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Showing 1 to 20 of 47 for “"undrained shear strength"”.
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Investigation of effects of disturbance on undrained shear strength of Boston Blue Clay.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1966. M.S.
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Determination of the undrained shear strength of very soft cohesive soils by a new fall cone apparatus
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
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A Regional Study on Champlain Sea Clay: Empirical Prediction of Consolidation Parameters and Statistical Characterization of Undrained Shear Strength Based on Historical Geotechnical Data
… In many scenarios, significant post-peak shear strength loss can trigger progressive failures. There are conventional methods and recently developed advanced techniques that can be used for reliably determining and interpreting the behavior of CSCs. For example, settlement behavior can be …
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Interpretation of cone penetration test data for underconsolidated clay
… cone penetration test data is correlated to vane shear and triaxial undrained shear strength test data for a saturated and underconsolidated marine clay. It is shown that cone penetration test data not corrected for pore pressures underestimates undrained shear strength. Additionally, small …
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The influence of effective consolidation stress on the normalized extension strength properties of resedimented Boston blue clay
The ability to accurately determine the undrained shear strength of cohesive soil is of particular importance to the practice of geotechnical engineering. Ladd & Foot (1974) presents a method to determine the undrained shear strength based on the concept of normalized soil parameters; called the …
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Contribuição ao estudo da resistência não-drenada e secagem dos solos compactados em laboratório das áreas de empréstimo da barragem Palmar
The undrained shear strength of compated, unsaturated soils as determined triaxial tests with the relationship K=σ3/ σ1 = constant lead to two realationships: the first related with the parameter (e√S)o at the beginning of the test and the second with the sarne parameter (e√S)£ at failure. The …
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Effective and total stress strength interpretation for silts
… 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 angle were evaluated using the CU triaxial test results. Undrained strength parameters were determined from …
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Effect of reconstituted method on shear strength properties of peat
… soil contains more than 75% organic content. Shear strength of the soil is one of the most important parameters in engineering design, especially during the pre-construction and post-construction periods, since used to evaluate the foundation and slope stability of soil. Peat normally known as …
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Determination of geotechnical properties of seafloor sediment using a free fall penetrometer
… type and determine physical properties such as undrained shear strength, coefficient of consolidation and shear modulus for soft fine-grained sediment.</p><p>Acceleration signals from drops of a free fall penetrometer contain information about the nature of the seafloor. A simple sediment …
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In-Situ Geotechnical Characterization of Soft Estuarine Surficial Sediments Using a Portable Free Fall Penetrometer
… to provide initial information on sediment type, strength, and stratification, but challenges with the calibration of empirical parameters such as the cone factor and strain rate factor hampered the derivation of geotechnical design parameters such as undrained shear strength. This challenge …
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Electrokinetic Dewatering of Oil Sands Tailings
… simultaneously. The final water content, undrained shear strength and plasticity properties of MFT were measured after the EK dewatering tests. After the EK dewatering model tests, a significant overall increase in the undrained shear strength and decrease in the water content of tailings …
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Normalized mechanical properties of resedimented Gulf of Mexico clay from Integrated Ocean Drilling Program Expedition Leg 308
… an increase in Ko values there is a decrease in undrained shear strength, which is in accord with research completed on resedimented Boston Blue clay (RBBC) at MIT and also intact material that was recovered from this expedition. Undrained shear strength of the material is between 0.24 and 0.27, …
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Implementation and evaluation of a recently developed rate-dependent effective stress soil model 'MIT-SR'
… field play a vital role in the interpretation undrained shear strength. For the FDPM case, using the same expansion rate, the disturbed NC RBBC can have as low as 40% of the undrained shear strength of the undisturbed NC RBBC. In contrast, for the SBPM case, the disturbed NC RBBC tend to have a …
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Ground improvement using vacuum preloading together with prefabricated vertical drains
… nature of lateral displacements, and increase in undrained shear strength due to vacuum preloading. As a consequence, modifications to existing consolidation theories and separate design procedures have been proposed to incorporate the effects of vacuum pressure during the preloading operation. …
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A study on chemical stabilization of Oil Sands Mature Fine Tailings
… a series of laboratory tests in terms of the undrained shear strength (Su) and solid content (S%), plasticity and pore fluid chemistry. The gel time and gel syneresis of silicate grouts are studied. Scanning electron microscopy (SEM) observations and X-ray diffraction (XRD) analyses are …
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An Examination of the Validity of Steady State Shear Strength Determination Using Isotropically Consolidated Undrained Triaxial Tests
The assessment of the shear strength of soil deposits after the occurrence of large strains is an important issue for geotechnical engineers. One method for doing so, the steady state approach, is based on the assumption that the steady state undrained shear strength is a unique function of the in …
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Investigation of the Relationships Between Geotechnical Sediment Properties and Sediment Dynamics Using Geotechnical and Geophysical Field Measurements
… density and friction angle for sand and undrained shear strength for clays), relevant for local sediment dynamics, and (3) investigating how relevant geotechnical properties are reflected in acoustic, and specifically chirp sonar measurements. The findings of this research support the …
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Influence of Geotechnical Properties on Sediment Dynamics, Erodibility, and Geomorphodynamics in Coastal Environments Based on Field Measurements
… content, relative density, bearing capacity, and undrained shear strength have been discussed in the context of coastal sediment dynamics. However, these properties have rarely been assessed in their respective relevance or quantitatively related to sediment transport and erodibility. Also, to …
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Rate-Dependent Behavior of Clay
… loading conditions and predicts both drained and undrained behaviors at small and large strains. Model parameter values are determined for Boston Blue Clay, London Clay and Kaolin Clay. The performance of the model in simulating the mechanical response of clays is demonstrated for a variety of …
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Ensaios de palheta de campo em argilas moles da Baixada Fluminense
… Vane Test Apparatus", to determine the in situ shear strength of three deposits of a very soft plastic clay in Rio de Janeiro, Brazil. The author comments the performance of the equipment used and suggests some modifications. A bibliographic review on this subject is presented, and the variation …
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