紫外吸收剂/环烷油对高寒区SBS沥青路面的性能影响  

Influence of UV absorber/naphthenic oil on the performance of SBS asphalt pavement in alpine regions

作　　者：马峰[1] 王正 傅珍[2] 唐钰杰 祝崇鑫 武孟 MA Feng;WANG Zheng;FU Zhen;TANG Yu-jie;ZHU Chong-xin;WU Meng(School of Highway,Chang’an University,Xi’an 710064,China;School of Materials Science and Engineering,Chang’an University,Xi’an 710064,China)

机构地区：[1]长安大学公路学院,陕西西安710064 [2]长安大学材料科学与工程学院,陕西西安710064

出　　处：《应用化工》2024年第1期58-62,共5页Applied Chemical Industry

基　　金：国家重点研发计划(2018YFB1600200);国家自然科学基金项目(52038001);中央高校基本科研业务费专项资金(300102211504)。

摘　　要：为提高沥青混合料在高寒高海拔地区路用性能,选择不同掺量的紫外吸收剂(UV-531)/环烷油(NPO)对SBS沥青进行复合改性,研究复合改性剂对SBS改性沥青及混合料路用性能的影响。结果表明,相比于原样SBS沥青,UV-531/NPO复合改性剂能显著提高SBS沥青的低温变形能力和感温性能,但会降低沥青的高温性能(延度增加117.6%,当量脆点和感温系数分别降低52.0%和11.9%,当量软化点降低2.3℃)。同时,复合改性剂能显著提高混合料的低温抗裂性能(弯曲劲度模量降低9.61%,最大弯拉应变提升11.20%),然而对其高温稳定性与水稳定性会产生一定程度消极影响。高寒高海拔地区主要考虑混合料的低温抗裂性,因此,UV-531/NPO复合改性沥青路面具有很大应用潜力。In order to improve the road performance of asphalt mixture in high altitude regions,different amounts of UV absorber(UV-531)/naphthenic oil(NPO)were selected for the composite modification of SBS asphalt.To investigate the effect of compound modifiers on the road performance of SBS modified asphalt and mixtures.The results showed that the UV-531/NPO compound modifier significantly improved the low-temperature deformability and temperature-sensitive properties of SBS asphalt of SBS asphalt compared to the original SBS asphalt,but reduced the high-temperature performance of the asphalt(ductility increased by 117.6%,equivalent brittle point and temperature sensing coefficient decreased by 52.0%and 11.9%,equivalent softening point reduced by 2.3℃).At the same time,the compound modifier can significantly improve the low-temperature crack resistance of the mixture(9.61%reduction in bending stiffness modulus and 11.20%increase in maximum bending and tensile strain).However,it will have a certain degree of negative impact on its high-temperature stability and water stability.High altitude regions mainly consider the low-temperature crack resistance of the mixture.Hence,UV-531/NPO Compound modified asphalt and its mixture have great potential for application.

关 键 词：高寒高海拔 UV-531/NPO 复合改性沥青 沥青混合料 路用性能 

分 类 号：TQ637[化学工程—精细化工] U414[交通运输工程—道路与铁道工程]