文章摘要
Research on Low-Temperature Rubber Asphalt with Microwave Activated Rubber Powder and Its Properties
Received:June 25, 2025  Revised:June 25, 2025
DOI：10.12136/j.issn.1000-890X.2025.12.0928
Key Words: rubber asphalt ；rubber powder；microwave activation；rotational viscosity；storage stability
Author NameAffiliationE-mail
QI Zhi* Hebei Traffic Investment Green Building Materials Co.,Ltd.,Baoding 742772065@qq.com 
GUO Ying Hebei Traffic Investment Green Building Materials Co.，Ltd  
GUO Jiangtao Hebei Traffic Investment Green Building Materials Co.，Ltd  
LIU Yanlei Hebei Traffic Investment Green Building Materials Co.，Ltd  
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Abstract:
      Using a microwave activator，the rubber powder with different degrees of activation was prepared by adjusting the activation process parameters. It was then used to produce the low-temperature rubber asphalt at 165 ℃ ，and compared with the traditional rubber asphalt prepared at 185 ℃.The results showed that，microwave activation treatment of the rubber powder could effectively improve its microstructure，significantly enhance its activity，and reduce the process difficulty of the rubber powder modified asphalt.When the Mooney viscosity [ML（1＋4）100 ℃] of the activated rubber powder was 45～75 and the solubility was 20%～30%，the comprehensive performance of the low-temperature rubber asphalt prepared was the best.The rotational viscosity，penetration and ductility of the low-temperature rubber asphalt were basically the same as the traditional rubber asphalt，and the storage stability and film aging performance were comparable.The performance of the low-temperature rubber asphalt mixture was similar to that of the traditional rubber asphalt mixture，and the water resistance was better.
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