Archives of Acoustics, 4, 2, pp. 109-116, 1979

Acoustical investigations of the effect of additives on the elastic properties of raw kaolin*

Ewa Ryll-Nardzewska
Institute of Fundamental Technological Research Polish Academy of Sciences
Poland

Jan Ryll-Nardzewski
Institute of Fundamental Technological Research Polish Academy of Sciences
Poland

Andrzej Kulik
Institute of Fundamental Technological Research Polish Academy of Sciences
Poland

Henryk Pieczarowski
Institute of Glass and Ceramics, Pruszków Branch
Poland

To improve the mechanical strength of ceramic bodies various modifying agents are added in the raw state. The effect of the modifiers on the elastic prop¬erties of kaolin samples in the raw state and after firing was studied by acoustical methods : a resonance one and a pulse one. The results of the Young's modulus measurements obtained by the acoustical methods agree with the results obtained by other methods. The resonance methods have been found to be applicable for the examination of raw ceramic materials.
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