市政技术2024，Vol.42Issue(4)：18-24,86,8.DOI:10.19922/j.1009-7767.2024.04.018
SBS/胶粉复合改性沥青共混改善及其性能提升技术
Blending Improvement and Performance Improvement Technology of SBS/Rubber Powder Composite Modified Asphalt
摘要
Abstract
In order to improve the storage stability of SBS/rubber powder composite modified asphalt,the blending process was improved in this study.The matrix asphalt was modified by the rubber powder and SBS with different dosages respectively to get rubber powder modified asphalt mother liquor and SBS modified asphalt mother liquor.Blended SBS/rubber powder composite modified asphalt was prepared by mixing the two mother liquors.By compar-ing with traditional SBS/rubber powder composite modified asphalt,the influence of blending improvement process on the physical,rheological and fatigue performances was studied.The results showed that the improved blending process significantly enhanced the performance of SBS/rubber powder composite modified asphalt.The improvement effect is the best when a blending time is 30 min;When the rubber powder content is 20％,the storage stability was improved by approximately 30％,low-temperature relaxation performance by 14.6％,fatigue life by 23.7％,and high-temperature rutting resistance remained nearly unchanged;Based on the change trend of softening point of blended SBS/rubber powder composite modified asphalt,the optimal dosage of rubber powder was 20％with 30 min blending time.关键词
SBS/胶粉/复合改性沥青/共混改善工艺/储存稳定性/物理-流变性能/疲劳性能Key words
SBS/rubber powder/composite modified asphalt/blending improvement process/storage stability/physic-rheological performance/fatigue performance分类
交通运输引用本文复制引用
万民晶,田乐鹏,张壮,牛玺荣..SBS/胶粉复合改性沥青共混改善及其性能提升技术[J].市政技术,2024,42(4):18-24,86,8.基金项目
国家级大学生创新创业训练项目(202210108021) （202210108021）
山西交控集团科技项目(2022-JKKJ-15) （2022-JKKJ-15）
