废轮胎热解炭黑(TPCB)改性沥青抗紫外老化性能试验研究  

Experimental Research on Anti-UV Aging Performance of Tire Pyrolysis Carbon Black(TPCB)Modified Asphalt

作　　者：杨晚生 易帅兵 戴天乐 李甜甜 甘有为 YANG Wansheng;YI Shuaibing;DAI Tianle;LI Tiantian;GAN Youwei(Jiangxi Yichun Municipal Traffic Construction Co.,Ltd.,Yichun,Jiangxi 337000,China;School of Traffic&Transportation Engineering,Changsha University of Science&Technology,Changsha,Hunan 410114,China)

机构地区：[1]江西宜春市政交通建设有限公司,江西宜春337000 [2]长沙理工大学交通运输工程学院,湖南长沙410114

出　　处：《中外公路》2024年第2期103-109,共7页Journal of China & Foreign Highway

基　　金：江西省交通运输厅科技项目(编号:2020H0023,2021H0019);湖南省研究生科研创新项目(编号:SJCX202106)。

摘　　要：为探讨废轮胎热解炭黑(TPCB)改性沥青抗紫外老化性能,制备TPCB改性沥青,对基质沥青和TPCB改性沥青进行不同时段的紫外老化试验。通过原子力显微镜(AFM)试验对比研究两种沥青表面的微观变化和表面粗糙度。通过沥青性能试验检验了两种沥青紫外老化前后延度、软化点、针入度变化行为。研究结果表明:TPCB改性沥青三维表观形貌图降低高度比基质沥青小,在各时间段的表面粗糙度比基质沥青大;紫外老化前后TPCB改性沥青性能变化值比基质沥青小。与基质沥青相比,TPCB改性沥青具有更好的抗紫外老化性能。To investigate the anti-ultraviolet(UV)aging performance of waste tire pyrolysis carbon black(TPCB)-modified asphalt,TPCB-modified asphalt was prepared and subjected to UV aging tests alongside the base asphalt at various intervals.The micro changes and surface roughness of two kinds of asphalt surfaces were studied by atomic force microscopy(AFM).The behavior changes in ductility,softening point,and penetration of two asphalts before and after UV aging were tested by asphalt performance tests.The results show that the reduction height of TPCB-modified asphalt is smaller than that of base asphalt,and the surface roughness is larger than that of base asphalt at each time.The performance change value of TPCB-modified asphalt before and after UV aging is smaller than that of base asphalt.Compared with the base asphalt,the asphalt modified with pyrolytic carbon black from waste tires has better UV aging resistance.

关 键 词：废轮胎热解炭黑(TPCB)改性沥青 紫外老化试验 微观形貌 沥青表面粗糙度 沥青性能 

分 类 号：U416[交通运输工程—道路与铁道工程]