A construction method for producing asphalt recycled material by using solid granular regenerant

Abstract

The invention relates to a constructing method for producing asphalt reclaimed materials adopting solid state particulate regenerants. The constructing method comprises the following steps of (1) mixing the solid particulate regenerants with RAP according to a material compounding ratio in room temperature so as to obtain mixed materials, and after mixing, according to certain weight, loading the mixed materials into packing bags which can be dissolved at high temperature; and (2) conveying the packing bags loaded with the mixed materials loading the solid particulate regenerants and the RAP to heating equipment, and performing heating and melting so that the solid particulate regenerants are melted into liquid, then liquid regenerants are fully merged with and fully infiltrated in old asphalt on the surface of the RAP to react with the old asphalt, and qualified RAP reclaimed materials are obtained. According to the constructing method disclosed by the invention, the accuracy of the material compounding ratio of the regenerants and the RAP can be guaranteed, before construction, the melting process of the liquid regenerants in a storing tank can be greatly simplified, the scale checking link of measurement scales for the liquid regenerants is omitted, and relative to conventional working conditions of on-spot material taking and on-spot using for a road surface, the constructing method has the advantage that the control accuracy of aggregate gradation is high.

Description

technical field [0001] The invention relates to a production method of asphalt reclaimed material, more specifically a construction method for producing asphalt reclaimed material by using a solid granular regenerant. Background technique [0002] Common asphalt pavements are generally designed to have a service life of about 15 years. When the quality of the pavement can no longer meet the driving needs, it is often necessary to repair the asphalt pavement or remove the old pavement materials through mechanical equipment and then re-lay. These old asphalt pavement materials (hereinafter referred to as RAP) are generally recycled. Before recycling, the old asphalt in RAP is usually extracted, tested and evaluated by laboratory equipment. Usually, the asphalt in RAP will lose part of its components due to long-term exposure to wind and sun and repeated rolling by vehicles, thus reducing road performance. In order to enable RAP to restore the performance of old asphalt durin...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a construction method for producing asphalt reclaimed material by using solid granular regenerant, the main purpose of which is to overcome the disadvantages of existing RAP regenerated material production, such as long time-consuming on-site melting of regenerant and difficult to ensure the accuracy of scale calibration.