摘要
为降低沥青混合料施工过程中大量的能源消耗和废气排放,研发了新型温拌沥青改性剂,基于布洛克菲尔德旋转黏度试验,确定了温拌剂降黏特性。采用动态剪切流变试验（DSR）试验研究了温拌剂掺量、温度等因素对沥青流变性能的影响规律。结果表明：温拌剂掺量大于1%时,沥青黏度降低约80%,与SBS改性沥青相比,在64-70℃范围内时,温拌改性沥青抗车辙因子提高幅度为28.6%-71.4%,温拌剂的加入不仅降低了沥青黏度,而且改善了沥青高温性能。
New warm mixing modified asphalt was prepared to reduce energy consumption and greenhouse gas emissions in the construction process of asphalt mixture, the viscosity-reduction property of new warm mix agents were determined by Brookfield viscosity test, factors such as temperature mixing agent dosage, temperature on rheological properties of asphalt were analyzed comprehensively through dynamic shear rheological test. The results indicate that asphalt viscosity decreased about 80% when warm mixing additive quantity is more than 1%, compared with SBS modified asphalt, warm mix modified asphalt anti rut factor increased 28.6% - 71.4% in 64 - 70 Gy DEGC, warm mix additives not only reduced the viscosity of asphalt, and improve performance of asphalt in high temperature.
出处
《科学技术与工程》
北大核心
2015年第34期256-259,共4页
Science Technology and Engineering
基金
西藏自治区自然基金项目(12KJZRZMY01)
西藏民族学院青年学人培育计划资助项目(13myQP08)
长安大学中央高校基本科研业务费专项资金项目(2013G1321038)资助
关键词
道路工程
温拌沥青
降黏特性
流变性能
机理
road engineering warm mixing asphalt viscosity-reduction property rheological properties
mechanism
