A constitutive model for cemented granular materials capturing bond degradation

Luo，Zhibin1; Airey，David2; Fu，Yong1

2024-12-01

10.1016/j.compgeo.2024.106716

Computers and Geotechnics   影响因子和分区

0266-352X

1873-7633

A constitutive model for cemented granular materials based on modified Cam-clay model has been developed. The model is capable of predicting the stress–strain response of cemented granular materials subject to mechanical and chemical bond degradation. Two simple variables, the void ratio e and cement content C are used to evaluate the mechanical and chemical degradation ‘history’ of cemented granular materials. Simulation results show the effect of confining pressure, and the change from strain softening to hardening behaviour can be successfully reproduced. Moreover, the model also reproduces the changes of mechanical properties such as strength, bulk modulus and shear modulus due to the increase of void ratio and degradation of bond strength caused by chemical dissolution. Comparisons with experimental data show that the model can capture the stress–strain response of cemented geomaterials subjected to chemical degradation at different stress levels.

Bonds degradation Cemented granular materials Constitutive relations Hardening law

SCI ; EI

英语

第一 ; 通讯

COMPUTER SCIENCE

2-s2.0-85202934751

Scopus

1.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Civil Engineering,The University of Sydney,Sydney,2006,Australia

Luo，Zhibin,Airey，David,Fu，Yong. A constitutive model for cemented granular materials capturing bond degradation[J]. Computers and Geotechnics,2024,176.

Luo，Zhibin,Airey，David,&Fu，Yong.(2024).A constitutive model for cemented granular materials capturing bond degradation.Computers and Geotechnics,176.

Luo，Zhibin,et al."A constitutive model for cemented granular materials capturing bond degradation".Computers and Geotechnics 176(2024).