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The influence of particle size on the pozzolanic reactivity of quartz powder
Powder Technology, 1999Abstract Materials with cement-based matrices represent a class of materials notable for their wide and plentiful use. Up to the present, component reactivity was closely linked to the material's vitreous characteristics. The question we wanted to find an answer to was: is the pozzolanic reaction one which is specific to vitreous materials? To tackle
J.C. Benezet, A. Benhassaine
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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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Densification of quartz powder and reduction of conductivity at 700°C
Journal of Geophysical Research: Solid Earth, 1995We have measured axial strain, volumetric strain, and electrical conductivity during the densification at 700°C of ultra‐fine quartz powder (5–10 μm diameter) saturated with distilled water. Individual experiments were run at confining pressures ranging from 200 to 370 MPa and pore pressures of 30, 100, and 200 MPa. During the experiments, which lasted
David Lockner, Brian Evans
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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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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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Production of silica glass by vacuum sintering of quartz powder
Vacuum, 1963Abstract Production of a transparent silica glass ingot by a vacuum sintering of −60 mesh quartz powder 2.3–3 kg with an assembled vertical type graphite crucible in a specially designed vacuum furnace was investigated. Formation of bubbles in the silica glass ingot depended mainly on the thickness of the quartz powder layer.
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Vacuum sintering of quartz powder and phase transformation of quartz
Vacuum, 1962openaire +1 more source
Behaviour of Quartz Powder-Based Fibre-Reinforced Concrete
2023P. Kaviya, A. Sattainathan Sharma
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