摘要
首先通过室内试验研究了不同粒径、不同掺量的废轮胎橡胶粉对基质沥青的改性效果,而后研究了橡胶沥青的性能随反应温度、时间的变化规律.结果表明:采用粒度为80目、掺量15%(质量分数)的橡胶粉制备橡胶沥青,其性能最优.橡胶沥青的性能与反应温度、时间之间具有很强的依赖性.当反应温度高于200℃,反应时间超过60 min的条件下,随着反应温度的升高和时间的延长,橡胶沥青的粘度显著下降.在高温条件下,当反应时间超过4h后,橡胶沥青的性能开始老化.基于试验研究结果,对橡胶沥青的生产及应用提出了几点建议.
The effect of crumb rubber with different particle sizes and contents on the properties of crumb rubber modified asphalt, and a change rule of performance of asphalt-rubber with reaction temperature and time were studied. The results indicate that asphalt-rubber has the best performance when 80 mesh and 15 % crumb rubber mass content were applied. The performance of asphah-n^ber strongly depends on the reaction temperature and time. When reaction temperature is higher than 200 ℃ and reaction more than 60 minutes, the viscosity of asphalt-rubber significantly declines with reaction temperature and time increasing. The asphalt-nrbber starts aging when reaction time is longer than 4 hours at high temperatures. Based on these results, some suggestions for production and application of asphalt-rubber were put forth.
出处
《山东大学学报（工学版）》
CAS
2008年第5期10-13,共4页
Journal of Shandong University（Engineering Science）
基金
山东省交通科技计划资助项目(2007Y09)
关键词
废旧轮胎橡胶粉
改性
橡胶沥青
工艺
性能
crumb rubber
modification
asphalt-rubber
process
performance
