Welcome to GeoTest of Geotechdata.info, a continuously growing open-access online platform of technical and theoretical information about geotechnical testing methods.
Concept The abrasivity of rock and soil is a factor of significant importance for excavation in tunnelling, underground construction, mining or quarrying. Abraison can be defined as wearing or tearing…
Concept The cone penetration test (CPT) is a common in situ testing method used to determine the geotechnical engineering properties of soils and assessing subsurface stratigraphy. The test is also…
Concept The cone-pressuremeter (Withers et al. 1986, Houlsby and Withers, 1988) test is an in-situ testing method used to measure both the soil strength and stiffness parameters. The cone-pressuremeter device is a displacement pressuremeter device…
Concept The constant head permeability test is a common laboratory testing method used to determine the permeability of granular soils like sands and gravels containing little or no silt. This testing method…
Concept Cyclic triaxial test is a laboratory testing method used to determine the cyclic strength (sometimes called the liquefaction potential) of saturated soils in either intact or reconstituted states by…
Concept The Direct Shear Test is used for determination of the consolidated drained (or undrained) shear strength of soils. The test is performed by deforming a specimen at a controlled…
Concept The falling head permeability test is a common laboratory testing method used to determine the permeability of fine grained soils with intermediate and low permeability such as silts and clays. This…
Concept The Flat dilatometer, or DMT, is an in-situ device used to determine the soil in-situ lateral stress and soil lateral stiffness and to estimate some other engineering properties of…
Concept The Huder-Amberg swelling test is a laboratoty testing method used to determine the swelling characteristics of geomaterials, specially of swelling rocks, in contcat with water. The test is carried…
Concept The Lugeon test, sometimes call also Packer test, is an in-situ testing method widely used to estimate the avarage hydraulic conductivity of rock mass. It is indeed In situ…
Concept The piezocone penetration test (CPTu) is a in situ testing method used to determine the geotechnical engineering properties of soils and assessing subsurface stratigraphy, relative density, strength and equilibrium…
Concept The pressuremeter test is an in-situ testing method which is commonly used to achieve a quick and easy measure of the in-situ stress-strain relationship of the soil which provides…
Concept The Proctor compaction test is a laboratory geotechnical testing method used to determine the soil compaction properties, specifically, to determine the optimal water content at which soil can reach…
Concept Resonant Column Test is a laboratory test used to determine the shear elastic modulus and damping properties of soils. The method is based on torsional or longitudinal vibration…
Concept The standard oedometer test, also referred to as consolidation test or one-dimensional compression test, is a classical laboratory test that allows characterizing the soil stress-strain behavior during one-dimensional compression…
Concept The Standard Penetration test (SPT) is a common in situ testing method used to determine the geotechnical engineering properties of subsurface soils. It is a simple and inexpensive test…
Concept The suction-controlled Direct Shear Test is an advanced laboratory teaing method to study the shear strength of unsaturated soils as affected by the soil suction. Although initially considered as a research…
Concept The suction-controlled triaxial test, or unsaturated triaxial test, is an advanced laboratory testing method used to study the triaxial behavior of unsaturated soils. It was originally developed and used…
Concept The thermo-hydro-mechanical oedometer (THM Oedometer) is an advanced laboratory test and refers to an oedometer test with temperature and suction control [1]. The THM oedometer allows characterizing the soil…
Concept Conventional triaxial test is a common laboratory testing method widely used for obtaining shear strength parameters for a variety of soil types under drained or undrained condition. …
Concept The true triaxial apparatus is a laboratory testing equipment to study the three dimensional stress-strain-strength behavior of soil, for instance in complex stress paths. It is mainly considered as…
Concept Unconfined Compression Test (UCT) is a simple laboratory testing method to assess the mechanical properties of rocks and fine-grained soils. It provides a measures of the undrained strength and…
Concept The vane shear test is an in-situ geotechnical testing methods used to estimate the undrained shear strength of fully saturated clays without disturbance. The test is relatively simple, quick, …