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Showing 1 to 20 of 38 for “"triaxial test"”.

  1. Comparison and Correction of Multistage Triaxial Tests to Single Stage Triaxial Test for the Rock Mechanical Testing

    Al Salman, Malik Essam Hamzeh EssamUniversity of Houston2015

    … we investigate the relationship between two test protocols; the Single Stage Triaxial (SST) is where a constant confining stress is applied and the axial stress is raised until the sample fails. This is compared to the Multistage Triaxial (MST) test, where the sample is loaded to the point of …

    houston Repository record

  2. Effective and total stress strength interpretation for silts

    Pena, Bonifacio I. delaVirginia Tech1991

    … of this research study, series of UU and CU triaxial test results of different silt samples were gathered to investigate the factors that control the strength parameters of silts. Effective and total stress strength interpretation were done on the test results. The effective stress friction …

    vt Repository record

  3. Tunnels in swelling ground: simulation of 3D stress paths by triaxial laboratory testing

    BARLA, MARCOPolitecnico di Torino1999

    … study the swelling behaviour in tunnels. A new triaxial testing procedure is developed, which is able to quantify the swelling behaviour of soft rocks and stiff soils. The Caneva Clay is tested both by conventional oedometer swelling tests and by the new triaxial test. The swelling parameters of …

    poli-torino Repository record

  4. Adapting The Modified Cam Clay Constitutive Model To The Computational Analysis Of Dense Granular Soils

    Arvelo, Jose

    … behavior. This analysis is based on triaxial test data applied to remolded and compacted sand samples under drained conditions. The laboratory triaxial tests were performed by the Florida Department of Transportation to research the permeability effect in sandy soils compacted up to …

    ucf

  5. Determinação experimental, para solos residuais saturados, da variação dos parâmetros de resistência com a deformação axial

    Milititsky, JarbasUniversidade Federal do Rio de Janeiro1972

    … an experimental technique which makes use of the triaxial test apparatus known as the IDS test as developed by Schmertmann. This technique allows us to determine the components of shear strength of soils, according to new definitions. The shear strength at any deformation is divided into the D …

    brazil-uerj Repository record

  6. Comparison of direct shear and triaxial tests for measurement of shear strength of sand

    Rahman, Jamshed, author, Nelson, John D., advisor, Siller, Thomas J., committee member, Mielke, Paul W., committee memberColorado State University. Libraries1991

    … and earth-retaining structures. Direct shear and triaxial tests are the most popular laboratory methods to determine these parameters. The direct shear test is used widely because it is simple and quick. The test has several disadvantages, however. The non-uniform stress-strain behavior, the …

    colostate Repository record

  7. The significance of specimen end restraint in high pressure triaxial testing of cohesive soil

    Casey, Brendan (Brendan Anthony)Massachusetts Institute of Technology2011

    … specimen end restraint on the interpretation of triaxial test results. Undrained triaxial shear tests have been performed on specimens K0 consolidated to stresses ranging from 0.6 to 10 MPa. Behaviour is examined at three well-defined OCRs of 1, 2 and 4 in compression mode of shear. The tests …

    mit Repository record

  8. Contribuição ao estudo das argilas orgânicas de Pernambuco

    Amorim Júnior, Washington Moura deUniversidade Federal do Rio de Janeiro1975

    … unconfined compression, drained and undrained triaxial test were performed. The influence of sample disturbance and remolding on test results is discussed, as well as the effects of sample dimensions and velocity of shear on the strenght. Several suggestions are made with the purpose of …

    brazil-uerj Repository record

  9. Determinação dos parâmetros "elásticos" do solo residual compactado da barragem de Itauba

    Guimarães, Roberto BastosUniversidade Federal do Rio de Janeiro1977

    … path. In order to do the analysis three UU triaxial test series, with pore pressure measurement, were made, with 9 tests in each; of the nine, in 4 the relation K was mantained constant, varying, however from test to test. The first serie was carried out from specimens trimmed from block …

    brazil-uerj Repository record

  10. Ensaios triaxiais dinâmicos de um solo arenoso

    Preussler, Ernesto SimõesUniversidade Federal do Rio de Janeiro1978

    Dynamic triaxial (or repeated load) tests were performed with a fine sandy soil, residual material of sandstone, used in a sub-base layer of a flexible pavement in the State of Rio Grande do Sul, in order to determine its resilient modulus. The procedures for setting up the testing equipment, …

    brazil-uerj Repository record

  11. Modeling the relation between suction, effective stress and shear strength in partially saturated granular media

    Toker, Nabi Kartal, 1979-Massachusetts Institute of Technology2007

    … stress in an unsaturated soil from strength test results is also proposed. In order to examine the partially saturated mechanical behavior of granular materials, a triaxial test setup was modified to accommodate an MIT Tensiometer as its pedestal. Materials consisting of uniform spherical …

    mit Repository record

  12. The use of plasticity theory in predicting the deformational behavior of ice and sand-ice systems

    Smith, Leonard L.Rice University1974

    Results of triaxial and indentation tests on ice and sand-ice samples are reported. The main parameters studied in the triaxial tests were temperature (-12 to 35°F), confining pressure (atmospheric to 4, psi), and loading rate (2.5 - 25 psi/sec). All of the indentation tests were conducted at …

    rice Repository record

  13. Strength of transversely isotropic rocks

    Pei, Jianyong, 1975-Massachusetts Institute of Technology2008

    … of transversely isotropic rocks under true triaxial stress states. One major obstacle in formulating an anisotropic criterion is that it usually involves six stress components, instead of three principal stresses. As such, anisotropic criteria usually lead to complicated mathematical …

    mit Repository record

  14. A structure from motion photogrammetric method for continuously measuring and tracking the deformations of soils during triaxial testing

    Xia, XiaolongMissouri University of Science and Technology

    … soil deformation characteristics during triaxial testing is an important part of characterizing the stress-strain behavior of both saturated and unsaturated soils. The total and local deformations and volume changes of a soil specimen are indispensable parameters that need to be measured …

    must-thes Repository record

  15. Impact of Lime on the Mechanical Properties of HMA Mixtures in Nevada

    Sequeira Rojas, Wendy2009

    … other performance benefits. Second, because testing is typically performed on only the HMA mix being considered for a project, and only as necessary to satisfy specifications, typical studies do not capture the full range of failure modes and environmental stresses. Furthermore, once …

    unr Repository record

  16. Shear Strength Parameters of Sand Fly Ash Cement Mixtures

    Spears, Oksana NikolayevnaUNF Digital Commons2014

    … soils. Two mix designs were developed and tested using consolidated undrained, unconfined compression, and triaxial testing. Mix designs consisted of 15% fly ash with 0.5 or 1% cement, and poorly graded Ottawa sand compacted using a standard effort at 10 percent moisture content. …

    unf Repository record

  17. The mechanics of an unbonded locked sand at low effective stresses

    Bhandari, Athma RamUniversity of Southampton2009

    … sands. This cannot be done in a conventional triaxial test with conventional instrumentation alone. To address this shortcoming, a digital image-based deformation measurement technique has been developed. Three digital cameras placed on radii at intervals of 120 degrees viewed on plan outside …

    soton Repository record

  18. Constitutive relationships for agricultural soils

    Brandon, Joseph RobertVirginia Polytechnic Institute and State University1987

    Undrained triaxial tests were conducted to develop the constitutive relationships for two agricultural soils, which could be used for the finite element analysis of multipass effects of vehicles on soil compaction. Sandy-clay and sandy-silt samples were loaded and unloaded three times to levels of …

    vt Repository record

  19. Enhanced Anisotropic Bounding Surface Model: Implementation and Simulation of Excavation in Soft Cohesive Soils

    Hung, Ching2013

    … against undrained isotropic and anisotropic triaxial test results for various types of cohesive soils, including those with strain softening behavior. The capability and limitation of the bounding surface models are assessed, and it is confirmed that complex soil behavior, such as the effects …

    columbia-diss Repository record

  20. An Examination of the Validity of Steady State Shear Strength Determination Using Isotropically Consolidated Undrained Triaxial Tests

    Porter, Jonathan R.Virginia Tech1998

    … isotropically consolidated undrained (ICU) triaxial tests. The triaxial test was developed for measuring peak strengths, which typically occur at small strains, but steady state conditions typically occur at much larger strains. At large strain levels, the suitability of conventional …

    vt Repository record

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