阻燃温拌SBS改性沥青技术性能分析

发布时间：2018-11-17 13:53

【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。
[Abstract]:The flame retardancy and high temperature stability of SBS modified asphalt were compared and analyzed by flash ignition point, limiting oxygen index, three indexes (penetration, softening point, ductility), Brinell rotation viscosity, PG grade and so on. In order to guide the design and construction of flame retardant and warm mix asphalt pavement, the effects of fatigue resistance, low temperature cracking resistance, construction performance and so on are evaluated. The flame retardant and warm mix agent are used in the SBS modified asphalt pavement of long tunnel to guide the design and construction of flame retardant and warm mix asphalt pavement material. The results show that flame retardant can improve the flame retardancy of SBS modified asphalt. Warm mix agent can improve the high temperature stability of SBS modified asphalt and flame retardant SBS modified asphalt. Both kinds of modifiers can weaken the low temperature performance of SBS modified asphalt to some extent. The warm mix agent can effectively reduce the construction temperature of SBS modified asphalt and flame-retardant SBS modified asphalt, and help to improve the fatigue resistance of SBS modified asphalt and flame-retardant SBS modified asphalt.
【作者单位】：长沙理工大学道路结构与材料交通行业重点实验室;广西交通投资集团有限公司;江西省高速公路投资集团有限责任公司;
【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)
【分类号】：U414

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