交通科技2024，Issue(6) ：13-16,22.DOI:10.3963/j.issn.1671-7570.2024.06.003

高原地区用高弹改性沥青碎石封层性能研究

Research on Performance of High-elasticity Modified Asphalt Chip Seal for Plateau Regions

钱航 任海生
交通科技2024，Issue(6) ：13-16,22.DOI:10.3963/j.issn.1671-7570.2024.06.003
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高原地区用高弹改性沥青碎石封层性能研究

Research on Performance of High-elasticity Modified Asphalt Chip Seal for Plateau Regions

钱航 1任海生2
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作者信息

  • 1. 东南大学建筑设计研究院有限公司 南京 210096
  • 2. 东南大学智能运输系统研究中心 南京 211189
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摘要

为解决高原地区沥青路表功能性快速衰退问题,以掺入纳米二氧化钛(TiO2)的高弹改性沥青为基础设计了一种碎石封层(MHEA碎石封层),并结合室内试验对MHEA碎石封层的路用性能进行评价.结果表明,纳米TiO2可有效减缓紫外线老化后高弹改性沥青针入度和拉升强度的衰减,进而提升沥青的抗紫外线老化性能.同时,MHEA碎石封层表现出优良的抗滑性能、密水性能、碎石-沥青间低温黏结性能和抗紫外线老化性能,在高原地区具有一定的应用和推广价值.

Abstract

In order to solve the rapid performance degradation of asphalt pavement in plateau regions,a chip seal was designed based on the modified high-elasticity asphalt mixed with nano-TiO2 powders(MHEA chip seal),and the pavement performances of MHEA chip seal were evaluated through labo-ratory experiments.The results show that the addition of nano-TiO2 can effectively delay the attenua-tion of penetration and tensile strength of modified high-elasticity asphalt after UV aging,thereby en-hancing the anti UV aging performance of asphalt.Meanwhile,MHEA chip seal exhibits excellent an-ti-slide performance,waterproofness,low-temperature bonding performance between crushed stone and asphalt and UV-aging resistance,which is potential for application in plateau regions.

关键词

高弹改性沥青/纳米二氧化钛/碎石封层/紫外线老化

Key words

modified asphalt with high-elasticity/nano-TiO2/chip seal/UV aging

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出版年

2024
交通科技
武汉理工大学

交通科技

影响因子：0.495
ISSN：1671-7570
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