中国塑料 ›› 2025, Vol. 39 ›› Issue (9): 86-92.DOI: 10.19491/j.issn.1001-9278.2025.09.014

• 加工与应用 • 上一篇    下一篇

沥青抗剥落剂对铁尾矿⁃沥青黏附性机理研究

吕炳金1,2,3(), 颜峰1,2,3, 李俊杰1,2,3, 保令谌1,2,3, 黄凯勇1,2,3   

  1. 1.昆明理工大学,建筑工程学院,昆明 650500
    2.云南省土木工程防灾重点实验室,昆明 650500
    3.云南省绿色建造与智慧运维国际联合实验室,昆明 650500
  • 收稿日期:2024-10-25 出版日期:2025-09-26 发布日期:2025-09-22
  • 作者简介:吕炳金,1339149394@qq.com

Study on adhesion mechanism between iron tailings and asphalt modified with anti⁃stripping agents

LYU Bingjin1,2,3(), YAN Feng1,2,3, LI Junjie1,2,3, BAO Lingchen1,2,3, HUANG Kaiyong1,2,3   

  1. 1.Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China
    2.Yunnan Key Laboratory of Disaster Reduction in Civil Engineering,Kunming 650500,China
    3.International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province,Kunming 650500,China
  • Received:2024-10-25 Online:2025-09-26 Published:2025-09-22

摘要:

为研究添加沥青抗剥落剂对铁尾矿与沥青之间黏附性能的影响,以70号基质沥青为原材料,将XT⁃1、PA⁃1、ZL⁃16这3种不同沥青抗剥落剂加入其中以制备改性沥青。并且评价其对铁尾矿沥青混合料的路用性能,同时采用表面自由能、红外光谱等手段,研究其对铁尾矿石与沥青界面黏结作用。结果表明,添加沥青抗剥落剂后,改善了沥青混合料的路用性能,其中AC⁃PA的残留稳定度、冻融劈裂强度比以及高温稳定性方面的提升最为显著,分别提高了14.3 %、17.7 %、61.4 %。

关键词: 沥青抗剥落剂, 路用性能, 沥青混合料, 铁尾矿, 界面黏结力

Abstract:

This study investigated the adhesion mechanism between iron tailings and asphalt modified with anti⁃stripping agents. Three commercial anti⁃stripping agents (XT⁃1, PA⁃1, and ZL⁃16) were incorporated into 70# base asphalt to prepare modified binders. The road performance of iron tailings asphalt mixtures was evaluated, while surface free energy analysis and Fourier⁃transform infrared spectroscopy were employed to characterize the interfacial adhesion properties. Results indicated that all anti⁃stripping agents significantly enhanced mixture performance, with PA⁃1⁃modified asphalt showing the most notable improvements: 14.3 % increase in residual stability, 17.7 % enhancement in freeze⁃thaw splitting strength ratio, and 61.4 % improvement in high⁃temperature stability compared to the control. The surface free energy and chemical bonding analysis revealed the underlying mechanisms for the improved interfacial adhesion between iron tailings and modified asphalt.

Key words: asphalt anti stripping agent, road performance, asphalt mixture, iron tailings, interface adhesion force

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