A kind of road asphalt material cold recycling equipment

Abstract

The invention relates to the field of processing of road asphalt concrete and discloses cold recycling equipment for road asphalt concrete. The cold recycling equipment comprises a storage mechanism of waste asphalt concrete, a water storage mechanism, a cement storage mechanism, a foamed asphalt storage mechanism, a mixing box and a collecting box, wherein the foamed asphalt storage mechanism comprises a heating tank and a foaming mechanism; the foaming mechanism comprises a pipe body which comprises an entering section, a mixing section and a discharging section from top to bottom; the mixing section comprises a water pipe communicated to the water storage mechanism, a water pump is mounted on the water pipe, the water pipe is of an L-shaped structure, the vertical section of the water pipe and the axis of a first liquid pipe are located on the same straight line, a mixing platform is slidably connected to the outer side of the water pipe, and the end part of the mixing platform is slidably connected to the side wall of the entering section. The constant temperature water enters the asphalt and the contact time of the constant temperature water and the asphalt is prolonged, so that the foaming rate of the asphalt is improved.

Description

technical field [0001] The invention relates to the field of road asphalt material processing, in particular to a road asphalt material cold recycling equipment. Background technique [0002] Cold recycling of asphalt materials refers to milling and crushing old pavement materials at room temperature, then mixing them with cement, water and new asphalt materials, and then paving and rolling them to form a new pavement structure . Among them, foamed asphalt cold recycling technology is currently commonly used. It can not only give full play to the residual value of old asphalt materials, but also convert the semi-rigid pavement structure into a semi-flexible structure, prolonging the service life of road asphalt. Foamed asphalt is to inject a certain amount of room temperature water into hot asphalt to make it expand and form a large amount of asphalt foam. After a period of time, the asphalt foam bursts. When the foamed asphalt is in contact with the aggregate, the asphalt...

AI Technical Summary

Problems solved by technology

However, the above scheme has the following problems: 1. During the asphalt foaming process, normal temperature water is directly sprayed on the asphalt in a high-temperature molten state, so that the normal temperature water will quickly evaporate after contacting the asphalt, and there is not much moisture entering the interior of the asphalt , so that the foaming rate in the asphalt is not high

2. Since the asphalt is in motion, the contact time between normal temperature water and asphalt is relatively short, resulting in low foaming rate

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