短切玄武岩纤维沥青路面使用性能后评估  

Post Evaluation of the Performance of Chopped Basalt Fiber in Asphalt Pavement

作　　者：何孝万 周宇 曹雪坤 童浩 林峰 郑炳锋 郭崇 HE Xiaowan;ZHOU Yu;CAO Xuekun;TONG Hao;LIN Feng;ZHENG Bingfeng;GUO Chong

机构地区：[1]江苏省高速公路经营管理中心,江苏南京210009 [2]苏交科集团股份有限公司,江苏南京211100 [3]新型道路材料国家工程研究中心,江苏南京211100 [4]东南大学,江苏南京211189

出　　处：《上海公路》2024年第3期15-21,M0003,M0004,共9页Shanghai Highways

基　　金：江苏省交通运输科技项目(2022Z02)。

摘　　要：短切玄武岩纤维是一种由可与沥青发生良好交互作用的矿物为主形成的纤维,具有优异的机械强度、热稳定性和耐化学性。短切玄武岩纤维因其优异的路用性能,越来越多地被应用于高速公路、国家和省级干线等工程。现依托江苏京沪高速在路面养护工程中应用短切玄武岩纤维的路段,基于路表性能、结构性能、材料性能评价方法,进行了路面性能后评估研究。结果表明,短切玄武岩纤维沥青混合料芯样表现出优异的高温性能、水稳定性能、抗裂性能和力学性能。其中,基于半圆弯曲试验的抗裂性能评价,玄武岩纤维上、中面层断裂能分别为910.0 J/m^(2)、1 168.9 J/m^(2),均属于“1”等级。总体来看,短切玄武岩纤维沥青路面具有良好的长期使用效果。Chopped basalt fiber is a mineral-based fiber that interacts well with asphalt,offering excellent mechanical strength,thermal stability,and chemical resistance.Due to its excellent road performance,Chopped basalt fiber was increasinglyused in highways,national and provincial trunk lines,and other engineering projects.This study evaluates the application of chopped basalt fiber in pavement maintenance projects on the Jiangsu Jinghu Expressway,using surface,structural,and material performance assessment methods.The results show that the core samples of the chopped basalt fiber asphalt mixture exhibit excellent high-temperature performance,water stability,crack resistance,and mechanical properties.In particular,the crack resistance performance evaluation based on the semi-circular bending test shows that the fracture energies of the upper and middle layers of basalt fibers are 910.0 J/m^(2) and 1168.9 J/m^(2),respectively,both of which belong to the“1”level.Overall,the chopped basalt fiber asphalt pavement has good long-term performance.

关 键 词：短切玄武岩纤维 沥青路面 路表性能 结构性能 材料性能 后评估 

分 类 号：U416.217[交通运输工程—道路与铁道工程]