不同因素对SBS/橡胶粉复合改性沥青物理性能影响研究
Study on the Influence of Different Factors on Physical Properties of SBS/Rubber Powder Composite Modified Asphalt
吴秀芳1
作者信息
- 1. 甘肃省兰州公路事业发展中心试验检测室,甘肃 兰州 730000
- 折叠
摘要
文中分析了胶粉掺量、SBS改性剂掺量及加热次数对SBS/橡胶粉改性沥青物理性能的影响.研究结果表明,复合橡胶沥青的软化点与SBS改性剂掺量呈现正相关关系,黏度和针入度指数与SBS改性剂掺量呈现先正相关后负相关;复合橡胶改性沥青的软化点、黏度和针入度指数均与橡胶粉掺量呈现正相关关系;当SBS改性剂掺量为5%及橡胶粉改性剂掺量为18%时,其所有的性能达到最佳;随着加热次数的增加,橡胶复合改性沥青的高温性能有所降低.
Abstract
In this study,the effects of the content of rubber powder,SBS modifier and heating times on the physical properties of SBS/rubber powder modified asphalt were analyzed.The results showed that the softening point of the compound rubber asphalt was positively correlated with the content of SBS modifier,and the viscosity and penetration index were first positively correlated and then negatively correlated with the content of SBS modifier.The softening point,viscosity and penetration index of compound rubber modified asphalt are positively correlated with the content of rubber powder.When the content of SBS modifier is 5%and the content of rubber powder modifier is 18%,all the properties are the best.With the increase of heating times,the high temperature performance of rubber composite modified asphalt decreased.
关键词
道路工程/沥青/SBS改性剂/胶粉/物理性能Key words
Road engineering/Asphalt/SBS modifier/Rubber powder/Physical property引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据