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Showing 1 to 20 of 36 for “"fine-grained soils"”.
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Rate Effects in Fine Grained Soils
The strain rate dependent behaviour of fine grained soils is an important aspect of geotechnical engineering. During dynamic or rapid events such as earthquakes and rapid pile testing, a fine grained soil will display significantly different behaviour than may be observed over the long life span of …
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Small strain stiffness of fine grained soils
… overconsolidation ratio, was investigated for fine grained soils of different plasticity (P1 - 11-41). The dependence of the very small strain stiffness of fine grained soils on stress state and history could be conveniently expressed as: where Pr is a reference pressure introduced to render …
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Swelling behaviour of unsaturated fine grained soils
… the swelling behaviour of unsaturated fine grained soils by means of various laboratory tests such as a 100 mm stress path triaxial cell and a computer controlled oedometer. Centrifuge modelling was used as a link between the laboratory tests performed and an existing prototype …
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Measurement of electromagnetic signal velocities in saturated fine-grained soils
… velocity is frequency dependent, such as in finegrained soils. Therefore, Quarter-Wavelength Analysis was developed for measurements of velocities in fine-grained soils. The developed measurement cell was used to undertake velocity measurements in parallel with geotechnical index tests, in …
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STRUCTURE, GEOLOGY, AND ENGINEERING PROPERTIES OF TWO CARBONATIC FINE-GRAINED SOILS
Soft, carbonate-rich, fine-grained soils are commonly found in the glaciated regions of the northern United States and throughout Canada. In addition to the high compressibility potential and low shear strength, these sediments are typically characterized by alternating layers of silts and clays as …
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The impact of sample scale on the compressibility parameters of saturated fine-grained soils
… sample scale on the compressibility behaviour of fine-grained soils is crucial in many applications, such as roads, embankments and foundations. The effect of sample scale represents a challenge when obtaining engineering parameters in the laboratory compared to those obtained in the field. This …
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The permeability of fine grained soils: an investigation into unconventional methods of measurement in the laboratory
… (BS) test, for permeability testing of fine grained soils, is known to have a relatively long test duration. Consequently, a reduction in the required time for a soil permeability test provides potential cost savings, to the construction industry (specifically, for use during CQA of …
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Laboratory evaluation of the constant rate of strain and constant head techniques for measurement of the hydraulic conductivity of fine grained soils
… for measurement of the hydraulic conductivity of fine grained soils. A laboratory program compares hydraulic conductivity measurements made using both measurement techniques on a total of 12 specimens. Both resedimented and intact materials covering a wide range of plasticity are investigated. …
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Rapid Measurement and Estimation of Saturated Hydraulic Conductivity of Mineral Slurries
… dominating the long-term performance of fine-grained slurries with higher initial water contents. However, the determination of this function can be very challenging and time-consuming, considering the long duration of the conventional tests and significant variation in hydraulic …
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Three-dimensional non-linear finite element analysis of laterally loaded piles in clay
… laterally loaded single piles and pile groups in fine grained soils are investigated using a non-linear finite element methodology. The purpose is to gather behavioral information that would help improve our knowledge of pile behavior and enhance the applicability of some existing methods of …
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Rapid shear strength evaluation of in situ granular materials utilizing the dynamic cone penetrometer
… determination of the in situ shear strength of fine-grained soils. However, there were no ""rapid"" evaluation devices suitable for characterizing the in situ shear strength of granular materials."
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Characterization of Soft Clay and Clay-tire Interaction for the Prediction of Ground Mobility
Predicting tire performance on soft, fine-grained soils is required for many off-road explorations in the military, mining, agricultural, and earth-moving sectors. However, the mobility in deformable material is extremely challenging, especially in the presence of water. Although there is a …
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Advanced Testing and Characterization of Transportation Soils and Bituminous Sands
… to estimate strength and stiffness behavior of fine-grained soils and oil sand materials, and predict the amount of rutting and sinkage in the field.
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Assessment of the triaxial falling head permeability testing technique
… laboratory testing techniques in general use for fine-grained soils. In conjunction with this testing, the parameters which influence the measured coefficient of permeability were varied to evaluate the importance of each parameter on the results obtained from the triaxial falling head …
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Full-Scale Lateral-Load Tests of a 3x5 Pile Group in Soft Clays and Silts
… underlain by interbedded layers of sands and fine-grained soils. The piles were instrumented to measure pile-head deflection, rotation, and load, as well as strain versus pile depth.</p>
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Simple Techniques for the Implementation of the Mechanics of Unsaturated Soils into Engineering Practice
… research area of the mechanics of unsaturated soils. These advancements can be categorized into two groups; (i) development (or improvement) of testing techniques (or apparatus) to determine the mechanical properties of unsaturated soils and (ii) development of (numerical, empirical or …
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Estudo da eletro-osmose em solos finos
… using laboratory experiments, electro-osmosis in fine grained soils was surveryed under two dffferent aspects: the electro-drainage and the electro-hardenig. In relation to the electro-hardening, solutions of chemical products were injected into soil specimens by electro-osmosis, and the effects …
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The influence of loading rate on excess pore pressures in triaxial tests
… drainage or non-uniform pore pressures in fine grained soils. The work consisted of a combination of laboratory tests in which pore pressures were measured within triaxial samples, numerical analysis using the CRISP geotechnical finite element program and theoretical analysis. Both constant …
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Laboratory and Numerical Investigation for the Mobility of Ground Vehicles on Soft Clay
The mobility of ground vehicles on soft, fine-grained soils is hindered by low traction and reduced load-bearing capacity, posing significant challenges for heavy-duty vehicles, such as military transport and construction equipment. Enhancing vehicle stability on these terrains is essential for …
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Additive Manufacturing of Soil Using Bio-Cementation
… The cuboidal specimens were tested in unconfined compression and the results indicated a notable increase in soil strength for clay soils using this treatment method. This application method evades some complexities commonly faced with fine-grained soils. In addition, the potential of …
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