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Geotechnics
Geotechnics
Page last updated: 05/05/2009

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EXPERIMENTAL TECHNIQUES IN UNSATURATED SOIL MECHANICS
Direct measurement of soil suction in the laboratory and in the field (tensiometer)
Indirect measurement of soil suction (psychrometer and filter paper)
Water content measurement the laboratory and in the field
Osmotic control of soil suction
Microstructure investigation (mercury intrusion porosimetry and ESEM)

HYDRO-MECHANICAL BEHAVIOUR OF UNSATURATED SOILS
Stress variables for unsaturated soils
Shear strength of compacted and reconstituted clays and clayey silt
Hydro-mechanical coupling in unsaturated clays
Stress-strain behaviour of unsaturated silt
Interplay of pore size distribution and water retention characteristics

MECHANICAL BEHAVIOUR OF GRANULAR MATERIALS
Long term response of sand
Grain crushing of granular media and its effect on mechanical response
Wave propagation in granular materials

CHEMIO-MECHANICAL COUPLING IN SATURATED CLAYS
Effect of ion exchange on clay compressibility

SLOPE STABILITY ANALYSIS AND REMEDIAL MEASURES
Field monitoring of natural and artificial slopes:
Warning system for landslide movements;
Behaviour of the soil-geotextile interface.
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Responsible
L. Mongiový - Full Professor

A. Gajo - Associate Professor
G. Bosco - Assistant Professor
A. Tarantino - Assistant Professor
L. Simeoni - Research Fellow
A. Buscemi - PhD
A. Pozzato - PhD
S. Tombolato - PhD
M. Bragagna - Technical Assistant
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The Geotechnical Laboratory is equipped for mechanical testing and in-situ monitoring. It is also provided with software for geotechnical analyses. The Geotechnical Laboratory is one of the only two laboratories in the world that manufactures tensiometers for direct measurement of negative pore water pressure down to -2000 kPa.

The laboratory testing equipment includes:
(i) standard apparatuses (direct shear boxes, triaxial cells, oedometer apparatuses);
(ii) specially designed devices for soil suction measurement (filter paper boxes, tensiometers, psycrometers);
(iii) unique apparatuses for testing unsaturated soils under atmospheric conditions (osmotic oedometer; osmotic shear box, suction-monitored triaxial cell);
(iv) apparatus for measurement of shear and compression wave velocity in triaxial cell;
(v) specially designed apparatus for geotextiles testing.

The in situ monitoring equipment includes:
(i) inclinometer system,
(ii) spiralometer,
(iii) water level indicator,
(iv) rain gauge,
(v) GSM station for wireless data transmission,
(vi) PC Station for real-time monitoring.

The software includes:
(i) Finite Element code for stability analysis in unsaturated soils;
(ii) Finite Element code for hydro-thermo-mechanical problems in unsaturated porous media;
(iii) Distinct Element Method code for 2-D analysis of particulate media.