基于性能演变的富油胶粉再生剂-老化沥青融合行为分析  

Analysis of the Fusion Behavior of Oil-Rich Rubber Powder Rejuvenator and Aged Asphalt:A Performance Evolution Perspective

作　　者：张军 徐宁[2] 田英 胡家俊 杨祖建 李文锐 陈玉[3] ZHANG Jun;XU Ning;TIAN Ying;HU Jiajun;YANG Zujian;LI Wenrui;CHEN Yu(Qiandongnan Highway Construction and Maintenance Co.Ltd.,Kaili Economic Development Zone,Guizhou 556000,China;National&Local Joint Engineering Research Center of Transportation Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China;School of Highway,Chang’an University,Xi’an 710064,China)

机构地区：[1]黔东南公路建设养护有限公司,贵州556000 [2]重庆交通大学交通土建工程材料国家地方联合工程研究中心,重庆400074 [3]长安大学公路学院,西安710064

出　　处：《河南科学》2024年第6期874-880,共7页Henan Science

基　　金：贵州省交通运输厅科技项目(2021-122-006);国家自然科学基金项目(52078047)。

摘　　要：富油胶粉(ORR)再生剂是由餐饮废油(CWO)与胶粉(RP)在一定的工艺下共混制备的环保型生物再生剂,其综合利用了CWO和RP的优势,有助于实现老化沥青再生过程中的高低温性能均衡.然而,油胶两相的特征导致ORR再生剂与老化沥青的融合行为较为复杂,不利于洞察ORR再生剂的应用潜力.本研究设计了再生剂-老化沥青融合试验,依据不同取样深度老化沥青样品的性能演变分析了温度和时间影响下ORR再生剂-老化沥青的融合效率及特征,并通过红外光谱检测技术进行了验证.同时,对比了ORR再生剂和CWO与老化沥青融合行为的差异,以期更加明晰地展现ORR再生剂-老化沥青的融合特征.结果表明,升高温度及延长时间有利于ORR再生剂-老化沥青的融合.与130℃融合温度相比,在150℃融合温度下延长融合时间更有利于ORR再生剂与老化沥青的融合.此外,130℃的融合温度下,ORR再生剂中降解RP成分进入老化沥青滞后于CWO成分.但在150℃的融合温度下,降解RP成分进入老化沥青滞后于CWO成分的现象并不明显.整体来说,ORR再生剂与老化沥青的融合效率不及CWO,但两者的差异并不显著.建议在150℃以上拌合ORR再生剂与沥青混合料回收料(RAP),以确保ORR再生剂尽可能充分发挥再生作用.研究成果可以促进ORR再生剂的工程应用,研究方法也可以为类似研究提供参考.The oil-rich rubber powder(ORR)rejuvenator represents an environmentally friendly bio-rejuvenator created by blending catering waste oil(CWO)with rubber powder(RP)using a specific process.This formulation combines the benefits of CWO and RP,thereby facilitating the achievement of balanced high-temperature and lowtemperature performance during the rejuvenation of aged asphalt.Nonetheless,the complex fusion behavior of the ORR rejuvenator with aged asphalt,stemming from the dual-phase nature of CWO and RP,hampers a clear understanding of the application potential of the ORR rejuvenator.To address this issue,a fusion test involving the rejuvenator and aged asphalt was devised in this study.The fusion efficiency and characteristics of the ORR rejuvenator and aged asphalt under varying temperatures and durations were analyzed based on the performance evolution of aged asphalt samples from various depths.Moreover,infrared spectroscopy was employed to confirm the fusion efficiency and characteristics of the ORR rejuvenator and aged asphalt.Furthermore,a comparison was made between the fusion behavior of the ORR rejuvenator and CWO with aged asphalt to elucidate the unique fusion attributes of the former.Findings indicate that an increase in temperature and time enhances the fusion between the ORR rejuvenator and aged asphalt.Notably,prolonging the fusion time at 150 ℃ is more beneficial for the fusion process compared to the fusion temperature of 130 ℃.At 130 ℃,the entry of the RP component of the ORR rejuvenator into aged asphalt lags behind that of the CWO component.However,this lag is less pronounced at150 ℃.Although the fusion efficiency of ORR rejuvenator with aged asphalt is slightly inferior to that of CWO,the disparity is not significant.It is recommended to blend the ORR rejuvenator and RAP at temperatures exceeding150 ℃ to optimize the regenerative effects of the ORR rejuvenator.These findings hold the potential to advance the practical application of ORR rejuvenators in engineering,with the methodol

关 键 词：道路工程 餐饮废油 胶粉 生物再生剂 融合行为 老化沥青 

分 类 号：U414[交通运输工程—道路与铁道工程]