高原地区沥青路面冷补料耐紫外老化性能研究  

Ultraviolet aging resistance of cold repair material for asphalt pavement in plateau area

作　　者：杨永强 张洪涛 李军 郭海东 马玉安 YANG Yong-qiang;ZHANG Hong-tao;LI Jun;GUO Hai-dong;MA Yu-an(General Section of Huangyuan Highway,Xining 812100,China;General Section of Guoluo Highway,Guoluo 814000,China)

机构地区：[1]青海省湟源公路总段,青海西宁812100 [2]青海省果洛公路总段,青海果洛洲814000

出　　处：《应用化工》2021年第S02期101-104,183,共5页Applied Chemical Industry

基　　金：青海省科技厅科技成果转化专项(2020-GX-115)。

摘　　要：以UVR-A和UVR-B作为紫外光稳定剂,并用于SBS改性乳化沥青冷补料。通过测试SBS改性乳化沥青蒸发残留物以及SBS改性乳化沥青冷补料紫外老化前后路用性能的变化,研究了UVR-A和UVR-B对SBS改性乳化沥青及其冷补料紫外老化性能的影响。结果表明,UVR-A可增强SBS改性乳化沥青及其冷补料的耐紫外老化性能,而UVR-B则降低了SBS改性乳化沥青及其冷补料的耐紫外老化性能,这主要是因为UVR-A可以捕获沥青材料紫外光辐射诱发的活性自由基,而UVR-B则产生可以促使沥青缩聚和SBS降解的自由基,从而加速SBS改性沥青的紫外老化进程。Using UVR-A and UVR-B as UV stabilizers,SBS modified emulsified asphalt cold patch was prepared.In order to study the effect of UVR-A and UVR-B on the UV aging performance of SBS modified emulsified asphalt and its cold patch,the evaporation residue of SBS modified emulsified asphalt and the road before and after UV aging of SBS modified emulsified asphalt were tested.Use the law of change in performance.The results show that UVR-A can enhance the UV aging resistance of SBS modified emulsified asphalt and its cold patch,while UVR-B can reduce the UV aging resistance of SBS modified emulsified asphalt and its cold patch.This can be attributed to the fact that UVR-A can capture active free radicals induced by ultraviolet radiation of asphalt materials,while UVR-B can generate free radicals that can promote asphalt condensation and SBS degradation,thus accelerating the UV aging process of SBS modified asphalt.

关 键 词：高原地区 SBS改性乳化沥青 冷补料 紫外老化 紫外光稳定剂 

分 类 号：TQ321[化学工程—合成树脂塑料工业] U416[交通运输工程—道路与铁道工程] U414