改性生物沥青常规性能研究  

Study on Regular Performance of Modified Bio-asphalt

作　　者：何敏[1] 曹东伟[1] 张海燕[1] 吴小维[1] 李廷刚[1,2] 

机构地区：[1]交通运输部公路科学研究院,北京100088 [2]北京嘉格伟业筑路科技有限公司,北京100070

出　　处：《公路交通科技》2015年第2期8-12,共5页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(51478211);交通运输部应用基础研究项目(2014319223110);中国博士后科学基金一等资助项目(2014M550033)

摘　　要：为研究改性生物沥青的常规性能,对其进行针入度、软化点和延度试验,考察生物沥青与改性沥青按照不同比例混合后各性能的改善。试验结果表明:生物沥青与改性沥青混合后,其针入度值随着改性沥青比例的增大而减小;对改性生物沥青进行温度稳定性分析可知,两种生物沥青本身高温性能就好,当与改性沥青混合后,软化点降低,影响高温性能;生物沥青与改性沥青混合后,其延度都有很大程度的提高,改善了生物沥青低温下硬脆的缺点,特别是SBS改性沥青和SBR改性沥青作用最大。并且随着改性沥青所占比例的增大,效果越好。In order to research the conventional performance of modified bio-asphalt, the tests of penetration, softening point and ductility are carried out to investigate the performance improvement of mixed bio-asphah and modified asphalt with different mix proportions. The test result indicates that （ 1 ） after mixture of bioasphalt and modified asphalt, the penetration declines with the increasing of the proportion of modified asphalt; （2） the high temperature performance of two kinds of bio-asphalt is good according to the analysis of the temperature stability of modified bio-asphalt, when they are mixed with the modified asphalt, the softening points of modified bio-asphalts decline and this phenomenon affects the high temperature performance ; （ 3 ） after mixture of bio-asphalt and modified asphalt, the ductility have improved greatly, which corrected the disadvantages of hard and brittle bio-asphah at low temperature, especially the SBS modified asphalt and SBR modified asphalt, and the result is better with the increasing of the proportion of modified asphalt.

关 键 词：道路工程 改性生物沥青 试验生物沥青 稠度 温度稳定性 塑性 

分 类 号：U416.217.03[交通运输工程—道路与铁道工程]