Diffusion behavior analysis method for multiple regeneration processes of asphalt

By analyzing the aging degree and diffusion behavior of regenerated asphalt, the relationship between diffusion depth and average diffusion rate is constructed, and the problem of complexity of diffusion behavior of new and old asphalt during multiple regeneration of asphalt is solved, and the accuracy of analysis and the performance of asphalt mixture are improved.

CN119715264AActive Publication Date: 2025-03-28NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Application Number
CN202411926378.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-03-28
Estimated Expiration
2044-12-25

AI Technical Summary

Technical Problem

The prior art is difficult to accurately analyze and quantify the complex diffusion behavior between new and old asphalt during multiple regeneration of asphalt, which affects the service performance and service life of regenerated asphalt pavement.

Method used

By obtaining the degree of asphalt aging in regenerated asphalt, generating severe and mild aging stages, analyzing the distribution of diffusion depth and average diffusion rate, collecting time sequence data, predicting the average diffusion rate, constructing the relationship between diffusion depth-average diffusion rate, and performing data reconstruction and analysis.

Benefits of technology

Quantitative characterization of the diffusion behavior of new and old asphalt during multiple regeneration of asphalt is achieved, improving the accuracy of the analysis and helping to optimize the design and performance of asphalt mixture.

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Abstract

The invention discloses a diffusion behavior analysis method for multiple regeneration processes of asphalt, and relates to the technical field of asphalt regeneration, the method comprises the following steps: firstly, obtaining the aging degree of regenerated asphalt, carrying out weight analysis on diffusion behaviors, and distinguishing a heavy aging stage and a light aging stage; then, according to the two stages, the distribution condition of the diffusion depth and the average diffusion rate is generated, and corresponding shallow layer time sequence data is collected; and establishing a relationship between the shallow diffusion depth and the average diffusion rate, and generating deep diffusion depth time sequence data through data reconstruction. And finally, constructing a diffusion depth-average diffusion rate deep relationship by using deep and shallow data, and analyzing the diffusion behavior of the recycled asphalt. According to the method, the diffusion phenomenon between the new asphalt and the old asphalt is quantified, the analysis accuracy of multiple regeneration processes of the asphalt is improved, and the method has important significance on an asphalt regeneration technology.
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