面向寒冷地区的预溶胀SBS改性沥青的制备及其改性效果
Preparation and Modification Effect of Pre-Swelling SBS Modified Asphalt for Cold Regions
DOI: 10.12677/hjce.2026.157188, PDF,   
作者: 崔 林：长安大学理学院，陕西 西安；蔺 斌, 周张峰：中交一航局第五工程有限公司，河北 秦皇岛；陈琳涛：天津市政工程设计研究总院有限公司，天津；徐 娟：西安长大公路工程检测中心有限公司，陕西 西安；尚 义：长安大学公路学院，陕西 西安
关键词: 预溶胀SBS改性剂；预溶胀SBS改性沥青；改性沥青制备工艺；寒冷地区；沥青性能；Pre-Swelling SBS Modifier； Pre-Swelling SBS Modified Asphalt； Modified Asphalt Preparation Process； Cold Regions； Asphalt Performance
摘要: 为满足寒冷地区对沥青材料低温性能、老化性能与储存稳定性等的要求，提出一种预溶胀苯乙烯–丁二烯–苯乙烯(SBS)改性剂技术。本文通过芳烃油预溶胀SBS颗粒，形成均匀流动态的预溶胀SBS改性剂(PS-SBS)；采用简单机械搅拌工艺将其与基质沥青混合，制备出性能优异的改性沥青；研究了PS-SBS的制备方法、不同加工参数对改性沥青性能的影响；将PS-SBS与传统SBS改性沥青进行了对比研究，并系统分析了PS-SBS改性沥青的老化特性与低温流变性能。结果表明，以芳烃油:SBS质量比为0.8:1，80℃下溶胀60 h，PS-SBS达到最佳溶胀状态；PS-SBS改性沥青的最佳制备工艺是140℃，1000 r/min条件下搅拌1.0 h，再保持140℃发育1.0 h。PS-SBS改性沥青具有更低的粘度、更好的储存稳定性以及更优的低温性能与老化性能，但其高温性能受到一定影响。FM与FTIR分析表明，预溶胀工艺通过改善SBS的溶胀与分散状态提高了沥青相容性，其改性机理以物理共混为主。本研究为寒冷地区SBS改性沥青的制备与性能优化提供了理论依据和技术支撑。
Abstract: In order to meet the requirements of low-temperature performance, aging performance and storage stability of asphalt materials in cold regions, a pre-swelling styrene-butadiene-styrene (SBS) modifier technology was proposed. In this paper, the pre-swelling SBS particles of aromatic oil were used to form a pre-swelling SBS modifier (PS-SBS) with uniform flow dynamics. It is mixed with matrix asphalt by simple mechanical mixing process to prepare modified asphalt with excellent performance. The effects of PS-SBS preparation methods and different processing parameters on the properties of modified asphalt were studied. PS-SBS and traditional SBS modified asphalt were compared and studied, and the aging characteristics and low-temperature rheological properties of PS-SBS modified asphalt were systematically analyzed. The results showed that the mass ratio of aromatic oil:SBS was 0.8:1, and PS-SBS reached the best swelling state at 80˚C for 60 h. The optimal preparation process of PS-SBS modified asphalt was 140˚C, stirring for 1.0 h at 1000 r/min, and then maintaining 140˚C for 1.0 h. PS-SBS modified asphalt has lower viscosity, better storage stability, and better low-temperature performance and aging performance, but its high-temperature performance is affected to a certain extent. FM and FTIR analysis showed that the pre-swelling process improved the asphalt compatibility by improving the swelling and dispersion states of SBS, and the modification mechanism was mainly physical blending. This study provides a theoretical basis and technical support for the preparation and performance optimization of SBS modified asphalt in cold regions.
文章引用：崔林, 蔺斌, 周张峰, 陈琳涛, 徐娟, 尚义. 面向寒冷地区的预溶胀SBS改性沥青的制备及其改性效果[J]. 土木工程, 2026, 15(7): 159-172. https://doi.org/10.12677/hjce.2026.157188

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