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Ceramics-Silikáty 59, (4) 326 - 330 (2015) |
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EFFECTIVE ELASTIC CONSTANTS OF PLAGIOCLASE FELDSPAR AGGREGATES IN DEPENDENCE OF THE ANORTHITE CONTENT - A CONCISE REVIEW
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Pabst Willi 1, Gregorová Eva 1, Rambaldi Elisa 2,
Bignozzi Maria Chiara 3
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1 Department of Glass and Ceramics, University of Chemistry and Technology, Prague (UCT Prague),
Technická 5, 166 28 Prague, Czech Republic
2 Centro Ceramico, via Martelli 26, 40138 Bologna, Italy
3 Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna,
via Terracini 28, Bologna, Italy
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Keywords: Albite, Oligoclase, Andesine, Labradorite, Bytownite, Anorthite, Young modulus (Tensile modulus), Poisson
ratio, Shear modulus, Bulk modulus (Compressive modulus), Elasticity, Geophysics, Seismology, Rock-forming minerals,
Wollastonite, Feldspar, Ceramic tiles, Ultrasonic velocity, Adiabatic elastic constants, Simulation (Density functional theory),
Impulsive stimulated light scattering, Review
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Recent work on the elastic constants of plagioclase feldspars is reviewed. Based on the 21 elastic constants (stiffnesses)
reported in the literature for triclinic plagioclase monocrystals of different composition, the effective elastic constants of
dense, single-phase, polycrystalline plagioclase aggregates with isotropic microstructure are calculated via standard VoigtReuss-Hill
averaging. Master curves show the good agreement of the constants obtained via the two approaches (experiment
and simulation) and recall the fact that values reported in the older literature have been underestimated. Fit relations are
given for the calculation of Young modulus, shear modulus, bulk modulus, Poisson ratio and density in dependence of the
composition. These fit relations may serve as handy tools for obtaining relevant input information for the calculation of
effective elastic constants of multiphase ceramics produced with Ca and Na containing raw materials. |
Record in: Scopus | Web of Science |
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