改性沥青老化前后高温性能研究  

Study on High Temperature Performance of Modified Bitumen Before and After Aging

作　　者：崔祥密 李修春 蔡晓利 Cui Xiangmi;Li Xiuchun;Cai Xiaoli(East China Sales Branch of Petro China Fuel Oil Co.,Ltd.,Shanghai200122,China)

机构地区：[1]中石油燃料油有限责任公司华东销售分公司,上海200122

出　　处：《中国建筑防水》2022年第11期10-13,共4页China Building Waterproofing

摘　　要：改性沥青对于建筑防水材料和道路铺设工程具有重要价值,其老化性能对产品使用性能有重要影响。采用老化前后的软化点差评价改性沥青的高温性能和抗老化能力,分别研究了脱油沥青(DOA)改性沥青和SBS改性沥青老化前后软化点的变化,结果表明:DOA改性沥青老化后软化点升高,而SBS改性沥青老化后软化点降低且降低程度跟其相对分子质量和掺量相关。Modified bitumen is of great value for building waterproofing materials and road paving projects,and its aging performance has a significant impact on the product functional performance.The softening point difference before and after aging is used to evaluate the high-temperature performance and anti-aging capacity of modified bitumen.The softening point variation of deoiled asphalt(DOA)modified bitumen and SBS modified bitumen before and after aging are studied respectively,and results show:the softening point of DOA modified bitumen rises after aging;while that of SBS modified bitumen lowers,and the lowering extent is related to its relative molecular mass and dosage.

关 键 词：改性沥青 脱油沥青(DOA) SBS 老化 软化点 

分 类 号：TU502[建筑科学—建筑技术科学] TU535