The knowledge of unsaturated soil is indispensable for several hydrological and
geoenvironmental problems such as permeation of water through vadoze zone, ground …

Experimental studies on unsaturated soils are generally costly, time-consuming, and difficult
to conduct. Shear strength data from the research literature suggests that there is a …

The soil–water characteristic defines the relationship between the soil suction and
gravimetric water content, w, or the volumetric water content, θ, or the degree of saturation …

The measurement of soil parameters, such as the permeability and shear strength functions,
used to describe unsaturate soil behaviour can be expensive, difficult, and often impractical …

The constitutive relationship between water content or degree of saturation and suction is
called the soil-water characteristic curve. The soil-water characteristic curve provides a …

This paper is an overview of the mechanical and hydraulic behaviour and properties of
natural soils and soft rocks, from soft clays to chalk. It is based on Critical State Soil …

Soils compacted at various “initial” water contents and to various densities should be
considered as “different” soils from a soil mechanics behavioral standpoint even though their …

All soils irrespective of type, structure, or mineralogy are in a limiting saturated state
condition at zero suction and in a dry condition at a suction value of 1,000,000 kPa. As the …

This paper provides a summary of nineteen empirical procedures or techniques that are
available for predicting or estimating the shear strength of unsaturated soils. While six of …

A suction probe was developed to directly measure matric suction greater than 100 kPa. The
suction probe contains a small volume of water, a nonthreaded, high-range pressure …