中外公路2026，Vol.46Issue(1)：115-121,7.DOI:10.14048/j.issn.1671-2579.2026.01.012
再硫化胶粉-SBS复合改性沥青的高低温流变性能试验分析
Experimental Analysis of High-and Low-Temperature Rheological Properties of Revulcanized Rubber Powder-SBS Composite Modified Asphalt
摘要
Abstract
This paper aims to explore the performance recovery of desulfurized rubber powder in the desulfurized rubber powder-SBS composite modified asphalt after revulcanization treatment.By using 18%rubber powder-2%SBS composite modified asphalt,a desulfurized rubber powder-SBS composite modified asphalt was first prepared via a microwave pyrolysis desulfurization process.Subsequently,a vulcanizing agent was added to the system to prepare the revulcanized rubber powder-SBS composite modified asphalt.Experiments determined the optimal microwave pyrolysis desulfurization duration for rubber powder to be 5 min,and the optimal sulfur dosage was 6%by mass of the desulfurized rubber powder.A comparative analysis of the high-and low-temperature rheological properties of three composite modified asphalts(non-desulfurized,desulfurized,and revulcanized)shows that compared to the desulfurized rubber powder composite modified asphalt,the revulcanized rubber powder composite modified asphalt exhibits significantly improved viscoelasticity,deformation recovery rate,and deformation resistance under high-temperature conditions.Meanwhile,its deformation resistance and durability in low-temperature environments are also significantly improved,with all performance indicators restored to the levels of the non-desulfurized rubber powder-SBS composite modified asphalt.Infrared spectroscopy tests indicate that the addition of the vulcanizing agent restores C-S bonds and partially restores S-S bonds in the desulfurized rubber powder.These results confirm the effectiveness of revulcanization treatment in recovering the performance of desulfurized rubber powder-SBS composite modified asphalt,providing a theoretical basis and practical reference for related research and engineering applications.关键词
脱硫胶粉/微波裂解脱硫/胶粉-SBS复合改性沥青/再硫化处理/高低温流变性能Key words
desulfurized rubber powder/microwave pyrolysis desulfurization/rubber powder-SBS composite modified asphalt/revulcanization treatment/high-and low-temperature rheological property分类
交通工程引用本文复制引用
冯浩,杨照东,冯旭冉,蔺斌,姚爱玲,王康..再硫化胶粉-SBS复合改性沥青的高低温流变性能试验分析[J].中外公路,2026,46(1):115-121,7.基金项目
中交第一航务工程局有限公司重点研发项目(编号:062024181) （编号:062024181）
