路用生物沥青研究进展  

Advances in Bio-binder Application on Road Pavement

作　　者：汪海年[1] 高俊锋[1] 尤占平[1] 田原宇[2] 

机构地区：[1]长安大学道路结构与材料交通行业重点实验室,西安710064 [2]中国石油大学(华东)重质油国家重点实验室,青岛266580

出　　处：《武汉理工大学学报》2014年第7期55-60,共6页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51378074);交通运输部应用基础研究项目(2014319812180)

摘　　要：生物沥青是将由生物质快速热裂解制备提炼的生物质重油与石油沥青在一定条件下相溶合或者将生物质重油在一定条件下掺加其他外掺剂,制备而成的结合物。介绍比较了现有生物质重油炼制方法及生物沥青的制备工艺,对比分析了不同类型生物沥青结合料的性能表征及性状特点,指出了生物沥青化学改性机制的研究手段,阐述了生物沥青结合料与混合料研究过程中发现的问题及其成因,并对其下一步研究方向进行了展望。现有研究表明,生物沥青的高温性能较弱,其改性机制的定量评价仍不够全面系统。可以通过掺入聚合物、多聚磷酸、纳米粘土等外掺剂改善生物沥青的高温性能,基于数字图像方法的材料微观形态特征分析可为生物沥青化学改性机制的研究提供新的途径。Bio-binder is a binder which is made of bio-oil from fast pyrolysis of biomass and petroleum asphalt under certain conditions or bio-oil modified by some other additives under certain conditions.The bio-oil production procedure and the fabrication process of bio-asphalt were summarized and compared.The performance and characterization of different bio-binders were compared and analyzed.The chemical modification mechanism of bio-binder was then presented.Some problems and the developing trends in bio-binder and bio-binder mixtures were discussed.Current researches show that the high temperature of bio-binder is weak and the quantitative research on its modification mechanism is inadequate.The methods of adding additives such as polymers,polyphosphoric acid,nano-clay,etc.,can improve the high temperature performance,and micro-characteristics analysis based on professional image software can provide new methods for modification characterization.

关 键 词：道路工程 生物沥青 结合料 混合料 综述 

分 类 号：U414[交通运输工程—道路与铁道工程]