Unsaturated Soils
Predicting the Collapsibility Potential of Unsaturated Soils Using Adaptive Neural Fuzzy Inference System and Particle Swarm Optimization
... these soils is a function of an eective stress principle [7]; however, considering this principle for unsaturated soils has been only successful to a limited extent that requires more studies and ...
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A Flexible Model for Moisture Suction Relationship for Unsaturated Soils and Its Application
... of unsaturated soil me- chanics and its applications in the design and construc- tions of safe and economical geotechnical engineering structures is realized by not only the academic research- ers but also by ...
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WATER RETENTION IN UNSATURATED SOILS SUBJECTED TO WETTING AND DRYING CYCLES
... Recent discussions on stress frameworks for unsaturated soils [28]; [29] propose to scale down the analysis to the pore scale to understand the physical implications of saturation. The water retention curve ...
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Innovative Analytical Solutions to 1, 2 and 3D Water Infiltration into Unsaturated Soils for Initial-Boundary Value Problems
... Wang et al. [17] developed an algebraic solution to one-dimensional water inltration and redistribution without evaporation. They established a relationship between Green-Ampt model and the algebraic solu- tion to ...
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An evolutionary approach to modelling the thermo mechanical behaviour of unsaturated soils
... Khalili and Loret (2001) presented an alternative theory for heat and mass transport through deformable unsaturated porous media. They extended their previous work (Loret & Khalili, 2000) on fully coupled ...
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Evaluation of the Effectiveness of Flexible PVC Plastic Material on Unsaturated Soils
... The main goal of this research is to compare the effectiveness of flexible PVC plastic granules on two different types of unsaturated soils. That means on cohesive highly compressive (CH) soil and ...
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Predicting the effective stress parameter of unsaturated soils using adaptive neuro-fuzzy inference system
... In this study, the datasets used to develop two ANFIS models were derived from 120 collected data from the literature [40-49]. These data were associated with the results of triaxial, shear, pressure plate, and lter ...
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Prediction of unsaturated soils effective stress parameter using gene expression programming
... Abstract. Unsaturated soil shear strength can be determined using eective stress relation that depends on the eective stress parameter. Several models have been developed in the past few years to estimate this ...
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A SIMPLE TECHNIQUE FOR ESTIMATING THE COEFFICIENT OF PERMEABILITY OF UNSATURATED SOILS
... saturated soils is considered to be a function of void ratio, e, and assumed to be constant value (Lambe and Whitman, ...for unsaturated soils (Freeze, 1971, Lam et al, 1987). The unsaturated ...
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Thermo-Hydro-Mechanical analysis of evaporation from unsaturated soils
... Gatmiri (1997) formulated a framework of non-isothermal behavior of unsaturated porous media. His study presented a set of fully coupled thermo-hydro-mechanical equations for saturated and unsaturated ...
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Numerical analysis of seepage–deformation in unsaturated soils
... Keywords: unsaturated soil, water infiltration, seepage-deformation coupled analysis, finite.. There are currently many geotechnical engineering problems that are related to unsaturated [r] ...
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Effects of Salts on Oxygen Diffusion Rate Measurements in Unsaturated Soils
... The experiments reported in this paper attempted to demonstrate the similarity of conditions discussed imme- diately above and use partially immersed electrodes to establish the magnit[r] ...
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Development of Dynamic Simple Shear Apparatus for Small Strain Dynamic Tests on Unsaturated Granular Soils by Bender Element and Ultrasonic Sensors
... Shear modulus and confined modulus are important parameters for static and dynamic analysis in geotechnical applications. Cyclic simple shear apparatus had been developed by mounting bender element and ultrasonic sensors ...
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The strength of unsaturated bentonite-enhanced sand
... of unsaturated ®ne-grained soil within a critical-state framework ...for unsaturated soils based on the stress variables of the mean net stress and ...
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Pile-Soil Interaction in Unsaturated Soil Conditions
... in unsaturated soil conditions presents a new set of ...in unsaturated soils will vary significantly from foundation response in saturated or dry ...soils. Unsaturated soils are ...
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Effect of biochar on the unsaturated hydraulic conductivity of two amended soils
... range. Therefore, the observed hydraulic properties at different matric potential values were fitted using van Genuchten-Mualem’s expression (van Genuchten, 1980) by means of RETC software (van Genuchten et al., 1991), ...
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Measuring Unsaturated Soil Moisture Flow with a Meter
... One problem did develop while measuring thermal mois- ture transport in the loamy sand sample. When the suction on the transducer was more than 300 cm of water, the thermally driven vap[r] ...
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Thermal conductivity of unsaturated clay rocks
... of unsaturated clay-rich materials has applications to the characterization of the thermal anomalies associated with ground water flow in hydrothermal systems (Jardani and Revil, 2009), climate change (Kooi, ...
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MODELLING FLOW AND TRANSPORT IN UNSATURATED ZONE.
... of unsaturated flow and transport models in a predictive mode at the larger ...the unsaturated zone of aquifers containing fractures and karstic conduits is needed for future ...
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Organocatalytic Michael addition–lactonisation of carboxylic acids using α,β unsaturated trichloromethyl ketones as α,β unsaturated ester equivalents
... Herein an isothiourea-catalysed Michael addition-lactonisation process using 2-aryl and 2-alkenylacetic acids and bench-stable α,β-unsaturated trichloromethyl ketones as ester and amide equivalents is reported ...
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