[1]魏建国,邹安民,李伊梁,等.海泡石改性沥青流变与抑烟性能[J].长安大学学报(自然科学版),2025,45(5):15-29.[doi:10.19721/j.cnki.1671-8879.2025.05.002]
　WEI Jian-guo,ZOU An-min,LI Yi-liang,et al.Rheological and smoke suppression properties of sepiolite-modified asphalt[J].Journal of Chang’an University (Natural Science Edition),2025,45(5):15-29.[doi:10.19721/j.cnki.1671-8879.2025.05.002]
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海泡石改性沥青流变与抑烟性能()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年5期
页码:
15-29
栏目:
道路工程
出版日期:
2025-09-30

文章信息/Info

Title:
Rheological and smoke suppression properties of sepiolite-modified asphalt
文章编号:
1671-8879(2025)05-0015-15
作者:
魏建国1; 邹安民1; 2; 李伊梁1; 黄美燕1; 3; 张凯1; 周育名1
(1. 长沙理工大学 交通学院,湖南 长沙 410114; 2. 北京中航空港建设工程有限公司,北京 101300; 3. 湖南城建职业技术学院 市政与路桥工程系,湖南 湘潭 411101)
Author(s):
WEI Jian-guo1;  ZOU An-min1; 2;  LI Yi-liang1;  HUANG Mei-yan1; 3; ZHANG Kai1;  ZHOU Yu-ming1
(1. School of Transportation, Changsha University of Science and Technology, Changsha 410114, Hunan, China; 2. Beijing Sino-Aero Construction Engineering Co., Ltd., Beijing 101300, China; 3. Department of Municipal and Road and Bridge Engineering, Hunan Urban Construction College, Xiangtan 411101, Hunan, China)
关键词:
道路工程;  海泡石;  流变性能;  抑烟性能;  气相色谱-质谱联用
Keywords:
road engineering;  sepiolite;  rheological property;  smoke suppression property;  gas chromatography-mass spectrometry coupling
分类号:
U414
DOI:
10.19721/j.cnki.1671-8879.2025.05.002
文献标志码:
A
摘要:
为推动海泡石在沥青路面工程中的应用,选用东海70号基质沥青与高纯度海泡石,采用有机改性和表面改性2种方式处理海泡石,采用气体吸附法比表面积分析、动态剪切流变仪(DSR)、温度(46 ℃～82 ℃)扫描及低温(5 ℃)延度试验对比了原样、有机改性与表面改性海泡石沥青的综合性能; 基于筛选结果,通过多应力蠕变恢复(MSCR)试验、低温弯曲梁流变(BBR)试验及线性振幅扫描(LAS)测试了不同掺量(2%、4%、6%、8%)海泡石改性沥青的高温抗车辙性、低温抗裂性与疲劳寿命; 采用气相色谱-质谱(GC-MS)联用分析了海泡石改性沥青的烟气成分,结合扫描电镜(SEM)、荧光显微(FM)成像、凝胶渗透色谱(GPC)及傅里叶变换红外光谱(FTIR)揭示了其微观作用机制。研究结果表明:海泡石改性沥青的车辙因子随海泡石掺量的增加而增大,掺量为4%～6%时高温性能最佳; 掺量为4%时低温性能最优,掺量为2%～4%时可提高沥青的疲劳寿命,掺量为2%时提升效果显著; 经有机改性和表面改性后海泡石比表面积虽有所增加,但其与沥青混合后的综合性能不如原样海泡石改性沥青; 海泡石的物理增加作用能够显著改善沥青的高温性能、低温性能和疲劳性能,且不同掺量对各性能的改善程度存在差异,同时海泡石的多孔结构还具备良好的抑烟效果。综上所述,研究成果为海泡石在道路工程沥青改性领域的实际应用提供了理论支撑与实践依据。
Abstract:
To promote the application of sepiolite in asphalt pavement engineering, the Donghai-70 base asphalt and high-purity sepiolite were selected, two methods named as the organic modification and surface modification were used to treat the sepiolite, and the comprehensive properties of original, organically modified, and surface modified sepiolite asphalt were compared through the gas adsorption for specific surface area analysis, dynamic shear rheometer(DSR), temperature(46 ℃-82 ℃)sweep, and low-temperature(5 ℃)ductility test. Based on the screening results, the high-temperature rutting resistance, low-temperature crack resistance, and fatigue life of sepiolite-modified asphalts with varying contents(2%, 4%, 6%, and 8%)were evaluated through the multiple stress creep recovery(MSCR)test, low-temperature bending beam rheometer(BBR)test, and linear amplitude sweep(LAS). The smoke composition of sepiolite-modified asphalt was analyzed via the gas chromatography-mass spectrometry(GC-MS)coupling. The microscopic interaction mechanisms were elucidated by combining the scanning electron microscopy(SEM), fluorescence microscopy(FM)imaging, gel permeation chromatography(GPC)and Fourier transform infrared(FTIR)spectroscopy. The research findings indicate that the rutting factor of the sepiolite-modified asphalt increases with the rise in sepiolite content, with the optimal high-temperature performance at content of 4%-6%. The best low-temperature performance achieves at content of 4%, while the fatigue life enhances at content of 2%-4%, and a significant improvement effect is at content of 2%. Although the specific surface area of sepiolite increases after organic modification and surface modification, the overall performance of the asphalt mixed with the modified sepiolite is inferior to that of the original sepiolite-modified asphalt. The physical addition of sepiolite can significantly improve the high-temperature performance, low-temperature performance and fatigue performance of the asphalt, with varying degrees of improvement for each performance at different contents. Additionally, the porous structure of sepiolite also provides a good smoke suppression effect. In summary, the research results provide theoretical supports and practical basis for the practical application of sepiolite in the field of asphalt modification for road engineering.1 tab, 16 figs, 43 refs.

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备注/Memo

备注/Memo:
收稿日期:2025-03-05
基金项目:湖南省教育厅科学研究项目(24A0246); 广西科技计划项目(桂科AA23062054)
作者简介:魏建国(1972-),男,河南信阳人,教授,博士研究生导师,E-mail:jianguowei9969@126.com。
通信作者:周育名(1985-),女,山东威海人,副教授,工学博士,E-mail:zym_2015@csyst.edu.cn。
更新日期/Last Update: 2025-09-30