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Showing 1 to 20 of 37 for “"Kaolin Clay"”.
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An investigation of the radiation polymerization of methyl methacrylate-kaolin clay composites
… a 50-50 weight mixture methyl methacrylate (MMA) kaolin clay system. The effect of dose rate (7.35 - 24.9 rads per second), temperature (25 to 75ºC) and total dose on the percentage conversion of monomer to polymer was studied. The rate of formation of polymer at 25ºC in the composite system was …
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Synthesis and Characterization of Stable Kaolin Intercalation Complexes: A Possible Means of Valorization and Diversification of Kaolin Clay Minerals
Made available in DSpace on 2014-12-14T07:10:51Z (GMT). No. of bitstreams: 1 7804151.pdf: 7576632 bytes, checksum: d05a16ed5790b1ace993b54107500329 (MD5) Previous issue date: 1977
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Effect of Kaolin clay, Planting Dates, and Color Mulches on Summer Tomato Production in the Eastern Shore of Virginia
… of reflective mulches, and the application of kaolin clay particle films. Field trials spanning two seasons were carried out, comparing different planting dates in May, June, and July, as well as the use of reflective, black, and white plastic mulches, both with and without foliar kaolin …
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Synthesis and potential application of Fe3+/Mn2+ bimetal and hexadecyltrimethylammonium bromide (HDTMA-Br) modified clayey soils for arsenic removal in groundwater
… in Limpopo Province and further synthesize clay based adsorbents for arsenic removal using Fe3+ and Mn2+ oxides and hexadecylammonium bromide (HDTMA-Br) cationic surfactant as modifying agents. The first section of the work presented the hydrogeochemical characteristics of groundwater in the …
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THE ANTAGONISTIC AND MUTUALISTIC PLANT-INSECT INTERACTIONS OF PITCHER’S THISTLE (CIRSIUM PITCHERI [TORR. EX EAT.] TORR. & A. GRAY, ASTERACEAE), A FEDERALLY THREATENED GREAT LAKES DUNE AND COBBLE SHORE ENDEMIC PLANT
… WP, in reducing impacts on C. pitcheri. The kaolin clay is mixed in water and then applied to the plant create a protective film after drying. I first needed to confirm that kaolin clay did not negatively impact pollinator visits, which are important for seed set. To test this, I performed …
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The rheological characterisation of non- Newtonian slurries using a novel balanced beam tube viscometer
… Comparison with the rotary type viscometer. Kaolin clay and uranium tailings slimes slurries of different particle size range and concentration have been successfully characterised by yield- pseudoplastic rheologies using the BBTV. The BBTV is in fact a miniature pipeline and it has been …
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Rate-Dependent Behavior of Clay
… two-surface plasticity constitutive model for clays based on the critical-state soil mechanics. The model reproduces the mechanical response of clays under multi-axial loading conditions and predicts both drained and undrained behaviors at small and large strains. Model parameter values are …
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The impact of sample scale on the compressibility parameters of saturated fine-grained soils
… tests on fully saturated fine-grained soil (i.e. kaolin clay) at various sample scales, which were subsequently explored analytically using the finite element software PLAXIS 2D. This type of clay was chosen as it is easily sourced and well known. A Scanning Electron Microscope (SEM) and X-Ray …
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Direct shear and direct simple shear tests: a comparative study of the strength parameters and their dependence on moisture and fines contents
… shear tests were undertaken on Klipheuwel sand, Kaolin clay and composite of the sand and clay using universal shear device. The soils were mixed with water in percentages of 5,10, 15, 20 and 25%, and the composite with clay percentages of 10, 25, 50 and 75%, to investigate the impact of water …
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Evaluating the capabilities of some constitutive models in reproducing the experimental behaviour of stiff clay subjected to tunnelling stress paths
… the intrinsic experimental behaviour of stiff clay when subjected to tunnelling-induced stress paths. Relevant stress paths have been determined from 2D and 3D finite element analysis using PLAXIS. Reconstituted Speswhite Kaolin clay specimens have been prepared from slurry, their properties …
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Shear strength behaviour of sugarcane bagasse reinforced soils
… added to Klipheuwel sand, Cape Flats sand and Kaolin Clay at both dry and moist conditions. In addition, durability studies involving 12 cycles of wetting and drying, and soaking for a period of 14 days were constituted.
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The Effect of Clay Content and Iron Oxyhydroxide Coatings on the Dielectric Properties of Quartz Sand
… of pure quartz sand (Control), quartz sand/kaolin clay mixtures and ferric oxyhydroxide coated quartz sand. Results from the experiments show that the dielectric responses of quartz-clay and iron oxyhydroxide modified samples are not significantly different from the pure quartz Control. …
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An Experimental Study on Soil Water Characteristics and Hydraulic Conductivity of Compacted Soils
… and wetting conditions, with changes in the kaolin clay content.
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Additive manufacturing of non plastic porcelain material by direct writing and freeze casting.
… that it is not possible to use conventional clay based porcelain materials with a platelet shaped microstructure which inhibits freeze casting. In this thesis the development and characterisation of non plastic porcelain slurry, based on substitution of kaolin (clay) with a calcined clay …
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Investigation of Pore Pressures During High-Velocity Impact by a Free Fall Penetrometer
… surveys at Herschel Island, YT, Yakutat, AK, Clay Bank, VA, and Yorktown, VA. Additionally, test deployments in the laboratory were performed in kaolin clay. Data analysis was focused on pore pressure measurements during these deployments. Two major advancements regarding current data analysis …
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Engineering advanced adsorbent materials for CO₂ capture applications
… were synthesized from abundant and inexpensive kaolin clay. To enhance the adsorption capacity, the materials were then impregnated with aminopolymer and evaluated for CO<sub>2</sub> capture from air"--Abstract, page iv.</p>
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Turbulent fluid jet excavation in cohesive soil : with particular application to jet grouting
… using soil specimens manufactured from powdered kaolin clay, cement and water. Cement-soil ratios (CSR) of 2.5 to 7.5% were used to produce specimens with undrained shear strength (Su) ranging from 5 to 45 kPa. A period of at least 3 days was allowed for the specimen to cure in the test tank …
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The development of azadirachtin as a soil-applied, granular insecticide
… formulations based on sodium alginate, starch-kaolin and poly(e-caprolactone), and containing different neem seed extracts were successfully prepared. These granules exhibited differnces in the rate of azadirachtin release into water. Additives such as kaolin clay and rapeseed oil could be used …
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Turbulence In Low Energy Lacustrine Environments At The Sediment-Water Interface
… and resuspension tests of a mono-disperse kaolin clay and natural sediment cores obtained from various bottom and shore locations in one of the reservoirs. This testing showed the small bed stresses typical of the lacustrine bottom boundary layer were not sufficient to erode or resuspend …
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Characterization of amorphous silica and crystalline silica from rice husk ash on water filtration application
… mixed with the compositions of rice husk ash, kaolin clay, and wheat flour, used at 40:40:20 ratios by weight respectively. The fabrications of the ceramic membrane were conducted by using dry pressing. The samples then were dried in the oven at 60ᵒC for 1 hour followed by sintering at 1000ᵒC …
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