解交联橡胶粉改性沥青的制备工艺  

Preparation Technique of De-Crosslinking Rubber Modified Asphalt

作　　者：郑成强 张保民 李竞晨 朱宏喜 颜子骐 

机构地区：[1]山东高速工程咨询集团有限公司青岛分公司,山东 青岛 [2]山东大学齐鲁交通学院,山东 济南

出　　处：《土木工程》2024年第4期469-477,共9页Hans Journal of Civil Engineering

摘　　要：为确定解交联橡胶粉改性沥青的制备工艺,实验室通过调整改性沥青的制备温度和时间,采用针入度试验、软化点试验、延度试验研究了不同时–温反应进程的改性沥青性能演变规律。基于试验结果分析,硫化橡胶粉改性沥青的制备温度为200℃、剪切时间60 min;解交联橡胶粉改性沥青的制备温度为180℃、剪切时间60 min,与常规的硫化橡胶粉改性沥青相比,制备温度降低了约20℃,有利于节能减排。To determine the optimal preparation process for de-crosslinking rubber powder modified asphalt, the laboratory adjusted the preparation temperature and time of the modified asphalt and conducted the penetration test, the softening point test, and the ductility test to investigate the performance evolution of modified asphalt properties during different time-temperature reaction processes. Based on the analysis of experimental results, the preparation temperature for vulcanized rubber powder modified asphalt was established at 200˚C with a shearing time of 60 minutes. In contrast, the preparation temperature for de-crosslinking rubber powder modified asphalt was optimized at 180˚C with a shearing time of 60 minutes. Compared to conventional vulcanized rubber powder modified asphalt, the preparation temperature was reduced by about 20˚C, which favors energy conservation and emission reduction.

关 键 词：解交联胶粉 改性沥青 性能演变 制备温度 剪切时间 

分 类 号：U41[交通运输工程—道路与铁道工程]