Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/88934
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Measuring and modeling proportion-dependent stress-strain behavior of EPS-sand mixture |
Author: | Deng, A. Xiao, Y. |
Citation: | International Journal of Geomechanics, 2010; 10(6):214-222 |
Publisher: | American Society of Civil Engineers |
Issue Date: | 2010 |
ISSN: | 1532-3641 1943-5622 |
Statement of Responsibility: | An Deng and Yang Xiao |
Abstract: | A geofoam was produced by blending expanded polystyrene _EPS_ beads and sands in proportions. The formed mixtures, known as EPS-sands, were 26–63% lighter than general earth fills _e.g., sand_. Consolidated-drained _CD_ triaxial compression tests were conducted on EPS-sand mixture specimens to observe their stress-strain characteristics, specifically, the stress-strain responses in relation to the EPS contents _0.5, 1.5, and 2.5% by weight_ used in the mixtures and confining pressures _100, 200, 300 to 400 kPa_ loaded on the specimens. The EPS content and confining pressure were found to influence the stress-strain and volumetric strain behavior of the mixtures. Increasing EPS content led to decreased shear strength and increased volumetric strain. Increasing confining pressures enhanced the strength of the mixture. EPS-sand mixtures underwent a shear contraction throughout the CD tests. The optimum EPS bead content _i.e., the one reasonably balancing the unit weight, strength, and deformation_ was in the order of 0.5% by weight. EPS content dependent strain increment equations were derived by compromising Cam-clay and modified Cam-clay, and used to model the stress-strain characteristics of EPS-sand mixtures. The established equations were verified being able to depict the stress-strain observations of EPS-sand specimens, at least for the ranges of EPS contents and confinements considered in this study. |
Keywords: | EPS beads Sands Triaxial compression Shear strength Cam-clay Stress-strain behavior Lightweight fills |
Description: | Special Issue: Modeling in Geotechnical Engineering for Design and Materials |
Rights: | © 2010 ASCE |
DOI: | 10.1061/(ASCE)GM.1943-5622.0000062 |
Published version: | http://dx.doi.org/10.1061/(asce)gm.1943-5622.0000062 |
Appears in Collections: | Aurora harvest 2 Civil and Environmental Engineering publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_88934.pdf | Submitted version | 392.72 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.