不同再生剂类型对高掺量RAP沥青混合料性能影响综述

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中图分类号：U414 文献标志码：A 文章编号：1003-5168（2025）17-0086-07

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.17.016

AReviewonthe EffectsofDifferentRegenerant Typeson the Performance of High RAP Content Asphalt Mixtures

LIANG Cancan YANG Zhouxuan ZHAO Zhenghao FENG Ponan WANG Zhenfeng （College of Mechanical and Electrical Engineering，Henan Agricultural University，Zhengzhou 45O2， China）

Abstract：[Purposes]To investigate the influence mechanisms of petroleum-based，bio-based，and composite rejuvenators on the road performance of high RAP content asphalt mixtures，addressing issues such as insuficient crack resistance and poor workability.[Methods] The compositional characteristics of three types of rejuvenators were systematized through literature review; the influence paterns of rejuvenators on mixture performance were analyzed based on Marshall stability，dynamic modulus，MSCR， and other tests.[Findings] Petroleum-based rejuvenators exhibit strong softening ability，primarily reducing asphalt viscosity through physical softening;bio-based rejuvenators，rich in polar functional groups，can chemically modify aged asphalt; composite rejuvenators comprehensively improve performance through synergistic effects. Appropriate dosage can make key indicators of high RAP mixtures approach those of conventional mixtures.[Conclusions] Rejuvenator type and dosage are key factors for performance recovery. Composite rejuvenators demonstrate significant comprehensive advantages，and future research should focus on long-term aging mechanisms，standard specifications，and novel rejuvenator development.

Keywords： high RAP content; rejuvenator types; road performance; influence mechanisms

0 引言

高效利用再生沥青混合料（RAP）是实现公路工程绿色循环与“双碳”目标的重要途径。（剩余11588字）