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Showing 1 to 20 of 1112 for “"ash"”.
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Manufacturing of synthetic soda ash
… was to study the manufacturing of synthetic soda ash (sodium carbonate, Na2CO3) on an industrial scale. Currently all Soda ash that is used in South Africa for manufacturing glass is imported at a high cost, and the company Nampak Wiegand Glass (South Africa) is investigating the possibility to …
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Impacts of introduced crayfish on Ash Meadows aquatic communities: Ash Meadows National Wildlife Refuge, Nevada
… found 90 miles northwest of Las Vegas, Nevada in Ash Meadows National Wildlife Refuge. This area is threatened by numerous non-native, introduced species, most notably the Red Swamp Crayfish (Procambarus clarkii). The interactions are of concern to the Refuge because of the presence of the …
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Soil stabilization utilising wastepaper sludge ash
… Such materials including Wastepaper Sludge Ash (WSA), can be used to modify certain engineering properties of soils for specific uses to conserve non-renewable natural resources.<br/><br/>In lime-stabilization of sulfate-bearing clay soils, there has been increasing concern over the damage …
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An experimental study of fly ash
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1946
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Dynamics of ash eruptions at Vesuvius
In the recent years, continuous ash emission activity, related to mid-low intensity, long lasting eruptions, has been increasingly described to occur at different volcanoes worldwide. Focusing on this type of deposits, a retrospective analysis of the stratigraphic successions at Vesuvius revealed …
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Extruded Cellular Fly Ash Construction Materials
Bulk densities and crushing strengths of honeycomb samples consolidated by sintering and by autoclaving were studied as a function of their respective compositions and processing conditions. Typical bulk densities, crushing strengths, and SDR obtained were 1.13 g/cm$\sp3,$ 97 MPa (14,100 psi), and …
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Investigation of green foamed concrete incorporating palm oil fuel ash and eggshell ash as partial cement replacement
… 1800 kg/m3 density incorporating Palm Oil Fuel Ash (POFA) ranging from 20% to 35% and Eggshell Ash (ESA) from 5% to 15% as partial cement replacement. The effect of partial replacement on the workability was determined by J-ring test, mechanical properties such as, compressive and tensile …
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Investigations of ash layer characteristics and ash distribution in a diesel particulate filter using novel lubricant additive tracers
… DPF slowly accumulates incombustible material or ash, mostly from the metallic additives present in the engine lubricant. This build up of accumulated ash leads to an increase in flow restriction and therefore an increase in pressure drop along the DPF. The increased pressure drop negatively …
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The effect of fly ash on clay
… studies to determine the effect of mixing fly ash with regional swelling of clayey soils indicated these mixtures were superior in certain engineering properties. Mixtures of clay soil, and fly ash at 10, 20, 30, and 40 percent exhibited reduced plasticity and swelling characteristics while the …
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The Effective Viscosity of Ash-Laden Flows
… mechanism of these debris flows. Vegetative ash on the hillslope becomes entrained in the flow, along with other fine-grained sediment and increases the effective viscosity of the flow. The increase in effective viscosity decreases the settling velocity of the sediment within the flow, which …
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The Effective Viscosity of Ash-Laden Flows
… mechanism of these debris flows. Vegetative ash on the hillslope becomes entrained in the flow, along with other fine-grained sediment and increases the effective viscosity of the flow. The increase in effective viscosity decreases the settling velocity of the sediment within the flow, which …
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Evaluating shrinkage of fly ash - slag geopolymers
… a user-friendly geopolymer made with Class F fly ash, slag, potassium silicate, and potassium hydroxide. Slag used was constant at 5% of the total mass of the mix. The SiO2 to Al2O3 ratio was kept constant at 3.6, the K2O to SiO2 ratio varied between 0.9 - 2.4 for molarity variations between 4 to …
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Microchemical characterization of ash from fuel production
Millions of tons of ash and slag are produced each year as a result of energy production. This study looks at the mineralogy and textures in the ash resulting from the gasification of a 25% Passaic Valley sewage sludge, 75% Pittsburgh #8 coal slurry in a Texaco gasification facility and at ash …
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Physical, mechanical and durability properties of sugarcane ash enhanced compressed earth blocks stabilized with fly ash and lime powder
… of concrete manufacturing. Sugarcane bagasse ash (SCBA) is an industrial waste material obtained from sugar milling industry that can be used as pozzolanic material for the development of greenbricks. In this research, the application of various waste materials and the effects of fly ash and …
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A geochemical analysis of municipal solid waste ash
… municipal solid waste (MSW) bottom and fly ash from one facility showed most elements enriched over average soil abundances. Eleven minerals were identified using powder X-ray diffraction (XRD). Standard additions using XRD gave the following weight % minerals (±2σ): gypsum, 1.8 ± 1.9; …
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Hydration and air entrainment of fly ash concrete
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Setting and nanostructure of slag-fly ash binders
Slag fly ash binders (SFB) are room temperature hardening binders that have high strength, reasonable setting time, and lower carbon footprint when compared to ordinary Portland cement (OPC). The precursors for SFB are industrial byproducts, namely slag and fly ash. The inexpensive nature of the …
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