Asphalt pavement regeneration method

Abstract

The invention discloses an asphalt pavement regeneration method. The asphalt pavement regeneration method comprises the following steps: (1) milling and crushing an old asphalt pavement, recycling materials of the old pavement to an asphalt tank, heating, and stirring uniformly; (2) adding inorganic binder and organic additive to mixture of step (1), and stirring uniformly; (3) uniformly stirring asphalt regenerant and hot melting asphalt added to the mixture of step (2) so as to obtain recycled asphalt mixture; (4) paving the recycled asphalt mixture, and compressing so as to complete regeneration of the asphalt pavement. The method is simple in process, good in regeneration effect, low in cost and suitable for industrial application. The method disclosed by the invention has wide prospect in the field of asphalt pavement regeneration.

Description

technical field

[0001] The invention relates to a method for asphalt pavement regeneration. Background technique

[0002] At present, more than 90% of high-grade highways in my country are constructed using semi-rigid materials as the base and subbase of asphalt pavement. According to the design life of asphalt pavement (15-20 years), many roads that have been built in my country will gradually enter the stage of repair and maintenance. If the traditional method is adopted, a large amount of waste asphalt mixture that has been milled and planed will be discarded. On the one hand, it will cause environmental pollution. , On the other hand, it is a great waste of resources. The regeneration technology of asphalt pavement is to re-mix the old asphalt pavement with regeneration agent, new asphalt materials, new mineral materials, etc. in a certain proportion after excavation, recycling, crushing and screening, so that it can meet certain road conditions. A suite of craft techno...