中国塑料 ›› 2025, Vol. 39 ›› Issue (8): 19-25.DOI: 10.19491/j.issn.1001-9278.2025.08.004

• 材料与性能 • 上一篇    下一篇

HVA/改性蒙脱土/SBS高黏复合改性沥青耐久性研究

刘岚彬1(), 刘召伟2, 孙吉书1(), 郭艳芳3, 濮夏天1   

  1. 1.河北工业大学土木与交通学院,天津 300401
    2.中国路桥工程有限责任公司,北京 100011
    3.河北水利电力学院交通工程系,河北 沧州 061001
  • 收稿日期:2024-09-22 出版日期:2025-08-26 发布日期:2025-07-30
  • 通讯作者: 孙吉书(1976—),男,副教授,从事道路工程材料研究,2634192065@qq.com
    E-mail:xuedanxuan123@163.com;2634192065@qq.com
  • 作者简介:刘岚彬(2000—),男,研究生,从事道路建筑材料研究,xuedanxuan123@163.com
  • 基金资助:
    天津市交通运输科技发展项目(2022?18)

Study on durability of asphalt modified by HVA/modified montmorillonite/SBS high viscosity composites

LIU Lanbin1(), LIU Zhaowei2, SUN Jishu1(), GUO Yanfang3, PU Xiatian1   

  1. 1.School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China
    2.China Road and Bridge Engineering Co LTD,Beijing 100011,China
    3.Department of Transportation Engineering,Hebei University of Water Resources and Electric Engineering,Cangzhou 061001,China
  • Received:2024-09-22 Online:2025-08-26 Published:2025-07-30
  • Contact: SUN Jishu E-mail:xuedanxuan123@163.com;2634192065@qq.com

摘要:

为了改善高黏沥青的耐久性,采用自制改性蒙脱土、苯乙烯⁃丁二烯⁃苯乙烯(SBS)与高熔点乙烯共聚物(HVA)制备了改性蒙脱土高黏复合改性沥青(GM⁃HVA)。通过黏韧性分析、短期老化、多重应力蠕变与热稳定性分析试验,将GM⁃HVA、蒙脱土高黏复合改性沥青(M⁃HVA)和含量为12 %(质量分数,下同)的进口高黏改性沥青(TPS)对比。结果发现,GM⁃HVA具有更大的黏度、更强的韧性、更优的抗热氧老化能力和更强的抗永久变形能力,表现出更好的热稳定性。此外,通过车辙试验、低温弯曲试验和浸水马歇尔试验,评估了不同高黏沥青制备的试件在短期老化和长期老化后的高低温稳定性和抗水损害性能。结果显示,GM⁃HVA混合料的抗老化性能最佳,高、低温性能和抗水损害性能均优于其他2种高黏改性沥青。综合而言,GM⁃HVA表现出更优的耐久性。

关键词: 高黏复合改性沥青, 耐久性, 蒙脱土, 苯乙烯?丁二烯?苯乙烯, 高熔点乙烯共聚物

Abstract:

In this study, a modified montmorillonite high⁃viscosity composite modified asphalt (GM⁃HVA) was developed by using self⁃modified montmorillonite, styrene⁃butadiene⁃styrene (SBS), and high⁃melting⁃point ethylene copolymer (HVA) to enhance the durability of asphalt. Through a series of comprehensive tests including viscosity⁃toughness analysis, short⁃term aging, multiple stress creep recovery, and thermal stability evaluation, GM⁃HVA was compared with conventional montmorillonite high⁃viscosity asphalt (M⁃HVA) and an imported modified asphalt containing 12 wt% TPS. Results indicated that GM⁃HVA exhibited superior thermal stability with higher viscosity, greater toughness, and significantly improved resistance to thermal oxidative aging and permanent deformation compared to M⁃HVA and the imported modified asphalt. Additional evaluation was carried out to evaluate the high⁃ and low⁃temperature stability and water damage resistance of asphalt samples through rutting tests, low⁃temperature bending tests, and immersion Marshall tests after both short⁃term and long⁃term aging. The results revealed that GM⁃HVA mixture presented the best anti⁃aging performance, and its high⁃ and low⁃temperature stability and water damage resistance were superior to the other two samples. These findings collectively demonstrate that GM⁃HVA offers superior durability compared to conventional high⁃viscosity modified asphalts.

Key words: high?viscosity composite modified asphalt, durability, montmorillonite, styrene?butadiene?styrene, high?melting?point ethylene copolymer

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