摘要
采用闪燃点、极限氧指数、三大指标(针入度、软化点、延度)、布氏旋转粘度、PG分级等试验,对比分析阻燃剂、温拌剂对SBS改性沥青阻燃性能、高温稳定性能、抗疲劳性能、低温抗裂性能、施工性能等的影响,评价所选用阻燃剂、温拌剂用于长隧道SBS改性沥青路面的有效性,以指导阻燃温拌沥青路面材料设计和施工。试验结果表明,阻燃剂能显著提高SBS改性沥青的阻燃性能。温拌剂能改善SBS改性沥青和阻燃SBS改性沥青的高温稳定性能。两类改性剂均会在一定程度上削弱SBS改性沥青的低温性能。温拌剂能有效地降低SBS改性沥青、阻燃SBS改性沥青的施工温度,有助于改善SBS改性沥青和阻燃SBS改性沥青的抗疲劳性能。
By flashing point, tening point, ductility） , brookfield limiting oxygen index, the three viscosity and PG grading tests, major indexes （penetration, solit is analyzed the influences of flame retardant and warm agents on SBS modified asphalt properties of flame retardant, high-tempera- ture stability, fatigue resistance, low temperature crack resistance, workability and ere, and evaluated the effectiveness of flame retardant and warm agents on the SBS modified asphalt pavement in Long tun- nel in order to guide the warm mixed and flame retardant asphalt pavement material design and con- struction. The test results show that the flame retardant can significantly improve the flame retardant performance of SBS modified asphalt, and warm agents can also improve high temperature stability. In a certain extent, two kinds of modifier can reduced low temperature performance of SBS modified as- phah. Warm agents can effectively reduce construction temperature of SBS modified asphalt and flame- retarded SBS modified asphalt, can help to improve SBS modified asphalt and flame-retarded SBS modi- fied asphalt fatigue resistance performance.
出处
《公路工程》
北大核心
2017年第2期267-271,共5页
Highway Engineering
基金
广西交通科技计划项目(桂交科教发[2013]100号)
江西交通科技计划项目(2011C0063)
关键词
SBS改性沥青
阻燃剂
温拌剂
阻燃性能
常规性能指标
PG分级
SBS modified asphalt
flame retardant
warm agents
flame resistance
regularperformance indicators
PG grading
