华中科技大学学报（自然科学版）2025，Vol.53Issue(2)：127-135,9.DOI:10.13245/j.hust.250563
有机化无水硫酸钙晶须改性沥青机理研究
Study on mechanism of organic treated anhydrous calcium sulfate whisker modified asphalt
摘要
Abstract
A surface organic treated anhydrous calcium sulfate whiskers(ACSW)asphalt modification method was proposed,and the ACSW-organic active agent-asphalt interfacial system was established based on molecular dynamics.The surface organization process was simulated at the microscopic level to investigate the organization mechanism,and the modification effect on asphalt performance was verified by laboratory tests.The molecular dynamics simulation results indicate that ACSW link chemical bonds with organic active agents.The pro-organic end of the organic active agent physically adsorbs the asphalt molecules,thus forming a strong cross-linkage between ACSW and asphalt.In addition,the adhesion energy between ACSW and asphalt after surface organic treatment is significantly greater than that of the original ACSW.The laboratory test results demonstrate that the high-and low-temperature performance of ACSW modified asphalt is improved after the surface organic treatment.It verifies the effectiveness of the surface organic treatment ACSW for the asphalt modification method proposed in this paper.关键词
道路工程/表面有机化无水硫酸钙晶须/改性沥青/分子动力学模拟/沥青性能Key words
road engineering/surface organic treated anhydrous calcium sulfate whiskers/modified asphalt/molecular dynamics simulation/asphalt performance分类
交通工程引用本文复制引用
刘雨彤,罗辉..有机化无水硫酸钙晶须改性沥青机理研究[J].华中科技大学学报（自然科学版）,2025,53(2):127-135,9.基金项目
国家重点研发计划资助项目(2021YFF0501003) （2021YFF0501003）
国家自然科学基金资助项目(52078233) （52078233）
