中国塑料2025，Vol.39Issue(5)：43-49,7.DOI:10.19491/j.issn.1001-9278.2025.05.007
胶粉/SBS复合改性沥青抗老化性能与机理研究
Anti-aging performance and mechanism of asphalts modified with rubber powder/SBS composites
摘要
Abstract
To explore the anti-aging performance and mechanism of asphalt modified with rubber powder/SBS composites,a se-ries of modified asphalts were prepared by incorporating 2 wt%SBS and 20,25,30,and 35 wt%rubber powders.The anti-ag-ing performance of the modified asphalts after short-term aging and pressure aged vessel aging at different degrees was evaluat-ed.The results indicated that the high-temperature rutting resistance of the modified asphalts was improved,and their penetra-tion,ductility,elastic recovery,fatigue performance,and low temperature deformation resistance were deteriorated after aging.The deterioration degree decreased as the rubber powder content increased.The enhancement mechanism of anti-aging perfor-mance was analyzed by infrared spectroscopy.The variation ranges of carbonyl index,sulfoxide index,and infrared aging index of the aged asphalts became smaller with an increase in content of rubber powders,and the slope of infrared aging index equation decreased from 0.010 39 to 0.005 19.Rubber powders enhanced the anti-aging performance of the modified asphalts.The influ-ence of the rubber powder content and aging time on the infrared aging index could be comprehensively evaluated by an infrared aging index prediction model.The k prediction model of low-temperature creep ratio(k)established by correlating the infrared aging index as a microscopic index with the k value as a macroscopic index was accurate and effective,and it could be used for rapid comparative analysis on the low-temperature anti-aging performance of the modified asphalts.关键词
胶粉/改性沥青/抗老化机理/红外老化指数/低温抗老化性能/预测模型Key words
rubber powder/modified asphalt/anti-aging mechanism/infrared aging index/low temperature anti-aging performance/prediction model分类
化学化工引用本文复制引用
陈梦,李文良,张涛,张文才,杨喜英..胶粉/SBS复合改性沥青抗老化性能与机理研究[J].中国塑料,2025,39(5):43-49,7.基金项目
山西交通控股集团有限公司科技项目(2021-JKKJ-03) （2021-JKKJ-03）
山西省应用基础研究计划(201901D211552) （201901D211552）
