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Reactivity Of Silica From Rice Husk With Lime

James, J and Subbarao, M (1992) Reactivity Of Silica From Rice Husk With Lime. In: Canadian Ceramics Quarterly, 61 (2). pp. 121-127.

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Abstract

The paper correlates the reactivity of rice husk ash with its physicochemical properties such as crystallinity, surface area, microstructure, particle size distribution, porosity and solubility. These properties, in tum, are dependent on the time-temperature conditions under which the ash is prepared. It is found that the reactivity of the ash cannot be quantified by any one of these parameters alone, though they all indicate it qualitatively. Therefore, a method for quantifying this property was developed, by which the Reactivity Index is obtained. There is only a gradual change in the reactivity index of RHA with ashing temperature, as in many other properties, like surface area, porosity and total volume of gas absorbed by unit mass of the silica ash. This reactive index is found to be useful in determining the optimum ash/lime ratios required to give the best performance for RHA-lime composites.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Canadian Ceramic Soc.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 30 May 2011 09:40
Last Modified: 30 May 2011 09:40
URI: http://eprints.iisc.ernet.in/id/eprint/37589

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