目录
化学建材
首页

TB复合高模量剂改性沥青的黏弹特性及混合料性能研究

作者：任非

关键字：复合,高模量,高,模量,剂,改性沥青,的,黏弹,

　
（河南科技大学 应用工程学院，河南 三门峡  472000）
    摘要：基于DSR、MSCR、BBR试验，研究TB（Terminal Blend）复合高模量剂改性沥青的的黏弹特性，并与20%TB（胶粉）沥青、5%SBS改性沥青进行了对比分析。通过车辙试验、低温弯曲试验与疲劳试验，对比分析了TB复合高模量剂改性沥青混合料的高低温性能和疲劳特性。结果表明，掺加高模量剂能显著改善TB（胶粉）沥青的中温和高温黏弹特性，提高抗车辙因子、增大弹性恢复率、降低不可恢复蠕变柔量；增加TB胶粉掺量能降低复合改性沥青的低温PG分级；（20%、25%）TB胶粉+（6%、8%）KT-1高模量剂复合改性沥青混合料的抗车辙性能、力学性能和抗疲劳耐久性能均优于5%SBS改性沥青混合料，TB复合高模量剂改性沥青混合料适用于高温重载地区沥青路面。
    关键词：TB（胶粉）沥青；高模量剂；复合改性沥青；高模量沥青混合料；性能
    中图分类号：TU535        文献标识码：A        文章编号：1001-702X（2021）01-0098-05
 
Research on viscoelastic properties and mixture performance of TB composite high modulus agent modified asphalt
REN Fei
（College of Applied Engineering，Henan University of Science and Technology，Sanmenxia 472000，China）
    Abstract：Based on DSR，MSCR，and BBR experiments， high-mode viscoelastic properties of the TB composite high modulus agent modified asphalt were compared with 20% TB asphalt and 5% SBS modified asphalt. Based on rutting test，low temperature bending test and fatigue test，the high and low temperature performance and fatigue characteristics of TB composite high modulus agent modified asphalt mixture were analyzed. The results show that the addition of high modulus agents can make up for the high temperature performance defects of TB asphalt. The high modulus agents significantly improve the medium and high temperature viscoelastic properties of TB asphalt，increase the rut resistance factor，increase the elastic recovery rate，and reduce irrecoverable creep changing the amount of flexibility and increasing the amount of TB rubber powder can reduce the low-temperature PG classification of composite modified asphalt. （20%，25%）TB rubber powder+（6%，8%）KT-1 high modulus additive compound modified asphalt mixture has rutting resistance，mechanical properties and fatigue durability greater than 5% SBS modified asphalt mixture. TB composite high modulus agent modified asphalt mixture has better advantages in asphalt pavement in high temperature and heavy load area.
    Key words：TB rubber powder asphalt，high modulus agent，composite modified asphalt，high modulus asphalt mixture，performance