Dynamic properties of polyurethane foam adhesive-reinforced gravels

作     者：LIU Ping MENG MinQiang XIAO Yang LIU HanLong YANG Gui LIU Ping;MENG MinQiang;XIAO Yang;LIU HanLong;YANG Gui

作者机构：School of Civil EngineeringLudong UniversityYantai 264025China School of Civil EngineeringChongqing UniversityChongqing 400045China Key Laboratory of New Technology for Construction of Cities in Mountain AreaChongqing UniversityChongqing 400045China College of Civil and Transportation EngineeringHohai UniversityNanjing 210098China Key Laboratory of Ministry of Education for Geomechanics and Embankment EngineeringHohai UniversityNanjing 210098China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2021年第64卷第3期

页      面：535-547页

核心收录：

学科分类：081702[工学-化学工艺] 081401[工学-岩土工程] 08[工学] 0817[工学-化学工程与技术] 0814[工学-土木工程] 

基　　金：the National Natural Science Foundation of China(Grant Nos.51709139 and 51678094) 

主　　题：polyurethane foam adhesive gravel shear modulus damping ratio cyclic triaxial test 

摘      要：Polyurethane foam adhesive(PFA)has been introduced as an alternative stabilizer in geotechnical applications because PFA can improve the engineering characteristics of soil by filling the pore space and generating adhesive bonding among the ***,the dynamic properties of PFA-reinforced soils are not well *** analyze the dynamic characteristics of PFA-reinforced gravels,a series of cyclic triaxial tests were carried out to investigate the shear modulus and damping ratio of PFA-reinforced gravels,and to determine the corresponding effects of the PFA content,confining pressure,consolidation stress ratio and loading *** results showed that the shear modulus increased,and the damping ratio decreased as the PFA content,confining pressure and consolidation stress ratio *** contrast,the effect of the loading frequency,which ranged from 0.05 to 1 Hz,was negligible.A modified hyperbolic empirical model can consider the effect of the PFA content on the maximum shear modulus and predict the relationship between the normalized shear modulus and the normalized shear strain was ***,the upper and lower bounds of the damping ratio were also proposed.