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蔡燕霞^{1 ,2 , 3}  ,  崔雨豪¹  ,  赵云刚⁴  ,  杨    杰^{2 , 3}  ,   陈少鹏⁴

( 1 .  河北工程大学 土木工程学院 ，邯郸 056038 ;  2.  中路高科（北京） 公路技术有限公司 ，北京 100088 ;

3 .  公路建设与养护新材料技术应用交通运输行业研发中心 ，北京 100088 ;

4.  邯郸市交通运输局高速公路建设管理中心 ，邯郸 056000)

摘   要 ：为充分利用沥青路面回收料，通过高温车辙、小梁弯曲、浸水马歇尔和冻融劈裂等试验方法，分析 RAP 掺量对厂拌热再生沥青混合料路用性能的影响；通过灰靶决策模型确定 RAP 掺量的最优配比方案。结果表明： 随着 RAP 掺量增大，厂拌热再生沥青混合料的高温稳定性逐渐提高，水稳定性和低温抗裂性逐渐下降； 并且30%~ 40% 的 RAP 掺量范围内高温稳定性、低温抗裂性和水稳定性的评价指标变化速度加快 ；再生剂改善了厂拌热再生沥青混合料低温抗裂和水稳定性能；基于灰靶决策模型，最终确定添加再生剂且 RAP 掺量为40% 的沥青混合料为最佳方案。

关键词：路面工程 ；厂拌热再生 ；灰靶决策模型 ；RAP 掺量 ；再生剂 ；路用性能

中图分类号：U416. 2           

文献标志码：A            

文章编号： 1005- 8249   (2025)  02- 0131- 08 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.022

 

CAI Yanxia^{1 , 2 , 3}  ,  CUI Yuhao¹  ,  ZHAO Yungang⁴ ,  YANG Jie^2 , 3 ,  CHEN Shaopeng⁴

(1 . School of Civil Engineering ,  Hebei University of Engineering ,  Handan 056038 ,  China;  2. Zhonglu  High

Tech  (Beijing)  Highway Technology Co . ,  Ltd . ,  Beijing 100088 ,  China;  3 . Research  and

Development Center for the Application of New Materials Technology in Highway Construction and

Maintenance Transportation Industry ,  Beijing 100088 ,  China;  4. Highway  Construction Management

Center of Handan Transportation Bureau ,  Handan 056000 ,  China )

Abstract： To achieve efficient utilization of recycled asphalt pavement materials, we conducted in-depth exploration into the impact of RAP content on the road performance of factory-mixed hot recycled asphalt mixtures. This was achieved through experimental methods such as high-temperature rutting tests, small beam bending tests, immersion Marshall tests, and freeze-thaw splitting tests. By utilizing a grey target decision model and considering comprehensive performance indicators of the factory-mixed hot recycled asphalt mixtures, we determined the optimal RAP content ratio. Our research revealed that as the RAP content increases, the high-temperature stability of the mixtures gradually improves, whereas their water stability and low-temperature crack resistance gradually decrease. Notably, within the RAP content range of 30% to 40%, the rates of change in evaluation indicators for high-temperature stability, low-temperature crack resistance, and water stability accelerate. Additionally, the use of a rejuvenator optimized the low-temperature crack resistance and water stability of the mixtures. Based on the grey target decision model, we ultimately determined that the asphalt mixture with a 40% RAP content and the addition of a rejuvenator represents the optimal solution.

Key words:road surface engineering；hot mix regeneration; grey target decision model; RAP content; regenerant; road performance

作者简介：蔡燕霞  (1984—) ,  博士 ，高级工程师 ，研究方向：路面结构与材料。

通信作者：崔雨豪  (1998—) ,  硕士研究生 ，研究方向：路面结构与材料。

收稿日期：2024- 10- 30