中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

Journal of Chongqing Jiaotong University(Natural Science) ›› 2020, Vol. 39 ›› Issue (02): 81-86.DOI: 10.3969/j.issn.1674-0696.2020.02.13

• Highway & Railway Engineering • Previous Articles     Next Articles

Anti-Skidding Performance of Rubber Modified Asphalt Pavement Based on Viscoelasticity

WU Guoxiong1,2, YE Xinyu1, YU Miao1, YANG Dantong3   

  1. (1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. Department of Traffic and Municipal Engineering, Chongqing Vocational College of Architectural Engineering, Chongqing, China; 3. Integrated Planning Section, Leshan Institute of Transportation Planning, Leshan 614000, Sichuan, China)
  • Received:2019-01-03 Revised:2019-12-19 Online:2020-02-20 Published:2020-02-20

基于黏弹性的橡胶改性沥青路面抗滑性能研究

吴国雄1,2,叶新雨1,余苗1,杨丹彤3   

  1. (1. 重庆交通大学 土木工程学院,重庆 400074; 2. 重庆建筑工程职业学院 交通与市政工程系,重庆 400072; 3. 乐山市交通规划研究院 综合规划科,四川 乐山 614000)
  • 作者简介:吴国雄(1966—),男,湖北崇阳人,教授,博士生导师,主要从事道路工程研究工作。E-mail:wgx_ph.d@163.com。
  • 基金资助:
    国家自然科学基金青年基金项目(51608085)

Abstract: In order to study the effect of crumb rubber on the anti-skidding performance of asphalt pavement, based on SMA-13 asphalt mixture, the mixture ratio design of rubber modified asphalt mixture was carried out by using the internal mixing method to replace the corresponding aggregate with equal amount of rubber particles. The content of crumb rubber added were 0%, 1%, 3% and 5% respectively, and four groups of asphalt mixtures were prepared, including SMA-13A, SMA-13B, SMA-13C and SMA-13D. Rotary compacted specimen and rutting specimen were prepared respectively and the temperature of the specimen was maintained at 10℃, 20℃, 30℃, 40℃ and 50℃. The AMPT test was carried out by using uniaxial compression test method and the dynamic modulus E and the phase angle φ were obtained. Meanwhile, the anti-skidding performance test was carried out by using the self-developed tire-road dynamic friction coefficient test system, and the dynamic friction coefficient f was obtained. The results show that the order of the viscoelasticity of asphalt mixtures is SMA-13D>SMA-13C>SMA-13B>SMA-13A, which indicates that the viscoelasticity of asphalt mixtures is improved after adding crumb rubber, and the greater the content, the better the viscoelasticity. When the specimen temperature is at 10℃, 20℃, 30℃, 40℃ and 50℃, the correlation between the dynamic friction coefficient f and the dynamic modulus E of asphalt mixtures is basically the same, indicating that the temperature of the asphalt mixture specimen has little influence on the correlation between f and E. Under the dynamic load of the vehicle, with the increase of crumb rubber content R, the dynamic modulus E of the asphalt mixtures decreases, the dynamic friction coefficient f increases but the phase angle φ decreases, indicating that the crumb rubber particles can improve the viscoelasticity of asphalt pavement, and thus improve the anti-skidding performance of asphalt pavement.

Key words: highway engineering, asphalt mixture, anti-skidding performance, crumb rubber, viscoelasticity, dynamic friction coefficient

摘要: 为研究橡胶颗粒对沥青路面抗滑性能的影响,基于SMA-13沥青混合料,采用内掺法以橡胶颗粒等量替代相应的集料进行橡胶改性沥青混合料配合比设计,橡胶颗粒掺量R=0%、1%、3%、5%,配制得到4组沥青混合料SMA-13A、SMA-13B、SMA-13C、SMA-13D,分别制备旋转压实试件及车辙板试件,保持试件温度T=10、20、30、40、50℃。采用单轴压缩试验方法进行AMPT简单性能试验,得到动态模量E和相位角φ;利用自主研发的轮胎-路面动态摩擦系数测试系统进行抗滑性能试验,得到动态摩擦系数f。结果表明:沥青混合料的黏弹性能顺序为SMA-13D>SMA-13C>SMA-13B>SMA-13A,说明掺橡胶颗粒后,沥青混合料的黏弹性能得到了提高,且掺量越大,黏弹性能越好;在试件温度T=10、20、30、40、50℃下,沥青混合料的动态摩擦系数f与动态模量E的相关性基本相同,说明沥青混合料试件的温度对f与E相关性的影响不大;在车辆动态荷载作用下,随着橡胶颗粒掺量R的增加,沥青混合料的动态模量E减小,动态摩擦系数f增大,而相位角φ减小,说明橡胶颗粒的掺入提高了沥青路面的黏弹性能,从而提高了沥青路面的抗滑性能。

关键词: 道路工程, 沥青混合料, 抗滑性, 橡胶颗粒, 黏弹性, 动态摩擦系数

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