Characteristics of rubber-sand particle mixtures according to size ratio

Changho Lee, Q. Hung Truong, Woojin Lee, Jong-Sub Lee

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

In this study, rubber-sand particle mixtures are investigated to understand their stress-deformation and elastic modulus characteristics. Specimens are prepared with various size ratios, sr (=Drubber/Dsand), between sand and rubber particles, and different volumetric sand fractions, sf (=Vsand/Vtotal). Small strain shear waves are measured under a Ko-loading condition incorporated with the stress-deformation test by using an oedometer cell with bender elements. The stress-deformation and small strain shear-wave characteristics of rigid-soft particle mixtures show the transition from a rigid particle behavior regime to a soft particle behavior regime under a fixed size ratio. A sudden rise of the Λ factor and the maximum value of the ζ exponent in Gmax(σo'/kPa)ζ is observed at sf≈0.4-0.6 regardless of the size ratio (sr). The transition mixture shows a high sensitivity to the confining stress. The volume fraction for the minimum porosity may depend on the applied stress level in the rigid-soft particle mixtures because the soft rubber particles easily distort under load. In this experimental study, the size ratio and volumetric sand fraction are the important factors which determine the behavior of rigid and soft particle mixtures.

Original languageEnglish
Article number014004QMT
Pages (from-to)323-331
Number of pages9
JournalJournal of Materials in Civil Engineering
Volume22
Issue number4
DOIs
Publication statusPublished - 2010 Apr 1

Fingerprint

Rubber
Sand
Shear waves
Volume fraction
Porosity
Elastic moduli

Keywords

  • Ko-loading
  • Mixtures
  • Shear-wave velocity
  • Size ratio
  • Stiffness
  • Volume fraction

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Characteristics of rubber-sand particle mixtures according to size ratio. / Lee, Changho; Truong, Q. Hung; Lee, Woojin; Lee, Jong-Sub.

In: Journal of Materials in Civil Engineering, Vol. 22, No. 4, 014004QMT, 01.04.2010, p. 323-331.

Research output: Contribution to journalArticle

@article{70dd6af07ec5433d8454f7094becb381,
title = "Characteristics of rubber-sand particle mixtures according to size ratio",
abstract = "In this study, rubber-sand particle mixtures are investigated to understand their stress-deformation and elastic modulus characteristics. Specimens are prepared with various size ratios, sr (=Drubber/Dsand), between sand and rubber particles, and different volumetric sand fractions, sf (=Vsand/Vtotal). Small strain shear waves are measured under a Ko-loading condition incorporated with the stress-deformation test by using an oedometer cell with bender elements. The stress-deformation and small strain shear-wave characteristics of rigid-soft particle mixtures show the transition from a rigid particle behavior regime to a soft particle behavior regime under a fixed size ratio. A sudden rise of the Λ factor and the maximum value of the ζ exponent in Gmax=Λ(σo'/kPa)ζ is observed at sf≈0.4-0.6 regardless of the size ratio (sr). The transition mixture shows a high sensitivity to the confining stress. The volume fraction for the minimum porosity may depend on the applied stress level in the rigid-soft particle mixtures because the soft rubber particles easily distort under load. In this experimental study, the size ratio and volumetric sand fraction are the important factors which determine the behavior of rigid and soft particle mixtures.",
keywords = "Ko-loading, Mixtures, Shear-wave velocity, Size ratio, Stiffness, Volume fraction",
author = "Changho Lee and Truong, {Q. Hung} and Woojin Lee and Jong-Sub Lee",
year = "2010",
month = "4",
day = "1",
doi = "10.1061/(ASCE)MT.1943-5533.0000027",
language = "English",
volume = "22",
pages = "323--331",
journal = "Journal of Materials in Civil Engineering",
issn = "0899-1561",
publisher = "American Society of Civil Engineers (ASCE)",
number = "4",

}

TY - JOUR

T1 - Characteristics of rubber-sand particle mixtures according to size ratio

AU - Lee, Changho

AU - Truong, Q. Hung

AU - Lee, Woojin

AU - Lee, Jong-Sub

PY - 2010/4/1

Y1 - 2010/4/1

N2 - In this study, rubber-sand particle mixtures are investigated to understand their stress-deformation and elastic modulus characteristics. Specimens are prepared with various size ratios, sr (=Drubber/Dsand), between sand and rubber particles, and different volumetric sand fractions, sf (=Vsand/Vtotal). Small strain shear waves are measured under a Ko-loading condition incorporated with the stress-deformation test by using an oedometer cell with bender elements. The stress-deformation and small strain shear-wave characteristics of rigid-soft particle mixtures show the transition from a rigid particle behavior regime to a soft particle behavior regime under a fixed size ratio. A sudden rise of the Λ factor and the maximum value of the ζ exponent in Gmax=Λ(σo'/kPa)ζ is observed at sf≈0.4-0.6 regardless of the size ratio (sr). The transition mixture shows a high sensitivity to the confining stress. The volume fraction for the minimum porosity may depend on the applied stress level in the rigid-soft particle mixtures because the soft rubber particles easily distort under load. In this experimental study, the size ratio and volumetric sand fraction are the important factors which determine the behavior of rigid and soft particle mixtures.

AB - In this study, rubber-sand particle mixtures are investigated to understand their stress-deformation and elastic modulus characteristics. Specimens are prepared with various size ratios, sr (=Drubber/Dsand), between sand and rubber particles, and different volumetric sand fractions, sf (=Vsand/Vtotal). Small strain shear waves are measured under a Ko-loading condition incorporated with the stress-deformation test by using an oedometer cell with bender elements. The stress-deformation and small strain shear-wave characteristics of rigid-soft particle mixtures show the transition from a rigid particle behavior regime to a soft particle behavior regime under a fixed size ratio. A sudden rise of the Λ factor and the maximum value of the ζ exponent in Gmax=Λ(σo'/kPa)ζ is observed at sf≈0.4-0.6 regardless of the size ratio (sr). The transition mixture shows a high sensitivity to the confining stress. The volume fraction for the minimum porosity may depend on the applied stress level in the rigid-soft particle mixtures because the soft rubber particles easily distort under load. In this experimental study, the size ratio and volumetric sand fraction are the important factors which determine the behavior of rigid and soft particle mixtures.

KW - Ko-loading

KW - Mixtures

KW - Shear-wave velocity

KW - Size ratio

KW - Stiffness

KW - Volume fraction

UR - http://www.scopus.com/inward/record.url?scp=77953352739&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953352739&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)MT.1943-5533.0000027

DO - 10.1061/(ASCE)MT.1943-5533.0000027

M3 - Article

AN - SCOPUS:77953352739

VL - 22

SP - 323

EP - 331

JO - Journal of Materials in Civil Engineering

JF - Journal of Materials in Civil Engineering

SN - 0899-1561

IS - 4

M1 - 014004QMT

ER -