山东建筑大学学报2015，Vol.30Issue(5)：435-440,6.
天然岩沥青复合改性沥青性能评价与应用研究
Performance evaluation and application in highway maintenance project of Gilsonite-SBS compound modified asphalt
余四新 1韦金城 1蔡长松 2吴立强2
作者信息
- 1. 高速公路养护技术交通行业重点实验室(济南),山东 济南 250031
- 2. 滨州市公路管理局,山东 滨州256603
- 折叠
摘要
Abstract
It's an important method of improving rutting resistance performance of asphalt concrete to enhance viscosity of asphalt at high temperature. However,the performance of asphalt at both high and low temperature must be considered in the field. The performance of the compound modified asphalt is evaluated by laboratory testing based on PG method of SHRP. The result shows that the PG grade of the compound modified asphalt is PG82-22 . The production equipment used in the field is also developed,which applied Gilsonite-SBS asphalt in rutting maintenance project of G25 highway. The mixture gradation is specifically designed for the asphalt concrete of AC16 and SMA13 using Gilsonite-SBS asphalt. The hamburger wheel tracking test result of the cores cored form the field implies that the rutting depth is less than 6 mm after 20000 passes of wheel load at 50℃. All of the performance test results revealed that the rutting resistance is highly enhanced without reduction of performance at low temperature,which would be a reference in highway rutting maintenance project.关键词
道路工程/沥青路面/养护工程/天然岩沥青复合改性沥青/车辙Key words
road engineering/asphalt pavement/maintenance project/Gilsonite-SBS compound modified asphalt/rutting分类
交通工程引用本文复制引用
余四新,韦金城,蔡长松,吴立强..天然岩沥青复合改性沥青性能评价与应用研究[J].山东建筑大学学报,2015,30(5):435-440,6.
