Research progress on polyurethane modified asphalt

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  • 1. School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074;
    2. School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074

Received date: 2020-06-08

  Revised date: 2021-07-12

  Online published: 2021-11-02

Abstract

The development of our country's road has put forward higher requirements for pavement performance and materials.Ordinary road asphalt materials can't meet the needs of high-grade pavement,so its road performance must being improved through modification.The new polyurethane polymer material has excellent properties such as wear resistance,low temperature resistance and aging resistance,and has excellent structural advantages.In recent years,it has been studied by some scholars to replace the commonly used polymer modifier in the market with polyurethane.Unfortunately,the modification of its application in the pavement asphalt is still in the preliminary stage of exploration.The research progress of polyurethane as a new asphalt modified material was summarized from the aspects of preparation process,modification mechanism,composite modification with other materials and road performance evaluation.Finally,some problems of polyurethane modified asphalt were put forward,and prospected the future development trend.

Cite this article

Cao Xuejuan, Peng Shuo, Ding Yongjie, Li Kai . Research progress on polyurethane modified asphalt[J]. New Chemical Materials, 2021 , 49(10) : 213 -218 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.10.045

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