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材料导报  2022, Vol. 36 Issue (11): 21010088-7    https://doi.org/10.11896/cldb.21010088
  无机非金属及其复合材料 |
促溶-表面处理二元复合作用对橡胶沥青性能的影响
李文博1, 柳力1,2, 刘朝晖1, 刘俊豪1
1 长沙理工大学交通运输工程学院,长沙 410114
2 长沙理工大学公路养护技术国家工程实验室,长沙 410114
Effect of the Binary Compound Method of Promoting Solution and Surface Treatment on the Performance of Rubber Asphalt
LI Wenbo1, LIU Li1,2, LIU Zhaohui1, LIU Junhao1
1 School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China
2 National Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China
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摘要 针对橡胶粉改性沥青存在高温存储稳定性差、黏度大及易离析等问题,采用NaOH溶液表面处理胶粉(CRP)和掺加辛烯聚合物橡胶反应剂(TOR)的二元复合方法制备橡胶沥青,通过沥青软化点、针入度、延度及离析试验等,确定了NaOH溶液表面处理CRP的合理浓度为2%(质量分数,下同),TOR的最佳掺量为4.5%;通过扫描电镜和红外光谱等试验,分析了NaOH和TOR对橡胶沥青的微观作用机理,并采用离析试验、弯曲梁蠕变(BBR)、动态剪切流变(DSR)和布氏旋转黏度试验等,分析二元复合改性沥青(NT-RA)的性能。结果表明:NaOH溶液可去除CRP表面杂质,改善其与沥青间的界面黏结状态,TOR可促进CRP在沥青中的溶解,且二元复合作用显著提升了橡胶沥青的储存稳定性、低温性能和高温性能,并有效降低了橡胶沥青的黏度。
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李文博
柳力
刘朝晖
刘俊豪
关键词:  道路工程  橡胶沥青  氢氧化钠溶液  辛烯聚合物橡胶反应剂  二元复合作用    
Abstract: In view of the problems of poor high-temperature storage stability, high viscosity and easy segregation of rubber powder modified asphalt, the rubber asphalt was prepared by the binary compound method of NaOH solution surface treatment on rubber powder and addition of octene polymer rubber reactant (TOR). Through tests of asphalt softening point, penetration degree, ductility and segregation, it is determined that the reasonable concentration of CRP for NaOH solution surface treatment is 2%, and the optimal content of TOR is 4.5%; through scanning electron microscopy and infrared spectroscopy tests, the microscopic mechanism of NaOH and TOR on rubber asphalt was analyzed, and the properties of binary composite modified asphalt (NT-RA) were analyzed by segregation test, bending beam creep (BBR), dynamic shear rheology (DSR) and Brinell rotational viscosity test. The results show that NaOH solution can remove impurities on the surface of CRP and improve the interfacial adhesion state between CRP and asphalt. TOR can promote the dissolution of CRP in asphalt, and the binary composite effect significantly improves the storage stability, low-temperature performance and high-temperature performance of rubber asphalt, and effectively reduces the viscosity of rubber asphalt.
Key words:  road engineering    rubber asphalt    sodium hydroxide solution    octene polymer rubber reactant    dual compound action
发布日期:  2022-06-09
ZTFLH:  U416  
基金资助: 国家重点研发项目(2018YFB1600200);国家自然科学基金(51878076);湖南省自然科学基金(2020JJ5578);湖南省教育厅优秀青年项目(20B033);长沙理工大学公路养护技术国家工程实验室开放基金(kfj180101)
通讯作者:  805296712@qq.com; 723772885@qq.com   
作者简介:  李文博,长沙理工大学博士研究生。2010年9月至2014年6月毕业于新疆大学建筑工程学院,获得学士学位;2017年6月毕业于新疆大学,获得硕士学位。于2017年7月至2019年7月在新疆农业职业技术学院从事教育教学工作。于2019年9月至今在长沙理工大学学习,主要从事智能路面结构和新材料的研究。
刘朝晖,长沙理工大学,教授,博士研究生导师。1986年9月至1990年6月毕业于长沙交通学院道路工程专业,获得学士学位;1998年9月至2000年12月毕业于湖南大学建筑与土木工程专业获得硕士学位。主要从事路面结构与材料等方面的研究工作。为国家百千万人才工程人选、国家有突出贡献中青年专家,享受国务院政府特殊津贴。主持和参与完成30余项国家、省部级科研项目,获国家科技进步二等奖2项。
柳力,长沙理工大学交通运输工程学院讲师、硕士研究生导师。2007年9月至2011年6月毕业于中南林业科技大学,获得学士学位;2011年9月至2014年6月毕业于长沙理工大学,获得道路与铁道工程硕士学位;2017年6月毕业于长沙理工大学,获得道路与铁道工程博士学位,主要从事沥青路面结构和新型路面材料的研究。
引用本文:    
李文博, 柳力, 刘朝晖, 刘俊豪. 促溶-表面处理二元复合作用对橡胶沥青性能的影响[J]. 材料导报, 2022, 36(11): 21010088-7.
LI Wenbo, LIU Li, LIU Zhaohui, LIU Junhao. Effect of the Binary Compound Method of Promoting Solution and Surface Treatment on the Performance of Rubber Asphalt. Materials Reports, 2022, 36(11): 21010088-7.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21010088  或          http://www.mater-rep.com/CN/Y2022/V36/I11/21010088
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