-28-王丽丽,周建光,陈小兵,王俊天,文威,梁忠善,张梦茹,吴林:阻燃剂对SBS改性沥青流变性能的影响阻燃剂对SBS改性沥青流变性能的影响王丽丽1,周建光2,陈小兵3,王俊天4,文威3,梁忠善1,张梦茹2,吴林2(1.苏州三创路面工程有限公司,江苏苏州215124;2.苏州交投建设管理有限公司,江苏苏州215007;3.东南大学交通学院,江苏南京210096;4.杭州市交通运输发展保障中心,浙江杭州310030)摘要:为了研究阻燃剂对SBS改性沥青流变性能的影响,制备了不同阻燃剂用量(10%~50%)的阻燃改性沥青,通过动态剪切流变试验(DSR)和弯曲梁劲度试验(BBR)测试阻燃沥青的流变性能。结果表明:阻燃剂能够提高阻燃沥青的车辙因子,增强阻燃沥青的高温流变性能;随着阻燃剂用量的增加,阻燃沥青的疲劳因子不断增大,加入20%~30%阻燃剂能使阻燃沥青保持原样沥青的疲劳性能;阻燃剂能够增大阻燃沥青的蠕变劲度、减小松弛速率,从而提升阻燃沥青的低温流变性能。关键词:沥青;阻燃剂;流变性能;DSR;BBR中图分类号:U414文献标识码:AEffectofflameretardantonrheologicalpropertiesofSBSmodifiedasphaltWANGLilil,ZHOUJianguang2,CHENXiaobing3,WANGJuntian4,WENWei3,LIANGZhongshan1,ZHANGMengru2,WULin2(1.SuzhouSanchuangPavementEngineeringCo.,Ltd.,JiangsuSuzhou215124China;2.SuzhouTransportInvestmentConstructionandManagementCo.,Ltd.,JiangsuSuzhou215007China;3.SchoolofTransportation,SoutheastUniversity,JiangsuNanjing210096China;4.HangzhouTransportationDevelopmentSupportCenter,ZhejiangHangzhou310030China)Abstract:TostudytheeffectofflameretardantontherheologicalpropertiesofSBSmodifiedasphalt,flameretardantmodifiedasphaltwithdifferentflameretardantdosages(10%~50%)waspreparedtotesttherheologicalpropertiesofflameretardantasphaltbyDynamicShearRheologytest(DSR)andBendingBeamRheometertest(BBR).Theresultsshowthattheflameretardantcanimprovetheruttingfactorofflameretardantasphaltandenhancethehigh-temperaturerheologicalpropertiesofflameretardantasphalt.Withtheincreaseofflameretardantdosage,thefatiguefactorofflameretardantasphaltincreasescontinuously.Theadditionof20%~30%flameretardantcanmaintainthefatigueperformanceoftheoriginalasphalt.Flameretardantscanincrease...