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Determination of Stone Powder's Roundness Indirectly by BET Method

Fang Kun-he

Abstract

In order to describe the stone particle's roundness quantitatively,an indirect determination of the stone particle's roundness by BET method was proposed. Its principle and method was introduced respectively.It is proved by two examples that the stone particle's roundness can be described indirectly by its fractal dimensions.The roundness of such particles as phosphorous, cement and silica fume, etc can be determined by this method.

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Key concepts: Roundness (object), Materials science, Particle (ecology), Fractal, Particle size, Cement, Composite material, Mathematics