北京建筑大学学报2026，Vol.42Issue(3)：116-124,9.DOI:10.19740/j.2096-9872.2026.03.12
植物油/湖沥青复合改性沥青的性能分析
Performance Analysis of Vegetable oil/TLA Composite Modified Asphalt
摘要
Abstract
To investigate the feasibility of composite modification using vegetable oil and Trinidad Lake asphalt,based on preliminary experiments and existing research findings,composite modified asphalt samples with VO content of 0%,5%,10%,and 15%were prepared by maintaining a fixed TLA dosage of 30%.The five asphalt samples were tested using penetration,softening point,ductility,viscosity,rotating thin film oven test(RTFOT),and thermogravimetric analysis(TGA).The experimental results indicate that the addition of vegetable oil significantly improves the low-temperature ductility and construction workability of TLA modified asphalt.Notably,at a VO content of 10%,the ductility reaches 26.5 cm,which is 40.2%higher than that of the control group without vegetable oil.However,as the VO content increases,the softening point and viscosity of the modified asphalt exhibit a significant decreasing trend.At a VO content of 15%,the softening point decreases by 52%,markedly impairing its high-temperature stability.Furthermore,the 10%VO/TLA composite modified asphalt shows the lowest mass loss rate during aging,whereas the 15%VO composite system exhibits higher sensitivity to thermo-oxidative aging.Thermogravimetric analysis reveals that the 10%VO/TLA composite modified asphalt demonstrates the optimal thermal stability in the temperature range of 200-500℃,with a total mass loss rate of 78.3%,achieving a relatively favorable balance between decomposition rate and mass loss.关键词
植物油/特立尼达湖沥青/复合改性/热氧老化/热重分析Key words
vegetable oil/TLA/composite modification/thermo-oxidative aging/thermogravimetric analysis分类
建筑与水利引用本文复制引用
索智,王欣欣,刘雪薇,赵子豪,野堯..植物油/湖沥青复合改性沥青的性能分析[J].北京建筑大学学报,2026,42(3):116-124,9.基金项目
国家重点研发计划项目(2022YFC3803405) （2022YFC3803405）
北京市属高等学校高水平科研创新团队建设支持计划项目(BPHR20220109). （BPHR20220109）
