市政技术2024，Vol.42Issue(4)：11-17,7.DOI:10.19922/j.1009-7767.2024.04.011
蓖麻油基生物沥青流变特性及水稳定性研究
Rheological and Moisture Stability Characteristics of Castor Oil-based Bio-asphalt
摘要
Abstract
In order to study the properties of castor oil-based bio-asphalt(COBA),three kinds of COBA with differ-ent dosages of 5％,10％,15％bio-oil and No.70 matrix asphalt were taken as research examples.Macroscopic tests such as softening point test,ductility test,bending beam rheology(BBR)test,dynamic shear rheology(DSR)test and contact angle moisture susceptibly test were applid to evaluate the high temperature performance,low tempera-ture performance and water stability of COBA.The results show that the anti-deformation and anti-rutting properties of COBA are reduced and the rheology is improved under high temperature conditions;While under low temperature conditions,the ductility and cracking resistance are enhanced.And the acidic compounds in bio-asphalt and silicon carboxylic acids,etc.generated by the action of mass aggregates accumulate and crystallize at the aggregate inter-face,which are hydrolyzed when exposed to water,the adhesion weakened.The larger the dosage of bio-oil,the more obvious the performance change of bio-asphalt.关键词
道路工程/蓖麻油基生物沥青/动态剪切流变试验/弯曲梁流变试验/接触角水分敏感性试验Key words
road engineering/castor oil-based bio-asphalt/dynamic shear rheology test/bending beam rheology test/contact angle moisture susceptibly test分类
交通运输引用本文复制引用
邱川,施青文,胡鹏坤,张然,季节..蓖麻油基生物沥青流变特性及水稳定性研究[J].市政技术,2024,42(4):11-17,7.基金项目
北京市教育委员会科研计划项目资助(KM202210016009) （KM202210016009）
北京市属高等学校高水平科研创新团队建设支持计划项目(BPHR20220109) （BPHR20220109）
长沙理工大学交通运输工程及测绘科学与技术领域研究基地2021年度开放基金资助项目(kfj210302) （kfj210302）
北京公联洁达公路养护工程有限公司课题(H23293) （H23293）
