Regeneration activator for old asphalt mixture of high type asphalt pavement

Abstract

The invention discloses a recycling utilization technology of an old asphalt mixture of a high type asphalt pavement. According to the invention, for the chemical composition change condition of the old asphalt mixture in the asphalt pavement, saturates, aromatics, colloids and asphaltenes in the asphalt are analyzed by a component method; the missing part in the old asphalt is adjusted by adding an activator according to the change of each component of the aged asphalt; the component transfer problem (commonly known as aging) of the old asphalt material in the asphalt pavement is solved from the aspect of recovering the chemical components of the old asphalt; as a result, the chemical components of the old asphalt material are re-activated, the old asphalt mixture is caused to obtain new technological performance, the original mechanical properties and pavement performance indicators of the old asphalt mixture are recovered, and the old asphalt mixture can be better utilized by pavement engineering again.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement mixture recycling, in particular to a recycling technology for high-grade asphalt pavement old asphalt mixture. Background technique [0002] At present, my country's expressway has reached 80,000 kilometers, and 10% of the road surface is repaired every year. After the asphalt pavement is damaged, most of it is removed by milling and discarded, polluting the environment, occupying land, and wasting resources. Since the 1990s, all provinces in my country have been conducting research on the modification of old asphalt, but the modification technology is single, and the utilization rate of old asphalt is not high, and some of them are even used in road bases, resulting in a great waste of resources. The invention can make 100% utilization of asphalt pavement mixture, and can be used in all levels of pavement surface layers. Contents of the invention [0003] In order to solve the defic...

AI Technical Summary

Problems solved by technology

After the asphalt pavement is damaged, most of it is removed by milling and discarded, polluting the environment, occupying land, and wasting resources

Since the 1990s, all provinces in my country have been conducting research on the modification of old asphalt, but the modification technology is single, the utilization rate of old asphalt is not high, and some of them are even used in road bases, resulting in a great waste of resources