A Framework for Analysis of Diffuse Instability in Partially Saturated Granular Soils

2007 ◽  
pp. 19-28 ◽  
Author(s):  
Ronaldo I. Borja
Keyword(s):  
Granular Soils ◽  
Partially Saturated ◽  
Diffuse Instability

Numerical simulation of wetting-induced collapse in partially saturated granular soils

2019 ◽  
Vol 21 (3) ◽  
Author(s):  
Chao Yuan ◽  
Mariagiovanna Moscariello ◽  
Sabatino Cuomo ◽  
Bruno Chareyre
Keyword(s):  
Numerical Simulation ◽  
Granular Soils ◽  
Partially Saturated

Experimental investigation of the influence of relative effective diameter on the ultimate shear strength of partially saturated granular soils

2020 ◽  
Vol 17 (1) ◽  
pp. 56-70
Author(s):  
Khayreddine Doumi ◽  
◽  
Mostefa Belkhatir ◽  
Abdellah Cherif Taiba ◽  
Youcef Mahmoudi ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Shear Strength ◽  
Granular Soils ◽  
Effective Diameter ◽  
Ultimate Shear Strength ◽  
Partially Saturated

Movement of liquid contaminants in partially saturated frozen granular soils

1997 ◽  
Vol 25 (2) ◽  
pp. 111-117 ◽  
Author(s):  
David C. Wiggert ◽  
Orlando B. Andersland ◽  
Simon H. Davies
Keyword(s):  
Granular Soils ◽  
Partially Saturated

Environmental microscopy of capillary stress-induced strain behavior in ambient-pressure aerogels

1996 ◽  
Vol 54 ◽  
pp. 850-851
Author(s):  
Sudeep M. Rao ◽  
Joshua Samuel ◽  
Sai S. Prakash ◽  
C. Jeffrey Brinker
Keyword(s):  
Silica Aerogel ◽  
Ambient Pressure ◽  
Drying Shrinkage ◽  
Pore Filling ◽  
Silica Network ◽  
Strain Behavior ◽  
Partially Saturated ◽  
Capillary Stress ◽  
Wetting Liquid ◽  
Aerogel Films

Ambient pressure silica aerogel thin films have recently been prepared by exploiting reversible drying shrinkage caused by derivatization of the internal gel surface. Aerogels have porosities of upto 99.9% and due to the small size of the pores (few nanometers), large capillary stresses are produced in gels that are partially saturated with a wetting liquid. As a result of these capillary stresses, the flexible silica network undergoes strain which has been observed using environmental microscopy. This technique allows variation of the equilibrium vapor pressure and temperature, and a simultaneous monitoring of the deformation of the unconstrained film thickness. We have observed >600% deformation during the pore-filling and pore-emptying cycles. In this presentation, we discuss the unique stress-strain behavior of these films.Ref.: Sai S. Prakash, C. Jeffrey Brinker, Alan J. Hurd & Sudeep M. Rao, "Silica aerogel films prepared at ambient pressure by using surface derivatization to induce reversible drying shrinkage", Nature. Vol. 374, 30 March, 1995, 439-443.

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