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Showing 1 to 20 of 52 for “"Silts"”.
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Identification and Stabilization of Problematic Silts
… of guidelines for stabilization of problematic silts. Using documented field experiences of the DOTD districts, the study presents a testing program to investigate the nature of the problem, the character of the silt materials, and their performance with modifying/stabilizing agents. Seven …
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The undrained behavior of saturated, dilatant silts
… in triaxial tests on saturated, dilatant silts. The literature indicates that ground water contains various amounts of dissolved gases and that gases dissolved in soil pore water will have sufficient time to exit solution to some extent, due to the pore pressure reductions which occur …
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Effective and total stress strength interpretation for silts
… which control the engineering behavior of silts. The methods of classifying silts at present do not provide much basis to infer how silts will behave in the field for design purposes. In the course of this research study, series of UU and CU triaxial test results of different silt samples …
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The strength deformation properties of Smith Bay arctic silts
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1986.
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Undrained triaxial strength-deformation behavior of Harrison Bay Arctic silts
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1985.
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Full-Scale Lateral-Load Tests of a 3x5 Pile Group in Soft Clays and Silts
<p>A series of static lateral load tests were conducted on a group of fifteen piles arranged in a 3x5 pattern. The piles were placed at a center-to-center spacing of 3.92 pile diameters. A single isolated pile was also tested for comparison to the group response. The subsurface profile consisted of …
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The in situ compressional wave properties of marine sediments
… types (medium to fine sands and medium to fine silts), with several closely spaced locations examined at each general site to assess the local variability in compressional wave properties. Spreading losses, which were adjusted for sediment type, were incorporated into the data processing. Also …
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Stratigraphy, magnetic susceptibility, and mineralogy of loess-paleosol sequences in southwestern Illinois and eastern Missouri
… within oxidized, C horizon Peoria and Loveland Silts along the Illinois and Mississippi Valleys. Lower Peoria and lower Loveland Silts (MS = 55-80 $\times\ 10\sp{-5}$ SI) and Roxana Silt (MS = 60-90 $\times\ 10\sp{-5}$) have high MS probably reflecting greater contributions from Superior Lobe …
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THE LATE QUATERNARY HISTORY OF THE RIVER ERME, SOUTH DEVON
… sands and gravels and brackish organic sands and silts. These are, in places, replaced at depth by shelly silts, sands and gravels deposited under more estuarine and marine conditions. The organic layer has been radiocarbon dated to between 1000 and 2000 years BP and has been correlated with a …
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Disaggregation of soil during slurry pipe jacking
… of London Clay, Upper Mottled Beds and Fleetwood Silts. In total 71 mixing tests were completed during the development of the test and the classifying of the soils. The test involved mixing distilled water with 10 clay cuttings for varying times. The resulting solid particles were then sized …
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Περιβάλλοντα αποθέσεως των ιζημάτων του Πηδάσου (Ν.Δ. Πελοπόννησος)
… carried out. The lower beds are sandy and clayey silts interbedded with conglomerate and are probably alluvial fan deposits. Overlying is a sei sequence of marine faciès, mostly deposited in a lagoon. Silty sand and clayey silt were probably built up in lagoonal euxinic bottom. Gradedwashover beds …
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Soil improvement by vertical drains
Vertical drains are used in soft clays and silts to accelerate primary consolidation. In this study a practical method for predicting the magnitude and rate of settlement and pore water pressure dissipation of soft clays under embankment type of loading is described. A computer procedure, ILLICON, …
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Soil washing and post-wash biological treatment of petroleum hydrocarbon contaminated soils
… soils. After washing, the finer soil particles (silts and clays) were found to possess higher concentrations of adsorbed hydrocarbons, thus requiring further treatment. Distribution of n-alkanes was studied to obtain a better understanding of contaminant redistribution and mass transfer during …
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An experimental investigation of the effect of slit length on the bursting strength of film and fabric plastic cylindrical shells
… film and fabric cylinders containing axial silts of various lengths. The results demonstrate that the fabric material is superior to the film material as regards residual strength in the presence of a slit. It is shown that the strength-weight ratio of the fabric cylinders is approximately …
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Mapping and Reconstructing the Paleotsunami Record in Queule, South-Central Chile
… layers alternating with dark brown organic-rich silts, which are older than 6280-6110 cal. years BP. The deepest studied layer is a thick, fine, gray sand. We interpret the gray sand as a submarine environment during the mid-Holocene sea-level high stand, and the alternating inorganic and organic …
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STRUCTURE, GEOLOGY, AND ENGINEERING PROPERTIES OF TWO CARBONATIC FINE-GRAINED SOILS
… typically characterized by alternating layers of silts and clays as well as high calcium carbonate content. The unique properties of these deposits make them challenging soils for geotechnical engineers. Despite the prevalence of soft carbonatic soils in Indiana and the concerns associated with …
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Evaluation of liquefaction potential of silty sand based on Cone Penetration Test
… are commonly involved, and in some cases even silts. This has generated a need for knowledge about the response of silty sands and silts under seismic loading. Related to this issue is the question of how best to determine the Iiquefaction resistance of these soils in a practical setting. This …
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The synecology of dense assemblages of the deposit-feeding Polychaete, Axiothella rubrocincta (Maldanidae)
… are wave exposure, sediment size (boulders to silts), penetrability and organic content of the substrate, frequency of log damage, and exposure to sunlight. Considering these physical differences and the fact that soft-substrate environments often support diverse communities, it is interesting …
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Performance of Improved Ground and Reinforced Soil Structures during Earthquakes – Case Studies and Numerical Analyses
… conditions, typically containing soft clays and silts and/or loose, liquefiable sands. Because the affected region is heavily developed with infrastructure and there is a preponderance of poor soils, a wide range of soil improvement measures had been used to mitigate anticipated earthquake …
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An investigation into the volume change characteristics of loess like soil in Mount Moorosi Village in Lesotho
… deposits. These included the porous clays, silts bonded by clay and silts coated with clay, which all rendered a metastable fabric. A comparison of the stressstrain graphical plots from the consolidated undrained tests at the field and saturated moisture contents indicated a drastic …
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