International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2550

Review

Probable electrokinetic phenomena in tropical peat: A review

Afshin Asadi1*, Hossein Moayedi2, Bujang B. K. Huat2 and Alireza Parsaie3
1Department of Civil Engineering, Isfahan Science and Research Branch, Islamic Azad University, Isfahan, Iran. 2Department of Civil Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. 3Department of Civil Engineering, Khorasgan Branch, Islamic Azad University, Isfahan, Iran.  
Email: [email protected]

  •  Accepted: 28 March 2011
  •  Published: 04 May 2011

Abstract

Peat is unconsolidated superficial deposits with high non-crystalline colloid (humus) content, constituting the subsurface of wetland systems. Electrokinetic techniques are innovative ground improvement methods for soft soils. Peats have noticeable qualities to make a suitable environment for utilization of electrokinetic techniques, i.e. (i) the saturated mass is a good environment, (ii) the high charge and high specific surface area of the humus increases the presence of cations for a water momentum in an electro-osmotic phenomenon, (iii) the surface charge may cause electro-osmosis to occur, (iv) the decomposition processes affect the electro-osmotic behavior, (v) the resistivity may affect the electro-osmotic behavior. Introducing cations as a bridge between clay and humus surfaces may stabilize the peat from a geotechnical view point. The expectations of this review have to be proven by conducting some electro-osmotic experiments.

 

Key words: Electrokinetic phenomena, humus, peat.