蒸发方式对乳化沥青残留物高温流变性能与疲劳性能影响分析  

Effects Analysis of Evaporation Methods on High Temperature Rheological and Fatigue Properties of Emulsified Asphalt Residue

作　　者：宋亮 高冲 范鹏 仰建岗[4] 高杰 Song Liang;Gao Chong;Fan Peng;Yang Jiangang;Gao Jie(Xinjiang Transportation Investment(Group)Co.,Ltd.,Urumqi 830002,China;Xinjiang Jiaotou Construction Management Co.,Ltd.,Urumqi 830099,China;Key Laboratory of China's Transportation Industry for Highway Engineering Technology in Arid Desert Region,Urumqi 830002,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;College of Transportation and Logistics Engineering,Xinjiang Agricultural University,Urumqi 830000,China)

机构地区：[1]新疆交通投资(集团)有限责任公司,新疆维吾尔自治区乌鲁木齐830002 [2]新疆交投建设管理有限责任公司,新疆维吾尔自治区乌鲁木齐830099 [3]干旱荒漠区公路工程技术交通运输行业重点实验室,新疆维吾尔自治区乌鲁木齐830002 [4]华东交通大学土木建筑学院,江西南昌330013 [5]新疆农业大学交通与物流工程学院,新疆维吾尔自治区乌鲁木齐830000

出　　处：《市政技术》2024年第11期23-28,37,共7页Journal of Municipal Technology

基　　金：国家自然科学基金(52368064);江西省自然科学基金(20232BAB204085);天山英才科技创新领军人才(2022TSYCLJ0045)。

摘　　要：为了研究蒸发方式对乳化沥青残留物高温流变性能和疲劳性能的影响,采用胶体磨法制备了阳离子乳化沥青,并掺入苯乙烯-丁二烯橡胶(SBR)以改善其高温流变性能;采用动态剪切流变仪(Dynamic Shear Rheometer,DSR)分析不同蒸发方式下乳化沥青残留物的流变特性,并利用线性振幅扫描(Linear Amplitude Sweep,LAS)试验评估其疲劳性能。研究结果表明:当SBR掺量达到3%及以上时,不同蒸发方式对乳化沥青残留物性能的影响差异较小;而采用低温蒸发(ASTM)法、SBR掺量低于3%时,乳化沥青残留物表现出了更加优异的适应性。此外,LAS试验结果显示,掺入SBR可显著提升乳化沥青残留物的疲劳寿命,且采用ASTM法制备的乳化沥青残留物的性能更接近实际情况。红外光谱试验结果显示,掺入SBR或采用不同的蒸发方式主要发生的是物理反应,采用ASTM法能有效减少羰基(C=O)和亚砜基(S=O)官能团的伸缩振动,进而降低乳化沥青残留物的老化程度。因此,建议在实验室内进行疲劳寿命测试时优先选择ASTM法。In order to study the effect of evaporation methods on the high temperature rheological and fatigue properties of emulsified asphalt residues,cationic emulsified asphalt was prepared by colloid mill method and styrene butadiene rubber(SBR) was added to improve its high temperature rheological properties.A dynamic shear rheometer(DSR)was used to analyze the rheological properties of emulsified asphalt residues by different evaporation methods.A linear amplitude sweep(LAS) test was used to evaluate the fatigue performance.The research results indicate that when the SBR content reaches 3% or more,there is little difference in the effect of different evaporation methods on the residual properties of emulsified asphalt residue;When low temperature evaporation(ASTM) method is applied and SBR dosage is below 3%,emulsified asphalt residue exhibits better adaptability.In addition,the LAS test results show that the addition of SBR can significantly improve the fatigue life of emulsified asphalt residue.The performance of emulsified asphalt residues prepared by ASTM method is closer to the actual situation.The infrared spectroscopy test results show that the addition of SBR or the use of different evaporation methods mainly involves physical reactions.The ASTM method can effectively reduce the stretching vibration of carbonyl(C=O) and sulfoxide(S=O)functional groups,thereby the aging degree of emulsified asphalt residue will be reduced.Therefore,it is recommended to prioritize the ASTM method for conducting fatigue life test in the laboratory.

关 键 词：乳化沥青残留物 高温流变性能 疲劳性能 SBR DHM法 ASTM法 

分 类 号：U414[交通运输工程—道路与铁道工程]