mixing equipment and a mixing method at normal temperature, in particular to a plant-mixed cold recycling mixing equipment and a mixing method for asphalt mixture. Background technique [0002] In the past 30 years, my country has carried out the largest road investment and construction in the world. By the end of 2015, the total mileage of highways opened to traffic exceeded 4.5 million kilometers, of which the mileage of expressways reached 108,000 kilometers. The scale of my country's road network has ranked first in the world. First. The construction of a large number of road facilities consumes a large amount of precious natural resources, which not only destroys the natural environment, but also increases the load on the resource environment; natural resources are gradually exhausted, and there are more and more confrontations between human beings competing for resources; A large amount of wa...

AI Technical Summary

Problems solved by technology

If these new coarse-grained aggregates are mixed with old asphalt materials, it will inevitably result in little asphalt coated on the surface of the new aggregates, a very thin asphalt film, and even a large amount of graying material, which will seriously affect the uniformity of the mixture. The performance and performance are also greatly reduced, and even cannot be molded

The traditional cold recycling mixing equipment is this kind of production process of mixing together, which cannot meet the current requirements for the uniformity and high performance of the cold recycling mixture.

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