Compressive and tensile strength enhancement of soft soils using nanocarbons

Mohd. Raihan Taha, Jamal M.A. Alsharef, Tanveer A. Khan, Mubashir Aziz, Maryam Gaber

Research output: Contribution to journalArticle

Abstract

Technological innovations in sustainable materials for soil improvement have attracted considerable interest due to energy crisis and environmental concerns in recent years. This study presents results of a comprehensive investigation on utilization of nanocarbons in reinforcement of a residual soil mixed with 0, 10 and 20% bentonite. Effects of adding proportionate quantities (0, 0.05, 0.075, 0.1 and 0.2%) of carbon nanotubes and carbon nanofibers to soil samples of different plasticities were evaluated. The investigation revealed that the inclusion of nanocarbons into the soil samples significantly improved unconfined compressive strength, Young’s modulus and indirect tensile strength. It was observed that carbon nanofibers showed better performance as compared to carbon nanotubes. The nanosized diameter and high aspect ratio of nanocarbons make it possible to distribute the reinforcing materials on a much smaller scale and bridge the inter-particles voids. As a result, a better ‘soil-reinforcing material’ interaction is achieved and desired properties of the soil are improved at nanolevel.

Original languageEnglish
Pages (from-to)559-567
Number of pages9
JournalGeomechanics and Engineering
Volume16
Issue number5
DOIs
Publication statusPublished - 10 Dec 2018

Fingerprint

soft soil
tensile strength
compressive strength
Compressive strength
Tensile strength
Soils
Carbon nanofibers
soil
soil improvement
residual soil
Young modulus
Carbon nanotubes
carbon
bentonite
void
reinforcement
plasticity
innovation
Bentonite
Plasticity

Keywords

  • Elastic modulus
  • Indirect tensile strength
  • Nanocarbons
  • Soft soils
  • Soil improvement
  • Unconfined compression

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

Cite this

Compressive and tensile strength enhancement of soft soils using nanocarbons. / Taha, Mohd. Raihan; Alsharef, Jamal M.A.; Khan, Tanveer A.; Aziz, Mubashir; Gaber, Maryam.

In: Geomechanics and Engineering, Vol. 16, No. 5, 10.12.2018, p. 559-567.

Research output: Contribution to journalArticle

Taha, Mohd. Raihan ; Alsharef, Jamal M.A. ; Khan, Tanveer A. ; Aziz, Mubashir ; Gaber, Maryam. / Compressive and tensile strength enhancement of soft soils using nanocarbons. In: Geomechanics and Engineering. 2018 ; Vol. 16, No. 5. pp. 559-567.
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