文献类型：期刊文献

英文题名：Application of biochar from crop straw in asphalt modification

作者：Gan, Xinli Zhang, Wenli

第一作者：Gan, Xinli

通信作者：Gan, XL[1];Gan, XL[2]

机构：[1]Gansu Rd & Bridge Construct Grp, Res & Dev Ctr Transport Ind Technol Mat & Equipme, Lanzhou, Gansu, Peoples R China;[2]Guizhou Inst Technol, Sch Transportat Engn, Guiyang, Guizhou, Peoples R China

第一机构：Gansu Rd & Bridge Construct Grp, Res & Dev Ctr Transport Ind Technol Mat & Equipme, Lanzhou, Gansu, Peoples R China

通信机构：corresponding author), Gansu Rd & Bridge Construct Grp, Res & Dev Ctr Transport Ind Technol Mat & Equipme, Lanzhou, Gansu, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Transportat Engn, Guiyang, Guizhou, Peoples R China.|贵州理工学院;

年份：2021

卷号：16

期号：2

外文期刊名：PLOS ONE

收录：;Scopus(收录号：2-s2.0-85102117799);WOS:【SCI-EXPANDED(收录号:WOS:000624536800084)】；

基金：This work was financially supported by the open fund of the Research and Development Center of Transport Industry of Technologies,Materials and Equipments of Highway Construction and Maintenance (GLKF201816).

语种：英文

摘要：The objective of this study is to verify the feasibility of using biochar made from crop straw as a bitumen additive to improve some properties of bitumen. The differences between crop straw biochar prepared in a laboratory and commercial charcoal were investigated through scanning electron microscopy and laser particle size analyses. Furthermore, biochar-modified asphalt was prepared using the high-speed shear method, and the penetration, softening point, ductility at 15 degrees C, and apparent viscosity of the asphalt binder with 6% biochar were measured at 120, 135, 150, 160, and 175 degrees C. It was found that both the crop straw biochar and the commercial charcoal consist mainly of C, O, Si, and K, but the C content of crop straw biochar is slightly higher than that of commercial charcoal. The particle size of biochar is smaller than that of commercial charcoal, while the specific surface area is larger. It was determined that the addition of crop straw biochar significantly improved the high-temperature performance of asphalt, and that biochar and commercial charcoal have a similar influence on the high temperature performance of asphalt.