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- Triaxial_shear_test abstract "A triaxial shear test is a common method to measure the mechanical properties of many deformable solids, especially soil (e.g., sand, clay) and rock, and other granular materials or powders. There are several variations on the test.In a triaxial shear test, stress is applied to a sample of the material being tested in a way which results in stresses along one axis being different from the stresses in perpendicular directions. This is typically achieved by placing the sample between two parallel platens which apply stress in one (usually vertical) direction, and applying fluid pressure to the specimen to apply stress in the perpendicular directions. (Testing apparatus which allows application of different levels of stress in each of three orthogonal directions are discussed below, under "True Triaxial test".)The application of different compressive stresses in the test apparatus causes shear stress to develop in the sample; the loads can be increased and deflections monitored until failure of the sample. During the test, the surrounding fluid is pressurized, and the stress on the platens is increased until the material in the cylinder fails and forms sliding regions within itself, known as shear bands. The geometry of the shearing in a triaxial test typically causes the sample to become shorter while bulging out along the sides. The stress on the platen is then reduced and the water pressure pushes the sides back in, causing the sample to grow taller again. This cycle is usually repeated several times while collecting stress and strain data about the sample. During the test the pore pressures of fluids (e.g., water, oil) or gasses in the sample may be measured using Bishop's pore pressure apparatus.From the triaxial test data, it is possible to extract fundamental material parameters about the sample, including its angle of shearing resistance, apparent cohesion, and dilatancy angle. These parameters are then used in computer models to predict how the material will behave in a larger-scale engineering application. An example would be to predict the stability of the soil on a slope, whether the slope will collapse or whether the soil will support the shear stresses of the slope and remain in place. Triaxial tests are used along with other tests to make such engineering predictions.During the shearing, a granular material will typically have a net gain or loss of volume. If it had originally been in a dense state, then it typically gains volume, a characteristic known as Reynolds' dilatancy. If it had originally been in a very loose state, then contraction may occur before the shearing begins or in conjunction with the shearing.Sometimes, testing of cohesive samples is done with no confining pressure, in an unconfined compression test. This requires much simpler and less expensive apparatus and sample preparation, though the applicability is limited to samples that the sides won't crumble when exposed, and the confining stress being lower than the in-situ stress gives results which may be overly conservative. The compression test performed for concrete strength testing is essentially the same test, on apparatus designed for the larger samples and higher loads typical of concrete testing.".
- Triaxial_shear_test wikiPageID "7087318".
- Triaxial_shear_test wikiPageLength "12639".
- Triaxial_shear_test wikiPageOutDegree "29".
- Triaxial_shear_test wikiPageRevisionID "672176894".
- Triaxial_shear_test wikiPageWikiLink ASTM_International.
- Triaxial_shear_test wikiPageWikiLink British_Standards.
- Triaxial_shear_test wikiPageWikiLink Category:Mining_engineering.
- Triaxial_shear_test wikiPageWikiLink Category:Soil_tests.
- Triaxial_shear_test wikiPageWikiLink Civil_engineering.
- Triaxial_shear_test wikiPageWikiLink Clay.
- Triaxial_shear_test wikiPageWikiLink Consolidation_(soil).
- Triaxial_shear_test wikiPageWikiLink Direct_shear_test.
- Triaxial_shear_test wikiPageWikiLink Earthworks_(engineering).
- Triaxial_shear_test wikiPageWikiLink Effective_stress.
- Triaxial_shear_test wikiPageWikiLink Geotechnical_engineering.
- Triaxial_shear_test wikiPageWikiLink Granular_material.
- Triaxial_shear_test wikiPageWikiLink International_Organization_for_Standardization.
- Triaxial_shear_test wikiPageWikiLink List_of_important_publications_in_geology.
- Triaxial_shear_test wikiPageWikiLink List_of_publications_in_geology.
- Triaxial_shear_test wikiPageWikiLink Pore_water_pressure.
- Triaxial_shear_test wikiPageWikiLink Powder_(substance).
- Triaxial_shear_test wikiPageWikiLink Pressure.
- Triaxial_shear_test wikiPageWikiLink Reynolds_dilatancy.
- Triaxial_shear_test wikiPageWikiLink Rock_(geology).
- Triaxial_shear_test wikiPageWikiLink Sand.
- Triaxial_shear_test wikiPageWikiLink Shear_strength_(Discontinuity).
- Triaxial_shear_test wikiPageWikiLink Shear_strength_(discontinuity).
- Triaxial_shear_test wikiPageWikiLink Shear_strength_(soil).
- Triaxial_shear_test wikiPageWikiLink Shear_stress.
- Triaxial_shear_test wikiPageWikiLink Soil.
- Triaxial_shear_test wikiPageWikiLink Soil_mechanics.
- Triaxial_shear_test wikiPageWikiLink Stress_(mechanics).
- Triaxial_shear_test wikiPageWikiLink Stress_(physics).
- Triaxial_shear_test wikiPageWikiLink Unconsolidated.
- Triaxial_shear_test wikiPageWikiLinkText "Triaxial shear test".
- Triaxial_shear_test wikiPageWikiLinkText "Triaxial test".
- Triaxial_shear_test wikiPageWikiLinkText "triaxial compression tests".
- Triaxial_shear_test wikiPageWikiLinkText "triaxial shear test".
- Triaxial_shear_test hasPhotoCollection Triaxial_shear_test.
- Triaxial_shear_test wikiPageUsesTemplate Template:Geotechnical_engineering.
- Triaxial_shear_test subject Category:Mining_engineering.
- Triaxial_shear_test subject Category:Soil_tests.
- Triaxial_shear_test hypernym Method.
- Triaxial_shear_test type Article.
- Triaxial_shear_test type Software.
- Triaxial_shear_test type Article.
- Triaxial_shear_test type Discipline.
- Triaxial_shear_test type Mechanic.
- Triaxial_shear_test type Science.
- Triaxial_shear_test comment "A triaxial shear test is a common method to measure the mechanical properties of many deformable solids, especially soil (e.g., sand, clay) and rock, and other granular materials or powders. There are several variations on the test.In a triaxial shear test, stress is applied to a sample of the material being tested in a way which results in stresses along one axis being different from the stresses in perpendicular directions.".
- Triaxial_shear_test label "Triaxial shear test".
- Triaxial_shear_test sameAs Triaxiaalproef.
- Triaxial_shear_test sameAs Ensaio_triaxial.
- Triaxial_shear_test sameAs m.0h3k9_.
- Triaxial_shear_test sameAs Q2752723.
- Triaxial_shear_test sameAs Q2752723.
- Triaxial_shear_test wasDerivedFrom Triaxial_shear_test?oldid=672176894.
- Triaxial_shear_test isPrimaryTopicOf Triaxial_shear_test.