[1]张伟,张钊,曹晖,等.表面预处理PVA纤维改性沥青的高温流变特性[J].深圳大学学报理工版,2022,39(4):409-416.[doi:10.3724/SP.J.1249.2022.04409]
 ZHANG Wei,ZHANG Zhao,CAO Hui,et al.High temperature rheological properties of surface pretreated PVA fiber modified asphalt[J].Journal of Shenzhen University Science and Engineering,2022,39(4):409-416.[doi:10.3724/SP.J.1249.2022.04409]
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表面预处理PVA纤维改性沥青的高温流变特性()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第39卷
期数:
2022年第4期
页码:
409-416
栏目:
土木建筑工程
出版日期:
2022-07-12

文章信息/Info

Title:
High temperature rheological properties of surface pretreated PVA fiber modified asphalt
文章编号:
202204007
作者:
张伟1张钊2曹晖3颉俊杰1徐华鑫1牛冬瑜2
1)甘肃路桥建设集团有限公司,甘肃兰州 730030
2)长安大学材料科学与工程学院,陕西西安 710061
3)甘肃省公路交通建设集团有限公司,甘肃兰州 730030
Author(s):
ZHANG Wei1 ZHANG Zhao2 CAO Hui3 XIE Junjie1 XU Huaxin1 and NIU Dongyu2
1) Gansu road and Bridge Construction Group Co. Ltd., Lanzhou 730030, Gansu Province, P. R. China
2) School of Materials Science and Engineering, Chang’an University, Xi’an 710061, Shaanxi Province, P. R. China
3) Gansu Highway Traffic Construction Group Co. Ltd., Lanzhou 730030, Gansu Province, P. R. China
关键词:
道路工程改性沥青聚乙烯醇纤维流变性能表面预处理
Keywords:
road engineering modified asphalt polyvinyl alcohol fiber rheological properties surface pretreatment
分类号:
U414
DOI:
10.3724/SP.J.1249.2022.04409
文献标志码:
A
摘要:
为改善聚乙烯醇(polyvinyl alcohol, PVA)纤维与沥青的相容性,采用KH-570硅烷偶联剂对PVA纤维进行了表面预处理,并通过接触角、旋转黏度、温度扫描、多重应力蠕变(multiple stress creep and recovery, MSCR)和线性振幅扫描(linear amplitude sweep, LAS)等试验,对比研究了不同掺量下原样PVA纤维(T)改性沥青和表面处理后的PVA纤维(ST)改性沥青的相容性及高温流变性能,以此评价表面处理工艺对于PVA纤维改性沥青流变性能的影响.结果表明,表面处理工艺增大了沥青和PVA纤维的相容性;相同掺量下,相较于T,ST的增黏效果、抗车辙性能以及抗永久变形能力更优,在较低应变水平下可提高沥青的疲劳寿命,但在高应力水平重复荷载作用下,T和ST对于沥青的蠕变变形能力和疲劳寿命均没有明显改善.所采用的表面预处理工艺可有效提高胶结料整体的储存稳定性、黏度和高温抗变形能力,研究结果为PVA纤维改性沥青的制备及应用提供了参考.
Abstract:
In order to improve the compatibility of polyvinyl alcohol (PVA) fiber and asphalt in application of asphalt pavement, the surface of PVA fiber is pretreated with KH-570 silane coupling agent. The tests such as contact angle, rotational viscosity, temperature scanning, multiple stress creep and recovery (MSCR) and the linear amplitude sweep (LAS) are conducted to study the compatibility and high temperature rheological properties of original PVA fiber (T) and surface treated PVA fiber (ST) modified asphalts with different contents, so as to evaluate the effect of surface modification process on the rheological properties of PVA fiber modified asphalt. The results show that the surface treatment process improves the compatibility of asphalt and PVA fiber. Compared with T, ST has better viscosity increasing effect, rutting resistance, and permanent deformation resistance at the same content, and can slightly improve the fatigue resistance of asphalt at the lower strain level. However, T and ST have no obvious improvement on creep deformation ability and fatigue life of asphalt at high stress level under repeated load. The surface pretreatment process can effectively improve the storage stability, viscosity and high temperature deformation resistance of the binder and the results provide reference for the preparation and application of PVA fiber modified asphalt.

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备注/Memo

备注/Memo:
Received: 2021- 06-08; Revised: 2022-03-22; Accepted: 2022-04-25; Online (CNKI): 2022-06-25
Foundation: National Key Research and Development Program of China (2016YFB0303103); Science and Technology Project of Transportation Department of Gansu Province (2020-05)
Corresponding author: Associate professor NIU Dongyu. E-mail: dongyu.niu@chd.edu.cn
Citation: ZHANG Wei, ZHANG Zhao, CAO Hui, et al. High temperature rheological properties of surface pretreated PVA fiber modified asphalt [J]. Journal of Shenzhen University Science and Engineering, 2022, 39(4): 409-416.(in Chinese)
基金项目:国家重点研发计划资助项目(2016YFB0303103);甘肃省交通运输厅科技资助项目(2020-05);公路建设与养护技术、材料及装备交通运输行业研发中心(甘肃路桥建设集团有限公司)开放基金资助项目(GLKF201812);陕西省住房城乡建设科技科研开发计划资助项目(2020-K11)
作者简介:张伟(1972—),甘肃路桥建设集团有限公司高级工程师.研究方向:沥青的稳定性.E-mail: zcglzx@163.com
引文:张伟,张钊,曹晖,等.表面预处理PVA纤维改性沥青的高温流变特性[J].深圳大学学报理工版,2022,39(4):409-416.
更新日期/Last Update: 2022-07-30