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Now showing items 11-20 of 27
Discrepancy in the Critical State Void Ratio of Poorly Graded Sand due to Shear Strain Localization
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American Society of Civil Engineers (ASCE)
, 2020 , Article)
The critical state (CS) concept is a theoretical framework that models the constitutive behavior of soils, including sand and other granular materials. It supports the notion of a unique postfailure state, where the soil ...
Fines effect on gas flow in sandy sediments using μCT and pore networks
(
Elsevier
, 2022 , Article)
Gas production from hydrate-bearing sediments requires methane dissociation, which induces two-phase gas flow, mobilizing fine clay particles from within saturated pores. Fines migration within sandy sediments results in ...
New model for estimating geometric tortuosity of variably saturated porous media using 3D synchrotron microcomputed tomography imaging
(
John Wiley and Sons Inc
, 2021 , Article)
Tortuosity has a significantimpact on flow and transport characteristics of porous media and plays a major role in many applications such as enhanced oil recovery, contaminant transport in aquifers, and fuel cells. Most ...
Enhancement of Naphthalene Degradation by a Sequential Sulfate Injection Scenario in a (Semi)-Arid Coastal Soil: a Flow-Through Reactor Experiment
(
Springer
, 2020 , Article)
Engineered sulfate injection has been introduced as an effective technology to enhance the remediation of soil and groundwater contaminated by petroleum hydrocarbons. While some studies indicate that sulfate injection is ...
Effects of soaking process on CH4-CO2 replacement efficiency for hydrate-bearing sediments
(
Elsevier
, 2021 , Article)
CH4-CO2 replacement method has the advantages of sequestering carbon dioxide and sediment stability compared to other methods such as depressurization and thermal stimulation. However, the production efficiency using CH4-CO2 ...
Effects of dissolved organic phase composition and salinity on the engineered sulfate application in a flow-through system
(
Springer
, 2020 , Article)
Engineered sulfate application has been proposed as an effective remedy to enhance the rate-limited biodegradation of petroleum-hydrocarbon-contaminated subsurface environments, but the effects of dissolved organic phase ...
Release of colloids in saturated porous media under transient hydro-chemical conditions: A pore-scale study
(
Elsevier
, 2021 , Article)
The deposition and consequent release of colloids pose a significant challenge to the environment, groundwater quality and human health. Subsurface soil contains numerous types of colloids that exhibit a diverse range of ...
Colloid retention and mobilization mechanisms under different physicochemical conditions in porous media: A micromodel study
(
Elsevier
, 2021 , Article)
Clear understanding of pore-scale mechanisms that control transport and retention of colloids in porous media at different physicochemical conditions is critical to improve design and efficient cleanup methodologies of ...
3D measurements of hydrate surface area during hydrate dissociation in porous media using dynamic 3D imaging
(
Elsevier
, 2020 , Article)
A better understanding of the kinetics of hydrate dissociation is essential to reliably predict gas production potential from natural hydrate reservoirs. Most hydrate dissociation models assume hydrates to be a constant ...
Three-Dimensional Evaluation of Sand Particle Fracture Using Discrete-Element Method and Synchrotron Microcomputed Tomography Images
(
American Society of Civil Engineers (ASCE)
, 2020 , Article)
Recent research showed that fracture of sand particles plays a significant role in determining the plastic bulk volumetric changes of granular materials under different loading conditions. One of the major tools used to ...