摘要
以胶粉改性沥青为研究对象,掺入相同比例(20%)、不同细度的胶粉颗粒对基质沥青进行改性,得到4种胶粉改性沥青:20目改性、40目改性、60目改性和80目改性。试验结果显示:(1)胶粉改性沥青的高温性能、低温性能、抗剪切性能、自愈性能等普遍好于基质沥青;(2)胶粉改性沥青的贮存稳定性低于基质沥青;(3)胶粉数目对改性沥青60℃黏度、175℃黏度、黏韧性和韧性的影响欠规律,为胶粉改性沥青的应用和推广提供技术支持。
The research is using rubber power modified asphalt as subject with different sizing at same blending proportion(20 %)to study 4 kinds of rubber powder modified asphalt,20 mesh-numbers, 40 mesh-numbers, 60 mesh-numbers and 80 mesh-numbers. The test result has demonstrated,(1)The thermo performance at high and low temperature, shear-resistant performance and self-healing performance of rubber powder modified asphalt are generally better than matrix asphalt.(2)The storage stability of rubber powder modified asphalt is lower than matrix asphalt.(3)No significant rule can be concluded for rubber sizing impact on 60 ℃ viscosity/175 ℃ viscosity/toughness/tenacity performance of modified as-phalt. The application and promotion of rubber powder modified asphalt can be referred and supported.
引文
[1]马万,邓宝智.不同胶粉掺量的橡胶沥青黏弹性能评价[J].公路,2018,(10):109-113.
[2]费豪斌.胶粉与SBS复合改性沥青混合料的试验及应用研究[J].公路交通科技(应用技术版),2018,14(7):148-151.
[3]孙菲,周卫峰,张月,李翠红.胶粉改性沥青混合料温拌效果研究[J].中外公路,2018,38(3):315-320.
[4]魏颖.改性沥青及其流变学性能研究[J].福建交通科技,2018,(4):18-20+55.
[5]张建.离散级配沥青混合料的空隙率分析[J].福建建筑,2018,(5):78-82.
[6]戴进飞,戴仕远.建设工地沥青拌和站遭受雷击的影响因素分析[J].福建建筑,2017,(7):132-134.
[7]蔡叶澜,等.大修工程不同车道沥青路面结构搭接受力分析[J].福建建筑,2016,(10):78-81+91.
[8]朱健.浅析排水沥青路面混合料设计及施工要点[J].福建建筑,2016,(6):96-98.