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- 3D synchrotron micro-computed tomography (1)
- Big Data Nanoindentation (1)
- DEM modeling (1)
- Fines clogging (1)
- Fly ash (1)
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- Fracture of silica sand (1)
- Gas hydrates (1)
- Gaussian Mixture Modeling (1)
- Geopolymer (1)
- Hardness (1)
- Ideal Sampling Approach (1)
- Metakaolin (1)
- Na/Al molar ratio (1)
- Oedometer test (1)
- Saline water (1)
- Sample disturbance (1)
- Screw plate load test (1)
- Shale (1)
- Shale Softening (1)
- Si/Al molar ratio (1)
- Silt (1)
- Soil characterization (1)
- Tortuosity (1)
- Triaxial test (1)
- Young's Modulus (1)
Articles 1 - 4 of 4
Full-Text Articles in Engineering
3d Study Of Gas Hydrate Formation And Dissociation In Porous Media And Dem Modeling Of Granular Materials, Zaher Jarrar
3d Study Of Gas Hydrate Formation And Dissociation In Porous Media And Dem Modeling Of Granular Materials, Zaher Jarrar
Doctoral Dissertations
Natural methane gas hydrates availability and ongoing rise in demand for energy, motivated researchers to consider gas hydrates as a potential energy source. Production of methane from hydrate-bearing sediments requires hydrate dissociation for releasing mobile methane gas in sediments prior to gas production operations. Fines may migrate through or clog the pore space of sandy sediments depending on the geometry and topology of the pore space. This dissertation employs unique in situ experiments and techniques to gain a comprehensive understanding of the associated physical processes (such as fines migration, clogging and gas driven fracture) and validation of hydrate dissociation models’ …
Characterization Of A Natural Clayey Silt And The Effects Of Sample Disturbance On Soil Behavior And Engineering Properties, Øyvind Blaker
Characterization Of A Natural Clayey Silt And The Effects Of Sample Disturbance On Soil Behavior And Engineering Properties, Øyvind Blaker
Doctoral Dissertations
Silts are considered a challenging material to deal with in geotechnical engineering design practice and there has been limited research on determining the engineering parameters of silts either by in situ or laboratory testing. This thesis presents results of an extensive research program that investigated the in situ and laboratory behavior of a low plasticity silt deposit at the Norwegian National Geotechnical Test Site at Halden, Norway. Results from multiple in situ tests including: piezocone, pore pressure dissipation, in situ pore pressure measurements, field vane, self-boring pressuremeter and screw plate load tests were synthesized to characterize the Halden silt. Soil …
Synthesis And Characterization Of Geopolymers Cast And Cured In Saline Water And The Potential Application In Construction Engineering, Xiaonan Ge
Doctoral Dissertations
The characteristics of underwater cast and cured geopolymers were experimentally studied to understand the interactions between geopolymer slurry and curing saline water and pertinent effects on its strength development. Geopolymers were synthesized from a mixture of Class C fly ash and metakaolin, and the influences of two different Si/Al molar ratios (1.78 and 2.00) and four different Na/Al (0.67, 0.80, 0.84, and 1.00) molar ratios were investigated, respectively. The geopolymer slurry was prepared and then cast into porous molds, followed by immediately submerged into 0, 15, and 35 ppt saline solutions (prepared with commercial seasalts) for 28-days’ curing in ambient …
Nanoindentation Characterization Of Elastic Properties Of Shales And Swelling Clay Minerals, Shengmin Luo
Nanoindentation Characterization Of Elastic Properties Of Shales And Swelling Clay Minerals, Shengmin Luo
Doctoral Dissertations
Oil and gas shales are a class of multiscale, multiphase, hybrid inorganic-organic sedimentary rocks that consist of a generally uniform, preferentially oriented clay matrix with randomly embedded silt and sand particles as solid inclusions. A thorough understanding of the mechanical properties of shales is crucial for the exploration and production of oil and gas in the unconventional shale reservoirs, but it can be a challenging task due to their nature of compositional heterogeneity and microstructural anisotropy. In efforts to better characterize the mechanical properties of shales across different length scales and to fundamentally understand the laws of upscaling from individual …