摘要
针对国内现有高黏沥青生产效率低,在生产制备过程中,需要循环过磨剪切数次(SBS改性沥青生产仅需一次过磨即可)等问题,自主研发一种新型速溶高黏沥青,改性剂在180~185℃温度下,只需要搅拌就可以溶化。并对速溶高黏沥青的路用性能和流变性能展开试验研究,沥青性能试验表明,速溶高黏沥青具有较高的软化点和黏度并且不影响施工和易性,与SBS改性沥青相比,具有良好的高低温流变性能和抗疲劳性能。设计SMA-13沥青混合料并进行混合料试验研究,结果表明速溶高黏沥青混合料路用性能优异。
In view of the low production efficiency of existing high-viscosity asphalt in China,in the process of production and preparation,it is necessary to cycle over-grinding and shearing several times(SBS modified asphalt production only needs one over-grinding).A new type of instant high-viscosity asphalt was developed independently.The modifier can be dissolved only by stirring at 180 C~185 C.The road performance and rheological properties of instant high viscosity asphalt were studied.The asphalt performance test showed that instant high viscosity asphalt had higher softening point and viscosity and did not affect the construction workability.Compared with SBS modifed asphalt,it had good high and low temperature rheologi-cal properties and fatigue resistance.The SMA-13 asphalt mixture was designed and tested.The results show that the instant high viscosity asphalt mixture has excellent road performance.
作者
李龙
姜益顺
马世东
周万东
孙允桥
郭金霞
任瑞波
LI Long;JIANG Yishun;MA Shidong;ZHOU Wandong;SUN Yunqiao;GUO Jinxia;REN Ruibo(Shandong Roud and Bridge Group Co.,Ld.,Jinan 250021;School of Transportation Engineering,Shandong Jianzhu University,Jinan 250101;Qingdao Transportation Planning and Design Institute Co.,Ltd.,Qingdao 266102)
出处
《石油沥青》
2023年第5期1-7,30,共8页
Petroleum Asphalt
基金
交通运输行业重点科技计划项目(2021-MS1-016)。
关键词
速溶高黏沥青
流变性能
沥青混合料
路用性能
instant high viscosity asphalt
rheological properties
asphalt mixture
road performance