Comparative Analysis of Rheological Properties and Modification Mechanism of SBS-Graphene Composite Modified Binder

• 作者: Evgenii Korolev Huayang YU Jiangmiao YU Nikun YANG Svetlana Shekhovtsova
• 来源期刊: 材料科学与应用(英文)
• 学科: 工学
• 关键词: SBS-graphene modified asphalt chemical analysis rheological properties
• 年，卷（期）: 2020,（1）
• 页码范围: 48-58
• 页数: 11页
• 分类号: TQ3

摘要

SBS(styrene-butadiene-styrene block copolymer)has been widely used in pavement industry as an asphalt modifier.Nanomaterials can further enhance the performance of SBS modified asphalt.However,rare studies investigate the feasibility of using graphene as a performance enhancer of SBS modified asphalt.To fill this gap,comprehensive experimental tests including chemical and mechanical test were carried out on SBS-graphene modified asphalt and SEBS(styrene-ethylene-butylene-styrene block copolymer,which is a hydrogenated polymer of SBS)modified asphalt.Graphene with different dimensions and contents was taken into consideration in this study.Based on the experimental work,it can be concluded that graphene improves the mid-temperature performance of SBS modified asphalt.Compared with two-dimensional graphene,three-dimensional graphene has a greater advantage and the enhancement effect increases with the increase of its dosage.In addition,the cross-linked structure of SBS-graphene composite improves the distribution of SBS in asphalt,which improves the overall performance of SBS modified asphalt.