长沙理工大学学报(自然科学版)
不同纤维及沥青复合改性BK-10混合料路用性能
作者:
作者单位:

(1.长沙理工大学 交通运输工程学院,湖南 长沙 410114;2.山东省交通科学研究院,山东 济南 250102; 3. 湖南建工交通建设有限公司,湖南 长沙 410004; 4.佛山市路桥建设有限公司,广东 佛山 528042)

作者简介:

通讯作者:

关宏信(1974—)(ORCID:0000-0001-7264-7469),男,教授,主要从事路面结构与材料方面的研究。 E-mail:guanhongxincs@163.com

中图分类号:

U416.2

基金项目:

国家自然科学基金资助项目(52078062);湖南省自然科学基金资助项目 (2020JJ4604)


Pavement performance of BK-10 mixtures modified with different fibers and asphalts
Author:
Affiliation:

(1.School of Tranffic & Transportation Engineering,Changsha University of Science & Technology,Changsha 410114,China; 2. Shandong Academy of Transportation Research, Ji´nan 250102,China;3.HNCEG Communications Construction Co., Ltd., Changsha 410004,China; 4. Foshan Highway & Bridge Construction Co., Ltd.,Foshan 528042,China)

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    摘要:

    【目的】对目标空隙率为13%的半开级配沥青混合料所用沥青和纤维进行优选,以提高混合料路用性能,实现其功能性与耐久性的平衡。【方法】对不同的沥青、纤维和矿粉进行8种组合制备不同的半开级配沥青混合料,通过开展室内试验,测试各混合料的高温稳定性、低温抗裂性和水稳定性等路用性能,对比分析沥青、纤维和矿粉对沥青混合料路用性能的影响,并基于表面能理论以及通过开展动态剪切流变试验和延度试验,进一步分析论证复合沥青和复合纤维改善混合料路用性能的原因和效果。【结果】复合沥青与集料的黏附性最强,复合纤维与沥青胶浆结合能力最好。【结论】采用5%苯乙烯-丁二烯-苯乙烯(styrene-butadiene-styrene,SBS)与15%橡胶粉复合改性沥青,以及用复合纤维(木质素纤维与玄武岩纤维质量比为1∶1)制备的半开级配沥青混合料的路用性能最优。

    Abstract:

    [Purposes] This study explored the optimal type of asphalts and fibers used in producing the semi-open graded asphalt mixture with the target voids of 13%, in order to improve the pavement performance of the mixture and achieve the balance between functionality and durability. [Methods] The semi-open graded asphalt mixture prepared by 8 different kinds of asphalts, fibers and mineral powder was selected. Laboratory tests were carried out to test the pavement performance of each mixture such as high-temperature stability, low-temperature crack resistance and water stability, and the influence of the asphalt, fiber and mineral powder on the pavement performance of asphalt mixture was analyzed. Based on the surface energy theory, dynamic shear rheological test and ductility test, the improving mechanisms of the composite asphalt and hydrid fiber were further analyzed and demonstrated. [Findings] The adhesion of the composite asphalt and aggregate was the strongest, and the bonding ability of the hybrid fiber and asphalt mortar was the best. [Conclusions] 5% styrene-butadiene-styrene (SBS), 15% rubber powder modified asphalt and hybrid fiber (lignin fiber and basalt fiber with the mass ratio of 1∶1) can provide the best pavement performance for the semi-open graded asphalt mixture .

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引用本文

关宏信,于凯辉,徐英杰,等.不同纤维及沥青复合改性BK-10混合料路用性能[J].长沙理工大学学报(自然科学版),2023,20(5):76-83.
GUAN Hongxin, YU Kaihui, XU Yingjie, et al. Pavement performance of BK-10 mixtures modified with different fibers and asphalts[J]. Journal of Changsha University of Science & Technology (Natural Science),2023,20(5):76-83.

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  • 收稿日期:2022-04-01
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  • 在线发布日期: 2023-11-15
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