华中科技大学学报（自然科学版）2025，Vol.53Issue(2)：150-157,165,9.DOI:10.13245/j.hust.250538
青稞秸秆纤维增强沥青-集料界面黏附性评价
Evaluation of highland barley straw fiber rein-forced asphalt-aggregate interface adhesion
摘要
Abstract
The highland barley straw fiber was selected as the modifier,and an asphalt-aggregate interface model modified with highland barley straw fiber was established based on molecular dynamics theory.The interaction energy of the asphalt aggregate interface was calculated,and the adhesion of the asphalt aggregate interface and the water sensitivity of the asphalt water aggregate interface under different types of oxides and temperatures were explored.By comparing with the matrix asphalt,it is found that the adhesion between highland barley straw fiber modified asphalt and SiO2 increases by 1.17%at 323.15 K,while CaO,as an alkaline aggregate,exhibites the poorest adhesion and the strongest water sensitivity,which is least conducive to adhesion with highland barley straw fiber modified asphalt aggregate interface and accelerates the aging of asphalt pavement.At room temperature,the adhesion of Al₂O₃ can reach 218.7 mJ/m2,with the highland barley straw fiber modified asphalt exhibiting an increased adhesion of 10.94%compared to the matrix asphalt.Additionally,the energy ratio has increased by 10%.The addition of highland barley straw fiber has been demonstrated to enhance the water stability of matrix asphalt,rendering it more suitable for use in rainy areas.This improvement in stability can effectively prolong the lifespan of asphalt pavement.关键词
青稞秸秆纤维/集料/改性剂/黏附作用/分子动力学Key words
highland barley straw fiber/aggregate/modifier/adhesion/molecular dynamics分类
建筑与水利引用本文复制引用
念腾飞,李坯艺,黄晓明..青稞秸秆纤维增强沥青-集料界面黏附性评价[J].华中科技大学学报（自然科学版）,2025,53(2):150-157,165,9.基金项目
国家自然科学基金资助项目(52368066) （52368066）
甘肃省自然科学基金资助项目(23JRRA773) （23JRRA773）
兰州理工大学红柳优秀青年人才支持计划项目(04-062005). （04-062005）
