废机油再生沥青流变特性研究
Study on the Rheological Characteristics of Waste Oil Recycled Asphalt
黄传武 1王志祥 2陈富廉 2林国彬2
作者信息
- 1. 广东交科检测有限公司,广州 510420
- 2. 广东交科技术研发有限公司,广州 510420
- 折叠
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.
Abstract
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.
关键词
老化沥青/废机油/流变特性/分子量/再生Key words
aged asphalt/waste oil/rheological properties/molecular weight/regeneration引用本文复制引用
基金项目
广东省科技厅科技项目(2021B1111610002)
广东省交通集团科技项目(JT2023YB11)
出版年
2024
NETL
NSTL
万方数据