期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

2013年 第7卷 第2期

摘要

关键词

相关研究

回顶部

《结构与土木工程前沿（英文）》 >> 2013年 第7卷 第2期 doi: 10.1007/s11709-013-0204-z

Analysis of cement-treated clay behavior by micromechanical approach

1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 3. Research Institute in Civil and Mechanical Engineering, UMR CNRS 6183, Ecole Centrale de Nantes, BP 92101, Nantes 44321, France

发布日期： 2013-06-05
HTML23 PDF 2 收藏 0

下一篇 上一篇

摘要

Experimental results show the significant influence of cement content on the mechanical properties of cement-treated clays. Cementation is produced by mixing a certain amount of cement with the saturated clay. The purpose of this paper is to model the cementation effect on the mechanical behavior of cement-treated clay. A micromechanical stress-strain model is developed considering explicitly the cementation at inter-cluster contacts. The inter-cluster bonding and debonding during mechanical loading are introduced in two ways: an additional cohesion in the shear sliding and a higher yield stress in normal compression. The model is used to simulate isotropic compression and undrained triaxial tests under various confining stresses on cement-treated Ariake clay and Singapore clay with various cement contents. The applicability of the present model is evaluated through comparisons between numerical and experimental results. The evolution of local stresses and local strains in inter-cluster planes are discussed in order to explain the induced anisotropy due to debonding at contact level under the applied loads. The numerical simulations demonstrate that the proposed micromechanical approach is well adapted for taking into account the main physical properties of cement-treated clay, including damage and induced anisotropy under mechanical loading.

相关研究