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材料导报  2023, Vol. 37 Issue (16): 22010171-6    https://doi.org/10.11896/cldb.22010171
  无机非金属及其复合材料 |
不同温拌剂对高黏沥青流变及微观特性影响研究
王言磊1, 陆军2, 梁鹏飞1, 罗婷3,4, 颜川奇3,4,*
1 山东省路桥集团有限公司, 济南 250000
2 中国市政工程西南设计研究总院有限公司,成都 610081
3 西南交通大学土木工程学院, 成都 610031
4 道路工程四川省重点实验室, 成都 610031
Influence of Different Warm Mix Agents on Rheological and Microscopic Properties of High-viscosity Asphalt
WANG Yanlei1, LU Jun2, LIANG Pengfei1, LUO Ting3,4, YAN Chuanqi3,4,*
1 Shandong Road and Bridge Group Co., Ltd., Jinan 250000, China
2 China Southwest Design and Research Institute of Municipal Engineering, Chengdu 610081, China
3 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
4 Highway Engineering Key Laboratory of Sichuan Province, Chengdu 610031, China
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摘要 高黏沥青已在我国取得广泛应用,向高黏沥青中添加温拌剂可改善其施工和易性,但目前系统性分析不同温拌剂对高黏沥青流变性能和微观特性影响的研究较少。本工作先用布氏黏温曲线确定不同温拌剂(ACMP、Sasobit、WCO、Evotherm)对高黏沥青降黏效果相同时对应的掺量,并利用红外光谱试验从分子层面分析不同温拌剂对高黏沥青微观特性的影响,再利用温度扫描、蠕变试验、线性振幅扫描试验(LAS)研究不同温拌剂对高黏沥青流变性能的影响。研究结果表明:Sasobit为蜡质温拌剂,在温度低于熔点时以晶体状态存在,使得高黏沥青的高温性能和蠕变恢复性能得到提升,但低温性能和抗疲劳性能下降。温拌剂Evotherm为季铵盐表面活性剂,加入其可改变沥青质分子间的表面张力,不利于高黏沥青的高温性能和抗疲劳性能。温拌剂ACMP、WCO具有润滑作用,加入它们可提高高黏沥青的抗疲劳性能。综合不同温拌剂对高黏沥青物理性能、流变性能及微观特性影响分析,推荐采用ACMP温拌剂。
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王言磊
陆军
梁鹏飞
罗婷
颜川奇
关键词:  温拌剂  高黏沥青  红外光谱  温度扫描  线性振幅扫描试验    
Abstract: High-viscosity asphalt has been widely used in China. It is quite common to use warm mix agents to improve the workability for high-viscosity asphalt. However, not many researches have been conducted to investigate the influence of warm mix agents on the rheological and micro properties of high-viscosity asphalt. In this paper, the Brookfield test is first conducted to determine the optimum dosage of different warm mix agents (ACMP, Sasobit, WCO, Evotherm) for high-viscosity asphalt. The microscopic property changes brought by the warm mix agents are investigated using FTIR. Then the temperature sweep test, creep test and linear amplitude sweep test (LAS) were used to study the influence on the rheological properties of high viscosity asphalt. The research results show that Sasobit is a waxy warm mix agent, which shows crystalline state when the temperature is lower than the melting point. This improves the high-temperature performance and creep recovery performance of high-viscosity asphalt but decreases the low-temperature performance and fatigue resistance. Evotherm is a quaternary ammonium salt surfactant. It changes the surface tension between asphaltene molecules, which has adverse effects on the high-temperature performance and fatigue resistance of high-viscosity asphalt. ACMP and WCO are basically lubricants, and their addition improves the fatigue resistance of high-viscosity asphalt. Based on the evaluation on the physical properties, rheological properties, and microscopic properties, ACMP might be recommended.
Key words:  warm mixing agent    high-viscosity asphalt    FT-IR    temperature sweep    linear amplitude sweep test
出版日期:  2023-08-25      发布日期:  2023-08-14
ZTFLH:  U414.1  
基金资助: 国家自然科学基金(52008353;51908426);中国博士后科学基金(BX20190240;2019M660097);四川省青年科技创新研究团队(2021JDTD0023;2022JDTD0015);成都科技创新研发项目(2021-YF05-01175-SN)
通讯作者:  *颜川奇,西南交通大学副教授、硕士研究生导师。2014年7月毕业于东南大学道路与桥梁专业,2020年7月于同济大学道路与机场工程专业取得博士学位,期间获得公派联合培养博士研究生资格,在威斯康星大学麦迪逊分校开展学习与研究(导师 Hussain Bahia)。主要从事高性能改性沥青材料表征与研发,以第一作者或通信作者身份发表SCI收录论文20余篇。Ycq@swjtu.edu.cn   
作者简介:  王言磊,山东省路桥集团有限公司总经理,高级工程师,2004年7月于兰州交通大学获得工学学士学位。主要从事桥梁施工的研究工作。
引用本文:    
王言磊, 陆军, 梁鹏飞, 罗婷, 颜川奇. 不同温拌剂对高黏沥青流变及微观特性影响研究[J]. 材料导报, 2023, 37(16): 22010171-6.
WANG Yanlei, LU Jun, LIANG Pengfei, LUO Ting, YAN Chuanqi. Influence of Different Warm Mix Agents on Rheological and Microscopic Properties of High-viscosity Asphalt. Materials Reports, 2023, 37(16): 22010171-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22010171  或          http://www.mater-rep.com/CN/Y2023/V37/I16/22010171
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