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Effect of Quartz Content on Physical Parameters of Locally Developed Reactive Powder Concrete
The Nucleus, 2018Reactive powder concrete (RPC) belongs to a new category of cement based composites bearing high compressive strength and negligible permeability. The introduction of RPC opened new applications for engineers and researchers specially to be used in ...
L. A. Qureshi +3 more
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Dynamical properties of epoxy composites filled with quartz powder
Journal of Alloys and Compounds, 2000Abstract The dynamical mechanical properties of epoxy composites filled with different amounts of quartz powder were investigated. The loss tangent and the storage Young’s modulus were measured at frequencies between 5 and 323 Hz with a tension–compression device, from room temperature up to 460 K.
S.N Goyanes +4 more
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Determination of quartz in kaolins by x-ray powder diffractometry
Analytica Chimica Acta, 1994Abstract Depending upon their origin, naturally occuring kaolins contain various accessory minerals including micas, feldspars and quartz. These minerals may be partially removed, but rarely eliminated, by refining. When determining quartz by x-ray diffractometry, serious problems are encountered even with refined kaolins due to overlapping peaks ...
N.J. Elton, P.D. Salt, J.M. Adams
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The separation of quartz—dolomite powders using a triboelectric technique
Powder Technology, 1976Abstract The separation of mixtures of quartz and dolomite cannot easily be accomplished by conventional gravity techniques, due to the close similarity between their specific gravities. Froth flotation, although possible, is also difficult; the surface structure of the two compounds does not differ sufficiently for adsorption of conditioning agents ...
M.J. Pearse, M.I. Pope
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Environmental science and pollution research international, 2022
A. Rashad, D. Sadek, Mahmoud Gharieb
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A. Rashad, D. Sadek, Mahmoud Gharieb
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The disturbed layer on ground quartz powders of respirable size
British Journal of Applied Physics, 1963~l~~~~~~ M~~~~~~~~~ section In a recent paper (Bergman and Casswelll962) it was reported that the integrated intensity of the 1122 x-ray diffraction line decreases with particle size for samples produced by grinding or shattering. The authors state that this may be a result of the method of measurement.
J H Talbot, A A Bradley, E B Kempis
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Hydrogen generation by mechanochemical reaction of quartz powders in water
International Journal of Hydrogen Energy, 2011Abstract The present work focuses on the chemical reaction of water with quartz powders undergoing mechanical activation. The reaction produces gaseous hydrogen and is accompanied by a decrease of the water pH. The observed behavior is related to the chemical reactivity of the active sites generated at the surface of quartz powders by fracture and ...
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Environmental science and pollution research international, 2022
Agnieszka Chowaniec +2 more
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Agnieszka Chowaniec +2 more
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