Dynamic Elastic Modulus and Damping Ratio of Lignin-Modified Loess

作     者：Qian Wang Zhaozhao Liu Xiumei Zhong Zhongnan Gao Fuqiang Liu 

作者机构：Key Laboratory of Loess Earthquake EngineeringChina Earthquake Administration&Gansu ProvinceLanzhou730000China College of Civil Engineering and MechanicsLanzhou UniversityLanzhou730000China 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)

年 卷 期：2021年第9卷第3期

页      面：523-540页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：This study was supported in part by the Funding of Science for Earthquake Resilience(Grant Nos.XH20057,XH21034,XH21036Y) the National Natural Science Foundation of China(Nos.51778590,51408567) the grant of the Fundamental Research Funding for the Institute of Earthquake Forecasting,China Earthquake Administration(Grant Nos.2018IESLZ06,2016IESLZ01) the Science and Technology Projects Funding for Lanzhou City(Grant No.2018-1-123) 

主　　题：Lignin modified treatment dynamic triaxial test SEM XRD 

摘      要：To effectively improve the poor engineering properties of loess and enhance its seismic performance,the industrial by-product lignin is used as a modified *** on lots of dynamic triaxial tests,the dynamic elastic modulus and damping ratio of lignin-modified loess were *** effects of lignin content on the dynamic elastic modulus and damping ratio of lignin-modified loess were *** with scanning electron microscopy(SEM)and X-ray diffraction(XRD),the microscopic mechanism of lignin to improve the dynamic properties of loess was *** results show that lignin can effectively modify the dynamic deformation of loess under dynamic *** the same dynamic stress condition,the dynamic strain of lignin-modified loess is smaller than compacted *** dynamic elastic modulus of modified loess with different lignin content are quite different,but both decrease with the increase of dynamic *** the dynamic elastic modulus of modified loess is greater than compacted *** maximum dynamic elastic modulus of modified loess with a lignin content of 1%are significantly greater than *** the same dynamic strain condition,the damping ratio of lignin-modified loess is smaller than compacted *** can effectively fill loess pores and cement loess *** with compacted loess,no new mineral components are generated in the lignin-modified *** optimum lignin content of dynamics characteristic of modified loess is present,and the optimum lignin content is 1%.