Experimental Study on K0 Consolidation Behavior of Recompacted Unsaturated Expansive Soil

To investigate the variation of K(subzero), the coefficient of lateral earth pressure at rest, with initial saturation degree and constant radial stress, a series of K(subzero) consolidation tests were conducted on expansive soil samples under different saturation and stress conditions using a stress-path triaxial system equipped with Hall-effect transducer. The coefficient K(subzero) of every sample were obtained by strictly confining radial strain and evenly increasing radial stress to a given value with a slow and steady speed. The test results showed that the curve axial stress-radial stress exhibits nonlinear under small saturation degree; K(subzero) of samples in different saturation and stress state ranged from 0.22 to 0.72 and increased with increase of initial saturation degree and radial stress.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 27-32
  • Monograph Title: Recent Advancement in Soil Behavior, In Situ Test Methods, Pile Foundations and Tunneling: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01140985
  • Record Type: Publication
  • ISBN: 9780784410448
  • Files: TRIS
  • Created Date: Sep 15 2009 4:21PM