SDO/CR复合改性沥青微观形态与性能研究  

Research on Microscopic Morphology and Performance of SDO/CR Composite Modified Asphalt

作　　者：马春[1] 谢希望 王建文 张钊 牛冬瑜[2] 杨政险 MA Chun;XIE Xi-wang;WANG Jian-wen;ZHANG Zhao;NIU Dong-yu;YANG Zheng-xian(Fuzhou Branch of CCCC Second Harbour Engineering Company Ltd.,Fuzhou 350001,China;School of Materials Science and Engineering,Chang’an University,Xi’an 710061,China;CCCC Fourth Highway Engineering Co.Ltd.,Beijing 1000221 China;College of Civil Engineering,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]中交第二航务工程局有限公司福州分公司,福州市350001 [2]长安大学材料科学与工程学院,西安市710061 [3]中交第四公路工程局有限公司,北京市100022 [4]福州大学土木工程学院,福州市350108

出　　处：《公路》2021年第11期284-289,共6页Highway

基　　金：福州大学校企产学研合作项目,项目编号00501901。

摘　　要：为充分利用液体废弃资源,改善橡胶沥青性能缺陷,以泔水油(Swill-cooked Dirty Oil,SDO)、胶粉(Crumb Rubber,CR)复配制备改性沥青,通过荧光显微镜观察其微观形态,采用常规沥青试验、弯曲梁流变试验、离析管试验分析其路用性能与存储性能。结果表明:SDO能够促进CR颗粒的溶胀与降解,减小CR颗粒粒径,增大其在沥青中的分散度,并提高改性沥青的存储稳定性。物理性能和弯曲梁流变试验结果表明,SDO掺量的增加可提高沥青的低温性能和施工和易性,但对高温性能有一定程度上削弱。In order to make full use of liquid waste resources,improve the performance defects of rubber asphalt,the modified asphalt is prepared with Swill-cooked Dirty Oil(SDO)and Crumb Rubber(CR).The microscopic morphology of modified asphalt is observed by fluorescence microscope,and conventional physical property tests,bending beam rheometer test,and segregation tube test are carried out to analyze the road performance and storage performance of modified asphalt.The results show that SDO can promote the swelling and degradation of CR particles,reduce the size of CR particles,increase their dispersion in asphalt,and improve the storage stability of the modified asphalt.The physical properties and rheological test results of BBR show that the increase of SDO content can improve the low temperature performance and construction workability of asphalt,but it will weaken the high temperature performance to a certain extent.

关 键 词：改性沥青 泔水油 胶粉 微观结构 性能测试 

分 类 号：U414.7[交通运输工程—道路与铁道工程]