摘要
为探究废机油作为沥青再生剂的可行性,本研究将沥青质量分数为1%~9%的废机油应用于不同老化程度的沥青中,制备再生沥青,并通过黏度试验、高低温流变性能试验及凝胶渗透色谱试验分析废机油再生沥青的流变特性及微观分子量分布特征,确定其最佳掺量。试验结果表明,废机油的添加能明显降低老化沥青的黏度;适量的废机油可以将老化沥青的黏度及高、低温流变性能恢复至其原始水平;废机油的添加能明显改善老化沥青的大分子及小分子的分子量分布;当废机油的掺量范围分别为7%~9%和5%~7%时,老化基质沥青与老化SBS改性沥青的黏度、高低温流变特性及分子量分布能基本恢复至与原样沥青相一致的水平。
In order to explore the feasibility of using waste engine oil as asphalt regeneration agent,this study applies 1%~9%(weight fraction)waste engine oil to asphalt with different aging degrees to prepare recycled asphalt,and analyzes the rheological properties and microscopic molecular weight distribution characteristics of recycled asphalt from waste engine oil through viscosity test,high and low temperature rheological performance test and gel permeation chromatography test to determine its optimal dosage.The results show that the addition of waste engine oil can significantly reduce the viscosity of aged asphalt;an appropriate amount of waste oil can restore the viscosity and high and low temperature rheological properties of aged asphalt to its original level;the addition of waste engine oil can significantly improve the molecular weight distribution of large and small molecules in aged asphalt;when the dosage range of waste engine oil is 7%~9%and 5%~7%,the viscosity,high and low temperature rheological properties,and molecular weight distribution of aged matrix asphalt and aged SBS modified asphalt can basically return to the same level as the original asphalt.
作者
黄传武
王志祥
陈富廉
林国彬
HUANG Chuanwu;WANGZ Zhixiang;CHEN Fulian;LIN Guobin(Guangdong Jiaoke Testing Co.,Ltd.,Guangzhou 510420,Guangdong,China;Guangdong Jiaoke Technology R&D Co.,Ltd.,Guangzhou 510420,Guangdong,China)
出处
《广东交通职业技术学院学报》
2024年第1期8-13,共6页
Journal of Guangdong Communication Polytechnic
基金
广东省科技厅科技项目(编号:2021B1111610002)
广东省交通集团科技项目(编号:JT2023YB11)。
关键词
老化沥青
废机油
流变特性
分子量
再生
aged asphalt
waste oil
rheological properties
molecular weight
regeneration
