间苯型不饱和聚酯树脂改性沥青桥面铺装研究
Study on the Preparation and Performance of M-phenylene Unsaturated Polyester Resin Modified Asphalt for Bridge Deck Pavement
陈建群 1吕建伟 1孙锦林 2韩飞飞2
作者信息
- 1. 杭州市公路与港航管理服务中心 杭州 310014
- 2. 长安大学教育部特殊地区公路工程重点实验室 西安 710064
- 折叠
摘要
为提高桥面铺装层的抗裂性,同时减少坑槽等水损害病害的发生,本文开发了一种不饱和聚酯树脂(以下英文简称UP)改性沥青桥面铺装材料,并对其配比和性能进行研究.通过粘度、动态剪切流变(DSR)和拉伸试验确定最佳UP改性沥青材料配比,对改性沥青流变性能和拉伸性能进行测试,并对UP改性沥青桥面铺装材料进行路用性能对比评估.研究结果表明,UP改性沥青具有良好的高温流变性,明显优于SBS改性沥青,且UP改性沥青与环氧改性沥青相比,具有更好的柔韧性,且价格便宜,其成本仅为环氧沥青的57%.此外,经测试,UP改性沥青桥面铺装材料的抗拉性能、高温稳定性也明显优于SBS改性沥青混合料,且与环氧沥青混合料相比,具有更好的低温抗裂性与水稳定性.
Abstract
In order to enhance the crack resistance of bridge deck pavement and simultaneously mitigate water-in-duced diseases such as potholes,this study developed a m-phenylene unsaturated polyester resin(UP)modified asphalt mixtures for bridge deck pavement and investigated the formulation and performance.The optimal formula-tion of UP modified asphalt was determined through viscosity,dynamic shear rheology(DSR),and tensile tests.Subsequently,the rheological and tensile properties of the modified asphalt were examined.Finally,comparative e-valuations were conducted on road performance of UP modified asphalt mixtures.The results show that UP modified asphalt exhibits excellent high-temperature rheological properties,and surpasses those of SBS-modified asphalt significantly.Moreover,UP modified asphalt demonstrates superior flexibility compared to epoxy modified asphalt and has a more cost-effectiveness with a price approximately 57%lower than that of epoxy asphalt.Additionally,the tensile properties and high temperature stability of UP modified asphalt mixtures are significantly better than those of SBS-modified asphalt mixtures.They have better resistance to cracking at low temperatures and water-induced damage,compared with epoxy asphalt mixtures.
关键词
桥面铺装/不饱和聚酯树脂/改性沥青/沥青混合料/路用性能Key words
bridge deck pavement/unsaturated polyester resin/modified asphalt/asphalt mixture/road perform-ance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据