2 edition of Consolidation characteristics of sand-clay mixtures found in the catalog.
Consolidation characteristics of sand-clay mixtures
Donald G. Anderson
Written in English
|Statement||by Donald Gordon Anderson.|
|The Physical Object|
|Pagination||57 leaves, bound :|
|Number of Pages||57|
transport processes occurring in sedimentary basins. Mechanical compaction of sand/ clay mixtures depends on the clay content, the effective stress history, and both the mechanical compaction coefficients and the depositional porosities of the two end-members (clean sand and pure shale). The porosity/depth profiles of siliciclasticCited by: The density and compressibility of miscible and immiscible air–water mixtures are formulated on the basis of the conservation of mass. Boyle's Law accounts for the compressibility of free air and Henry's Law accounts for the amount of air that goes into by:
tests contained mixtures of clay, silt, and sand. The authors found that increases in gravel sizes produced increases in shear strength. The density of the experimental clay-rock mixtures reached a maximum at approximately 50% gravel content, then decreased rapidly with increasing gravel concentrations. At this point, particle contact must haveFile Size: 2MB. sand–bentonite mixtures are investigated to support recommendation for a cost-effective liner material with three different local soils. A series of standard compaction tests, a one-dimensional consolidation test for compressibility and permeability characteristics, and an.
CONSOLIDATION CHARACTERISTICS OF SAND-CLAY MIXTURES INTRODUCTION A soils problem of particular interest to the engineer is the dis-placement induced at the boundary of a soil deposit by application of building loads. The magnitude of this deformation often controls the . a study of consolidation behaviour of sand and silt-clay-fraction mixtures Most soils in nature are neither clays nor pure sand, but are mixtures of clays, silts, sands, and possibly even gravels. The role of silt-clay fraction on the consolidation behaviour of sandy soil has been studied.
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Combinations of cohesive and cohesionless soils are often encountered when evaluating the engineering properties of soils. The stress-volume characteristics of the mixed soil are found to vary according to the proportion of each : Donald G.
Anderson. The current study is an attempt to understand the influence of sand particle size on the consolidation characteristics of sand–bentonite mixtures. Fine sand–bentonite and medium sand–bentonite mixes were prepared with sand content ranging from 50 to 90% by dry weight and tested for consolidation characteristics.
Consolidation characteristics of sand-clay mixtures grained behavior.\ud The purpose of this investigation was to establish a method for\ud predicting the compressional characteristics of a mixture controlled\ud by cohesive materials and to determine the percentage at which the\ud cohesionless soil began to control the behavior.\ud The two.
Swell and consolidation characteristics of these artificially prepared sand-clay mixes were studied in one dimensional consolidometer. Fine sand content and fines content in the expansive soil.
Engineering characteristics of sand-clay mixtures used for clay cores of earth-fill dams Z. Gökalp Erciyes University Seyrani Agricultural Faculty, Agricultural Structures and Cited by: 1. Laboratory tests on sand–marine clay mixtures reveal that the effect of sand mass fraction on the overall consolidation behavior is negligible for a sand mass fraction of 20% or less.
Further increase of the sand fraction significantly affects the overall consolidation process. To describe this behavior, a consolidation model is proposed within a homogenization framework. 1-D swell-consolidation tests were conducted on the sand-clay blends by free swell method.
Swell potential, swelling pressure, compression index and coefficient of compressibility were determined. The dry unit weight of the expansive soil was kept constant at 12 kN/m 3. Oven-dry soil passing µm and 75 µm sieve was used for the.
Sand-clay liners utilize expansive clay to act as a filler to occupy the voids in the sand and thus reduce the hydraulic conductivity of the mixture. The hydraulic conductivity and transfer of water and other substances through sand-clay mixtures are of prime concern in the design of liners and hydraulic by: 5.
A theory of seepage consolidation is described which uses the (non-seepage) sedimentation data to predict the water permeability of the sediment when seepage through a pervious bottom takes place.
Introduction. Most of the studies concerning the stress–strain and shear strength behavior of granular soils mainly inspected the response of clean sands. However, field observations show that granular soils may contain a considerable amount of clay and/or by: and grain characteristics.
3 UNDRAINED CYCLIC SHEAR PROPERTIES The specimens of sand-clay soil mixtures prepared by compaction and pre-consolidation methods were isotropically consolidated at an effective confining pressure of c’= kPa.
Then, undrained cyclic triaxial tests were conducted with. Consolidation properties of bentonite-sand mixtures, as reclamation materials, were investigated in the one-dimensional consolidation test.
From the relationships between the void ratio of nonclay fraction and consolidation pressure was found the existence of a threshold void ratio at which the frictional resistance becomes dominant during by: In this work, the shear strength and consolidation characteristics of clay, clay with an ordinary sand column (OSC) and clay with a geotextile encased sand column (GESC) were investigated by carrying out laboratory direct shear and oedometer tests to study the response of the reinforced clay composite under both lateral and vertical loading Cited by: 1.
In general, very few macroflocs (D f > μm) were generated within these sand-clay mixtures, suggesting that the presence of the fine sand inhibits flocculation either through direct inter-fractional (sand-clay) collisions and/or induced shear due to differential settling effects, as initially hypothesised by Cuthbertson et al.
().Cited by: 5. The Compressibility and Swell of Mixtures for Sand-Clay Liners Muawia A. Dafalla Bugshan Research Chair in Expansive Soils, Department of Civil Engineering, King Saud University, RiyadhSaudi Arabia Correspondence should be addressed to Muawia A. Dafalla; [email protected] Received 1 November ; Revised 1 January ; Accepted 13 March ; Published 10 April Cited by: 5.
Duttine A., Di Benedetto H., Pham Van Bang D., Ezaoui A. Anisotropic small strain elastic properties of sands and mixture of sand/clay measured by dynamic and static methods.
Soils and Foundations (submitted) Google ScholarCited by: 6. The compressibility and swell nature of sand-clay mixtures is of great importance. Highly expansive material can expand to a stage that is likely to cause excessive distortion to surfaces or provide an uneven support for foundations and light structures.
The response to loads and stresses on sand-clay mixtures has been studied by many researchers. Undrained cyclic shear characteristics of silt and sand mixtures 3 where eg is the granular void ratio of the sand-clay mixture, Vw is the volume of water, Vss is the volume of the coarser grains and Vsc is the volume of the finer grains.
Figure 2 provides the relation between granular void ratio, g, and fines content, after e Fc consolidation. Sand-clay mixtures are commonly used as a liner/barrier material in various engineering applications, such as construction of hydraulic and waste containments.
Permeability, compressibility and strength are important properties of sand-clay mixtures and are often required for the design of the liner/barrier of the containments.
In states like Western Australia, which is covered mostly by sandy Cited by: 4. The soil mixtures were obtained by blending clayey silt and sandy soil mechanically. The clayey silt soil used here was natural clay and the sand was available commercially.
Clean sand with three different grain size distributions has been mixed w 20, 30 and 40 % natural clay to form different sand-clay soil mixtures. Therefore, a four-phase analysis framework of sand–clay mixtures was introduced to unify the intrinsic compression behavior of soils with and without sands.
It was found that the updated clay void index I vc parameter was effective to unify the soil’s compression behavior by excluding the influence of sand particles in clays before the sand Cited by: Pure clays or sand-clay mixtures with different clay mineral are widely used in liners or vertical barriers of waste landfill, and the pore water was characterized by its high salinity in coastal area.
Thus, it is essential to understand the salinity effects on their consolidation : Tongwei Zhang, Yongfeng Deng, Haocheng Xue, Xingjun Zhang, Shijun Wang. Part II: Permeability characteristics Canadian Geotechnical Journal 20 4 pp A.M. Samarasinghe Y.H. Huang V.P.
Drnevich Permeability and consolidation of normally consolidated soils Journal of the Geotechnical Engineering Division 6 pp Cited by: 2.