废旧橡胶粉改性沥青感温性的评价  

Evaluation of Crumb Rubber Modified Asphalt Temperature Sensitivity

作　　者：石洪波[1] 王洪国[1] 廖克俭[1] 闫锋[1] 丛玉凤[1] 

机构地区：[1]辽宁石油化工大学石化学院,抚顺113001

出　　处：《科学技术与工程》2006年第4期439-442,共4页Science Technology and Engineering

基　　金：中国石油化工股份有限公司项目(X503006)资助

摘　　要：采用高剪切工艺,制备了三种废旧橡胶粉改性沥青;利用针入度指数法评价了改性沥青的感温性,采用当量软化点、当量脆点、4℃延度评价了改性沥青的高温稳定性和低温稳定性。结果表明,改性沥青的感温性得到很大程度的改善,当量软化点提高约7℃,当量脆点降低(8～10)℃,4℃延度提高20cm,说明废旧橡胶粉对沥青的感温性改性效果显著。Three kinds of crumb rubber modified asphalts were made of using high-rate cutting process in this experiment. Penetration Index （PI） was used to evaluate the temperature sensitivity of modified asphalts, equivalent softening point, equivalent fraass breaking point, ductility （4℃） were used to evaluate high temperature stability and low temperature stability of modified asphalts, respectively. The experimental results indicated that the temperature sensitivity of modified asphalts was improved in a great degree, equivalent softening point was heightened about 7℃, equivalent fraass breaking point was declined 10℃ and ductility （4℃） was heightened 20 cm. The temperature sensitivity of asphalt was improved significantly by crumb rubber.

关 键 词：废橡胶粉 改性沥青 感温性 针入度指数 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]