加工工艺对改性沥青的性能影响  

Studies of Properties of Modified Asphalt by Different Mixture Technologies

作　　者：付海英[1] 谢雷东[1] 窦大营[1] 虞鸣[1] 李林繁[1] 姚思德[1] 

机构地区：[1]中科院上海应用物理研究所辐射应用研究中心,上海201800

出　　处：《交通科技》2005年第2期97-100,共4页Transportation Science & Technology

摘　　要：对电热环加热剪切搅拌、导热油加热剪切搅拌、胶体磨3种方式制备改性沥青的流变等基本性能技术指标进行比较,并利用旋转流变仪比较4种基质沥青制备改性沥青的流变性能及改性前后粘流活化能(ΔE)的变化。The asphalt constitution, physical characteristics and the factors inf luencing its utilization were introduced in this article. Some common asphalt he ating principle such as conductive heat oil, colloid-grinder and elective-heat r ing were used to produce modified bitumen in laboratory. The first mode caused a sphalt aging evidently during the period of shear and stirring.The two latter m odes were recommended to adopt in the construction. The constitution of four or iginal asphalts was analyzed and the properties of different modified asphalt mi xed by grafted SBS were compared. The softening point, ΔE and high temperat ure p roperties all improve to a great degree. Grafted-SBS was identified as an excel lent modification.

关 键 词：加工工艺 改性沥青 技术性能 电热环 改性剂 SBS接枝聚合物 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]