2024 PHD-2 ONGOING
Release time: 2024/07/25 Publisher： original Views：
Aging Mechanism and Phase Structure in Heterogeneous System of SBS modified Asphalt
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PhD Student: Zhang Junjie |
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Project Background:
Improving aging resistance properties of SBS-modified asphalt could be an effective solution for both resource saving and environmental conservation. Although aging behavior has been largely discussed in the asphalt industry, SBS-modified asphalt has a complicated aging mechanism due to the presence of SBS copolymer and stabilizer. Thus, the project aims at improving the anti-aging properties and durability of SBS modified asphalt using organic materials such as waste rubber particles and carbon black, addressing the aging resistance fundamentally through a phase structure perspective.
Aims & Goals:
To propose a phase structure definition based on mechanical states, and establish aging characterization indicators for SBS-modified asphalt based on the phase structure;
To establish a method for correlating mechanical states with rheological parameters;
To analyze the composite aging mechanisms in the multiphase system of SBS-modified asphalt, including modifiers, stabilizers, and base asphalt.
Outcomes:
CONFERENCE ORAL REPORT 1: 'Quantitative Characterization of the Blending and Diffusion of Virgin and Reclaimed Asphalt in Recycled Asphalt Mixtures' in the World Transportation Convention 2024 (WTC2024).
