Electrokinectic soil remediation
Động đất (Soil Dynamics) - tài liệu tiếng Anh
... SOIL DYNAMICSArnold VerruijtDelft University of Technology1994, 2008A. Verruijt, Soil Dynamics : 1. VIBRATING SYSTEMS 10The response ... methods, in order to be able to compare the solutions with various problemsfrom soil dynamics. In many cases a problem from soil dynamics can be reduced to an equivalent single mass system, with an ... conditions for a plane wave applied at the end x = 0 of a semi-infinite column of soil, with the wave being applied both tothe soil and the fluid, as in the experiments of Van der Grinten (1987) and Smeulders...
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CRITERIA OF ACCEPTANCE FOR CONSTANT RATE OF STRAIN CONSOLIDATION TEST FOR COHESIVE SOIL
... Convergence of undrained and drained cv values shows that CRS soil sample reach the stable condition from top to bottom of the soil sample. Poor CRS test results are obtained because of the ... Compression Index for 100 kPa Pre-consolidation Pressure CRS test Compression Index (cc) Soil Sample Strain rate for CRS test Based on Void ratio Based on Normalized void ratio cc ... conventional oedometer test at 200 kPa pre-consolidation pressure sample. All the four types of soil sample produced acceptable compression index values for CRS test which are within the range...
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CONSOLIDATION ANALYSIS OF EMBANKMENT IN STAGED CONSTRUCTION ON SUBGRADE SOFT SOIL
... EMBANKMENT IN STAGED CONSTRUCTION ON SUBGRADE SOFT SOIL ABSTRACT Earthfill dam requires relatively good soil bed as bearer, where the soil consolidation can subside due to excessive loading. ... to be supplied near the dam site. Embankment dams on soft subsoil are often constructed in stages in order to pre-settle the soft subsoil, and dissipate the excess pore pressure during the construction. ... engineering of geotechnical problems. Keywords: consolidation, embankment, staged construction, soft soil. INTRODUCTION Construction of embankment dams has an economical advantage; i.e., the dam...
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boundary element methods for soil structure interaction
... RESPONSE SPECTRARANDOM LOADINGMONTE CARLO SIMULATIONSRANDOM BOUNDARIES SOIL MODELLINGFOUNDATIONSSLOPE STABILITYCONSOLIDATION SOIL- STRUCTURE INTERACTIONEARTHQUAKE SOURCE MECHANISM3.Integral ... random variables the Karhunen Loeveexpansion of the soil parameters (21) provides a simple way to build a set ofmechanical models for the soil in accordance with the available knowledge on thephysical ... and a displacementfield denoted by is radiated in the soil. This field satisfies the followingBoundary Value Problems :COMPUTATIONAL SOIL- STRUCTURE INTERACTION75When interfaces are kept...
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DIRECT TREATMENT OF POLLUTED RIVER WATER BY THE MULTI-SOIL-LAYERING METHOD
... Matsue 690-0011, JapanABSTRACTSix Multi -Soil- Layering systems with combinations of two type of soils, Andisol (volcanic ash soil) andEntisol (granitic sandy soil) , two particle size classes of zeolite, ... granitic sandy soil (MASA soil) , and two sizes of zeolite with its diameter of 1-3 and 3-5mm,were used for comparison of efficiencies of materials. Soil mixture layers composed of soil (Andisol ... wascomposed of soil mixture layers and zeolite. Six sets of MSL systems were constructed and operated withsix different conditions (Table 1). Two types of soils: Andisol, humus rich volcanic ash soil, ...
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ARSENIC POLLUTION IN SOIL AND GROUNDWATER OF BANGLADESH
... - 125 - ARSENIC POLLUTION IN SOIL AND GROUNDWATER OF BANGLADESH M. Hamidur Rahman* & Hiroaki Ishiga** *Department ... Contamination In Groundwater Of Bangladesh Field experience and available data shows that both soil and under groundwater of a vast area of Bangladesh has been threatened with arsenic contamination ... Samta village under Sharsa Police station of Jessore district, Bangladesh for the collection of soil samples for Analysis in the laboratory. About 50 g of each sample was dried at 110 °C, and...
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EMPIRICAL STUDY ON EFFICIENCY AND SUSTAINABILITY OF SOIL PURIFICATION FACILITY FORDISCHARGED POLLUTANTS FROMROAD SURFACE
... with soil of 45 cm depth. Tank A consisted of two types of soil, 5 cm deep Akadama soil in the top layer and 40 cm deep pit sand in the bottom layer. Tank B consisted of only pit sand. Soil ... water quality analysis. Soil was sampled from both the surface and at a depth of 5cm for soil content analysis. In Tank A, which consisted of two types of soil, only Akadama soil was sampled. Sampling ... Tank B after soil replacement was lower than that before soil replacement. This could be attributed to the fact that the soil was unstable after replacement and therefore some of the soil may have...
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Salts Transport in Alkali Soil Reclamation by Gypsum and Prediction of Na Leaching in Field in China
... movement in soils. Interacting processes in soil science. CRC Press. Boca Raton. Fla. Suarez D.L. et al. (1984). Effect of pH on saturated hydraulic conductivity and soil dispersion. Soil Sci. ... fields could be predicted using the results of the soil column experiment. MATERIALS AND METHODS Soil sampling and soil chemical analysis Soil samples were collected at Kangping (42゜70' ... addition of gypsum to the soil In soil with salt accumulation, such as alkali soil, excessive Na carbonate or bicarbonate cause an increase in the pH of the calcareous soil. This degrades the...
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Effect of Calcium and Magnesium Addition on Arsenic Leaching from Paddy Field Soil of Bangladesh
... with original As contaminated soil collected from the paddy field of Bangladesh. MATERIALS AND METHODS Soil sample collection and characterizations Surface soil samples (0 - 10 cm) collected ... Japan). RESULTS AND DISCUSSION Soil Sample Characterization The chemical and physical properties of soil sample are shown in Table 2 indicating that the soil was slightly acidic in nature ... indicates the soil texture as silty sand. The background concentration of total As in the studied soil was 109 µg/g which was higher than the As concentration of irrigation contaminated soil (46...
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