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
重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2025, Vol. 44 ›› Issue (10): 1-9.DOI: 10.3969/j.issn.1674-0696.2025.10.01

• 道路与铁道工程 •    

基于频率谱和温度谱的纤维沥青混合料动态回弹模量研究

李耘宇1，徐帆2，王永生3，刘浩3，彭龙帆3   

  1. (1.武汉理工大学 交通与物流工程学院，湖北 武汉 430063；2. 武汉理工大学 船海与能源动力工程学院，湖北 武汉 430063； 3. 中国建筑第二工程局有限公司，北京 100176)
  • 收稿日期:2024-10-14 修回日期:2025-04-30 发布日期:2025-11-06
  • 作者简介:李耘宇(1984—)，男，湖南平江人，副教授，博士，主要从事纤维增强沥青黏弹性能方面的研究。E-mail：liyunyu@whut.edu.cn
  • 基金资助:
    国家自然科学基金青年科学基金项目（51708433）

Dynamic Resilient Modulus of Fiber Asphalt Mixture Based on Frequency Spectrum and Temperature Spectrum

LI Yunyu1，XU Fan2，WANG Yongsheng3，LIU Hao3，PENG Longfan3   

  1. (1. School of Transportation and Logistics Engineering，Wuhan University of Technology，Wuhan 430063，Hubei，China； 2. School of Naval Architecture，Ocean and Energy Power Engineering，Wuhan University of Technology，Wuhan 430063， Hubei，China；3. China Construction Second Engineering Bureau Co., Ltd.，Beijing 100176，China )
  • Received:2024-10-14 Revised:2025-04-30 Published:2025-11-06

摘要： 为了探究不同纤维种类以及温度和频率对沥青材料回弹模量的影响，基于间接拉伸试验，结合Sigmoidal函数构建了动态回弹模量频率谱和温度谱，深入研究了温度和频率对木质素纤维、 聚酯纤维和聚丙烯纤维增强沥青混合料动态回弹模量的影响。结果表明：3种纤维沥青混合料均具有显著的频率和温度敏感性，频率为10 Hz时，木质素纤维、 聚酯纤维、 聚丙烯纤维沥青混合料的回弹模量分别随温度的升高降低了22 520、 19 659、 21 108 MPa；温度为20 ℃时，三者的回弹模量分别随频率的增加增大了6 139、 6 373、 5 946 MPa。动态回弹模量变化规律体现了沥青混合料典型的黏弹性力学行为。频率谱显示，在任何频率下聚酯纤维沥青混合料的回弹模量均低于木质素纤维和聚丙烯纤维沥青混合料，表明聚酯纤维沥青混合料具有较好的耗能能力，而木质素纤维和聚丙烯纤维沥青混合料具有较好的抗变形能力。温度谱显示，低温区间聚酯纤维的回弹模量较小，抗低温开裂性能较好；高温区间木质素和聚丙烯纤维的回弹模量较大，抗高温车辙性能较优。建立的温度谱模型具有良好的精确度，可以准确预测沥青混合料在宽温度范围下的动态回弹模量。

关键词: 道路工程；纤维增强沥青混合料；动态回弹模量；黏弹性能；频率谱；温度谱

Abstract: To investigate the effects of different fiber types, temperature and frequency on the resilient modulus of asphalt materials, the frequency spectrum and temperature spectrum of dynamic resilient modulus was established by combining with Sigmoidal functions based on the indirect tensile tests. The influence of temperature and frequency on the dynamic resilient modulus of lignin, polyester, and polypropylene fiber-reinforced asphalt mixtures was studied deeply. The results demonstrate that all three fiber-modified asphalt mixtures exhibit significant frequency and temperature sensitivity. At 10 Hz, the resilient modulus of lignin-, polyester-, and polypropylene-modified mixtures decreases by 22 520, 19 659 and 21 108 MPa, respectively, with increasing temperature. At 20 ℃, the resilient modulus of the above three mixtures increases by 6 139, 6 373 and 5 946 MPa, respectively, with ascending frequency. The variation rule of dynamic resilient modulus exhibits typical viscoelastic behavior of asphalt mixtures. Frequency spectra indicate that at any frequency, the resilience modulus of polyester fiber asphalt mixture is lower than that of lignin and polypropylene fiber asphalt mixtures, which indicates that polyester fiber asphalt mixture has good energy dissipation capacity, while lignin and polypropylene fiber asphalt mixture have better deformation resistance. Temperature spectra indicate that polyester fiber exhibits a lower resilience modulus within the low temperature range and demonstrates superior resistance to low temperature cracking. Whereas lignin and polypropylene fiber exhibit a higher resilience modulus within the high temperature range and demonstrate their superior rutting resistance. The established temperature spectrum model exhibits good accuracy and can accurately predict the dynamic resilience modulus of asphalt mixtures across a wide temperature range.

Key words: highway engineering; fiber reinforced asphalt mixture; dynamic resilient modulus; viscoelasticity; frequency spectrum; temperature spectrum

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