Chemical Industry and Engineering Progress ›› 2022, Vol. 41 ›› Issue (S1): 351-365.DOI: 10.16085/j.issn.1000-6613.2022-1474

• Materials science and technology • Previous Articles     Next Articles

Low temperature performance of high modulus asphalt binder and mixtures: a review

LI Hao(), GUO Rongxin(), YAN Yong   

  1. Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
  • Received:2022-08-09 Revised:2022-08-24 Online:2022-11-10 Published:2022-10-20
  • Contact: GUO Rongxin

高模量沥青及其混合料低温性能研究进展

李昊(), 郭荣鑫(), 晏永   

  1. 昆明理工大学建筑工程学院,云南省土木工程防灾重点实验室,云南 昆明 650500
  • 通讯作者: 郭荣鑫
  • 作者简介:李昊(1998—),男,硕士研究生,研究方向为道路结构与材料。E-mial:lihaokust@163.com
  • 基金资助:
    云南省科技厅重大科技专项(202102AG050043)

Abstract:

High modulus asphalt mixture has become a favorable material for constructing long-life road with heavy traffic because of its outstanding rutting resistance and fatigue resistance. However, insufficient low temperature performance is the most important factor restricting its application and development. In recent years, how to improve the low temperature performance of high modulus asphalt and mixture has become a research focus in the field of pavement. This paper reviewed the four improving main technics of adding thermoplastic elastomers, oil-based modifiers, inorganic powder materials to the binder and fibers to the mixture. The relationship between the amount of modified material, modification process parameters and modification effect of these four improving technics was emphatically expounded, and the modification mechanism was summarized. Finally, the future research emphases and development trend of high modulus asphalt and mixture in low temperature performance were discussed, aiming to overcome the limitation of application scope of high modulus asphalt mixture and promote the application of high modulus asphalt mixture in long-life road with heavy traffic.

Key words: road engineering, long-life pavement, high modulus asphalt mixture, low temperature performance

摘要:

高模量沥青混合料因其出众的抗车辙性能和抗疲劳性能成为构建重载交通长寿命路面的理想材料,但低温性能差成为制约其应用和发展的最重要因素。近年来,如何改善高模量沥青及其混合料低温性能成为了路面领域的研究热点。本文综述了在胶结料中添加热塑性弹性体、油基改性剂、纳米材料以及在混合料中添加纤维这4种主要技术路径,重点阐述了这4种技术路径的改性材料用量、改性工艺参数与改性效果之间的关联,并对其改性机理进行总结。最后展望了高模量沥青及其混合料在低温性能方面的未来研究重点和发展趋势,即旨在克服高模量沥青混合料应用范围的限制,进而推动高模量沥青混合料在重载长寿命路面中的应用。

关键词: 道路工程, 长寿命路面, 高模量沥青混合料, 低温性能

CLC Number: 

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