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641
Pore Structure and Permeability Variations during Gas Displacement in Unconsolidated Sandstone Reservoirs through CT Reconstruction Analysis
Published 2023-01-01“…The results indicated that a more than 3% increase in porosity after gas displacement resulted from the enlargement of the pore and throat with a diameter of more than 20 μm and 3 μm, respectively, owing to the release and migration of clay and fine particles, in spite of the distribution frequency decline of both pore and throat with a small diameter. …”
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642
Barrancas de Barrujón (Toledo, España, 2019)
Published 2021-01-01“…Barrancas de Barrujón (Toledo, Spain, 2019) This place is located 30 km from Toledo where the river Tajo creates an incision in detrital materials from the tertiary era (reddish clay rock), creating deep canyons near the Castrejón reservoir. …”
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643
Spatial distribution of fine-grained floodplain deposits and anthropogenic materials based on official borehole data in the floodplain of Leipzig, GermanyPANGAEA
Published 2025-02-01“…For that, a methodology was implemented to categorize those into 6 broader classifications (sand, gravel, clay, anthropogenic sediments, fine-grained/organic sediments and others) with 33 sub-categories. …”
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644
Instability Analysis of a Low-Angle Low-Expansive Soil Slope under Seasonal Wet-Dry Cycles and River-Level Variations
Published 2020-01-01“…The results revealed that the soil of the low-angle slope was the potentially low-expansive clay soil. The reduction in soil shear strength deriving from seasonal wet-dry cycles and river-level variations led to the instability and failure of the low-angle low-expansive soil slope, which triggered the collapses of the soil slope and lots of fractures in the piles of the bridge foundation. …”
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645
Effect of Zeolite Modification via Cationic Exchange Method on Mechanical, Thermal, and Morphological Properties of Ethylene Vinyl Acetate/Zeolite Composites
Published 2013-01-01“…EVA filled with organozeolite showed better tensile properties compared to EVA filled with unmodified zeolite, which might be an indication of enhanced dispersion of organophilic clay in the composites. Meanwhile, morphological study using SEM revealed the fibrillation effect of organozeolite. …”
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646
Effect of deep mixed column pattern on the performance of basal reinforced embankment resting on soft soil
Published 2025-03-01“…Various column patterns, including Square Group Columns (SGC), Longitudinal Tangent Wall (LTW), Transverse Tangent Wall (TTW), and Tangent Grid (TG), were evaluated for their response to stress-settlement, the heaving of the soft clay, and the lateral deformation of the embankment slope. …”
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647
Compatibilizer Polarity Parameters as Tools for Predicting Organoclay Dispersion in Polyolefin Nanocomposites
Published 2019-01-01“…The analysis used published data on nanocomposite samples combining clay nanoparticles, polyolefins, and various compatibilizing agents. …”
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648
Effects of Kaolin Surface Treatments on the Thermomechanical Properties and on the Degradation of Polypropylene
Published 2012-01-01“…The XRD results showed that the peak at the d-value of 10.7 Å increases in urea/kaolin complex, but the treatment with the ammonium salt caused the return to the initial state of the clay. FTIR results showed the appearance of new bands characteristic of the interactions between urea and kaolinite and the alkylammonium and kaolinite. …”
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649
Effect of High Temperature (600°C) on Mechanical Properties, Mineral Composition, and Microfracture Characteristics of Sandstone
Published 2020-01-01“…The results show the following. (1) There is no significant change in the tensile strength and fracture toughness of Sichuan sandstone treated at 600°C. (2) The brittleness of Sichuan sandstone decreases and the ductility increases after high-temperature treatment. (3) The unstable fracture toughness value Kun obtained by the double-K model (DKFM) is significantly larger than the apparent fracture toughness value Kif. (4) After treatment at 600°C, the clay minerals in the sandstone changed significantly. …”
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650
Physicochemical Properties of Bottom Sediments in Maruba Dam Reservoir, Machakos, Kenya
Published 2022-01-01“…The results of the study revealed that the bottom sediments were predominantly clay (56%). The mean pH value of the sediments was 6.63, which was found to be slightly acidic. …”
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651
The Use of Agricultural Waste Straw to Enhance Loess Shearing Behaviour: An Experimental Investigation
Published 2020-01-01“…Comparison with Jingyang loess and Delhi silt of similar relative fraction of silt to clay, sheared under the reduced triaxial compression (RTC) stress path and the reduced triaxial extension (RTE) stress paths, respectively, was conducted, with emphasis on strength uniqueness and critical state behaviour, to shed light on the effect of waste straw inclusions. …”
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652
Modelling Groundwater Flow and Contaminant Migration in Heterogeneous Fractured Media at a Municipal Solid Waste Landfill in Nanjing Lishui, China
Published 2022-01-01“…The strata of the landfill site are clay-cobble gravel, strongly and moderately weathered breccia, with obvious anisotropy and significant differences in rock mass permeability. …”
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653
Study on Effects of External Water Amount on Organic Intercalation of Montmorillonite and Its Mechanism
Published 2019-01-01“…As an important clay mineral, montmorillonite (MMT) plays a pivotal role in various fields. …”
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654
Study on the Calculation Method of the Diffusion Range of Grouting Slurry for a High-speed Railway Ballastless Track Subgrade
Published 2021-01-01“…In this paper, the diffusion formula of grouting slurry can be used in the theoretical study of clay grouting, and it can be used as a reference for practical engineering.…”
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655
Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China
Published 2013-01-01“…The high GR sandstone reservoir is mainly and directly caused by abnormally high uranium enrichment, but not the tuff, feldspar or clay mineral. Affected by formation’s high water sensitivity and poor borehole quality, the conventional logs can not recognize reservoir and evaluate the physical property of reservoirs. …”
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656
Utilization of Bathymetry Data and Backscatter in Geohazard Identification Process at Drilling Stage
Published 2025-01-01“…The sediment distribution showed a predominance of soft-textured clay. Using the weighting combined with the slope value and the presence of geohazard potential features, it is recommended that the jack-up rig enter through the Northeast-East side of the platform to improve operational safety and reduce potential accidents such as exposed pipelines and subsea cables and clusters of seabed scars.…”
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657
Relationship Between Thermal Conductivity, Mineral Composition and Major Element Composition in Rocks from Central and South Germany
Published 2025-01-01“…Higher quartz and SiO<sub>2</sub> contents generally lead to increased thermal conductivity, while aluminum silicates, common in clay minerals, correlate with lower conductivity. …”
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658
The Effect of Interaction between Nanofillers and Epoxy on Mechanical and Thermal Properties of Nanocomposites: Theoretical Prediction and Experimental Analysis
Published 2019-01-01“…In this paper, we first investigated interaction between carbon nanotube (CNT) and montmorillonite clay (MMT) absorbing on epoxy surface in a theoretical study based on the density functional theory (DFT) calculations. …”
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659
Sugarcane Yield Response to Furrow-Applied Organic Amendments on Sand Soils
Published 2015-01-01“…These soils have very low water and nutrient-holding capacities because of the low content of organic matter, silt, and clay. Because of high costs associated with broadcast application, this field study was conducted to determine sugarcane yield response to furrow application of two organic amendments on sand soils. …”
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660
Comparative study of thermal performance indicators of five hollow bricks configurations
Published 2025-01-01“…In order to enhance the thermal performance of red clay bricks, the present study evaluates several design approaches. …”
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