市政技术2024，Vol.42Issue(10)：217-226,10.DOI:10.19922/j.1009-7767.2024.10.217
天然岩沥青四组分与微观特性研究进展
Research Progress on Four Components and Microscopic Properties of Natural Rock Asphalt
摘要
Abstract
With the gradual depletion of oil resources and the rise of the"dual carbon"trend,natural rock asphalt is favored by road engineering researchers because of both excellent road performance and low price.In order to fur-ther promote the development of research on the four components and microstructure of natural rock asphalt,the ap-plication and development history of natural rock asphalt was first reviewed at home and abroad;Subsequently,the four component content and related analysis were introduced;Finally,the functional group composition,surface microstructure and aggregation,and phase composition of natural rock asphalt were analyzed using three methods of Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM),and X-ray diffraction(XRD)from the microscopic perspective.The research results indicate that the application and research of natural rock as-phalt of foreign countries were earlier than China,but the microstructure study is more in-depth in China;The con-tent of the four components in natural rock asphalt varies significantly depending on the place of origin,but its as-phaltene content is much higher than that of matrix asphalt.The colloidal instability formula is not applicable for the calculation and quantitative evaluation of natural solid rock asphalt;By observing the changes in functional groups in FTIR,it was found that different types and contents of natural rock asphalt mainly modify the matrix asphalt in the physical property,without involving changes in functional groups;From a microscopic perspective,the surface morphology of natural rock asphalt is observed by SEM to be relatively rough and the aggregation degree is relatively tight,which can effectively enhance its resistance to water peeling;natural rock asphalt is found by XRD to contain more alkaline mineral elements,significantly improving the adhesion between binders and aggregates.关键词
道路工程/天然岩沥青/国内外应用发展历程/四组分分析/微观特性Key words
road engineering/natural rock asphalt/application development history home and abroad/four-com-ponent analysis/microscopic property分类
交通运输引用本文复制引用
赵奕安,呙润华,邱川,谢戎辰,陈刚,李建涛..天然岩沥青四组分与微观特性研究进展[J].市政技术,2024,42(10):217-226,10.基金项目
北京市首都公路发展集团有限公司重点科技项目(A2023-002) （A2023-002）
