摘要
排水性沥青混合料空隙率大,易于产生热老化和紫外线老化现象,为了提高排水性沥青混合料的耐久性,提出采用多聚磷酸与TPS复配方案,研究了TPS和PPA掺量对高粘改性沥青和排水性沥青混合料性能的影响,并与14%TPS改性沥青混合料进行了对比。试验结果表明,掺加PPA可显著改善TPS改性沥青混合料的高温稳定性和抗疲劳耐久性,采用PPA对TPS改性剂复配方案可显著改善排水性沥青混合料的抗热老化和紫外线老化性能,同时降低TPS掺量。采用TPS与PPA复配方案替代高剂量TPS改性沥青在技术上可行,推荐了最佳的TPS与PPA复配方案为12%TPS+1%PPA。
The drainage asphalt mixture porosity,prone to heat aging and ultraviolet aging,in order to improve durability of drainage asphalt mixture,poly-phosphate and TPS composite modified methods were proposed. The effects of TPS and PPA content on viscosity modified asphalt and road performance of porous asphalt mixture were studied,and with 14% TPS modified asphalt were compared. The results showed that,adding PPA can significantly improve the high temperature stability and fatigue durability of TPS modified asphalt mixture,the use of PPA and TPS composite modified can significantly improve the heat aging and ultraviolet aging properties of drainage asphalt mixture,while reducing the TPS content. TPS and PPA using complex high-dose regimen with TPS modified asphalt is technically feasible,and recommend the best TPS and PPA composite modified solutions is 12% TPS ＋ 1% PPA.
出处
《公路工程》
北大核心
2016年第3期165-171,共7页
Highway Engineering
关键词
道路工程
多聚磷酸改性沥青
排水性沥青混合料
抗老化性能
耐久性
road engineering
poly-phosphate-modified asphalt
drainage asphalt mixture
antiaging properties
durability
