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Functional geopolymer composites for structural ceramic applications.
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2006-06-01
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Edition:Final report; June 2004-Apr. 2006.
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Abstract:The results of an experimental investigation on the behavior of milled and short-fiber
reinforced composite plates are presented in this paper. The target operating temperature for
the plates was 1300°C. The principal variables were the type and volume fraction of fibers
and the matrix composition. Three fiber types and five fiber contents ranging from 2.5 to 10
weight percent were evaluated. The density of the samples varied from 1500 to 2800 kg/m3.
For the matrix, the ratio between alumina and silica was varied from 1:1 to 5:1. The flexural
tensile strength, (modulus of rupture) varied from 10 to 95 MPa. The modulus of elasticity
varied from 5 to 60 GPa. There is a strong correlation between the unit weight and the
mechanical properties of strength and modulus. Load-deflection response in flexure, strength
and stiffness for the various mix formulations and their relation to unit weight are presented.
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