天然岩沥青在沥青混合料中的应用研究进展  

Application Research Progress of Natural Rock Asphalt in Asphalt Mixture

作　　者：李健 卢青兵 程志强 Li Jian;Lu Qingbing;Cheng Zhiqiang(Shanghai Road and BridgeGroupCo.,Ltd.,Shanghai200433,China;Shanghai Engineering Research Center of Green Pavement Materials,Shanghai 200433,China)

机构地区：[1]上海公路桥梁(集团)有限公司,上海200433 [2]上海绿色路面材料工程技术研究中心,上海200433

出　　处：《市政技术》2022年第10期33-39,75,共8页Journal of Municipal Technology

基　　金：上海市科委项目(20dz1202100);交通部重点科技项目(2020-ZD3-025)。

摘　　要：天然岩沥青是由石油在岩石夹缝中经过长达亿万年的沉积、变化形成的沥青类物质,其沥青组分与灰分相互包含,形成多孔隙结构,吸附沥青能力强,具有性质稳定、软化点高、耐老化能力强等优点。适量掺入岩沥青可显著提高沥青混合料的高温稳定性、抗老化性、水稳定性和抗疲劳破坏等路用性能,改善沥青结合料的温度敏感性及内部微裂缝自愈合能力,是性能优良、工艺简便可行的改性剂。笔者就天然岩沥青的种类和特点、岩沥青改性沥青混合料的生产工艺和路用性能、岩沥青的作用机理和质量控制指标等方面,归纳总结了既有的研究成果,以期为后续工程实践及研究工作的开展提供参考。Natural rock asphalt is a kind of asphalt material formed by the deposition and change of oil in the cracks of rocks for billions of years under complex natural conditions.The asphalt component and ash are mutually contained to form porous structure with strong adsorption capacity for asphalt.It has the advantages of stable properties,high softening point and strong aging resistance.Proper mixture of rock asphalt will significantly improve the high temperature stability,aging resistance,water stability and fatigue resistance of asphalt mixture,as well as the temperature sensitivity and internal micro crack self-healing ability.From the aspects of types and characteristics of natural rock asphalt,the production process and road performance of rock asphalt modified asphalt mixture,the function mechanism and quality control index of rock asphalt,the existing research resultsl are summarized to to provide reference for the follow-up engineering practice and research.

关 键 词：天然岩沥青 沥青混合料 路用性能 生产工艺 作用机理 

分 类 号：TU535[建筑科学—建筑技术科学]