Environmental Earth Sciences

, Volume 61, Issue 7, pp 1449–1456

Evaluation of dynamic properties of geosynthetic reinforced clay samples for environmental impact practices

Original Article

DOI: 10.1007/s12665-010-0460-3

Cite this article as:
Akbulut, S. & Pamukcu, S. Environ Earth Sci (2010) 61: 1449. doi:10.1007/s12665-010-0460-3

Abstract

A series of tests were conducted to investigate the improvement of damping properties of clay samples with geosynthetic inclusions. Flexible thermoplastic polymer synthetics improve damping properties of clay samples. Resonant column tests were conducted to measure the low strain shear modulus and damping ratio of laboratory prepared synthetic inclusion clay specimens. The shear modulus and damping ratio of the reinforced clay samples were investigated considering geosynthetic type (geotextile and geomembrane), number of geosynthetic sheets, and confining pressure. The test results demonstrated that the geomembrane and the number of geosynthetic sheets significantly improved the shear modulus and damping ratio of reinforced clay samples compared with those of the unreinforced clay samples.

Keywords

Resonant columnShear modulusDamping ratioGeosyntheticClay

List of symbols

σ

Confining pressure

ξ

Damping ratio

γ

Shear strain

ΔH

Height of between two layers

ξmin

Minimum damping ratio of unreinforced sample

ωopt

Optimum moisture content

Li

Layering Index

com

Composite layer (2 geomembranes + 1 geotextile)

ρ

Mass density

A0,n

Amplitudes

D

Diameter of sample

G

Shear modulus

Gmax

Maximum shear modulus of unreinforced sample

Gs

Specific gravity

gtx

Geotextile

H, h

Total height of sample

mem

Geomembrane

Vs

Wave velocity

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of Civil EngineeringAtaturk UniversityErzurumTurkey
  2. 2.Department of Civil and Environmental EngineeringLehigh UniversityLehighUSA