Optimization of lime content for fly ash

Sivapullaiah, P. V. ; Prashanth, J. P. ; Sridharan , A. (1995) Optimization of lime content for fly ash Journal of Testing and Evaluation, 23 (3). pp. 222-227. ISSN 0090-3973

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Related URL: http://dx.doi.org/10.1520/JTE10414J


Abundant quantities of fly ash have been produced by thermal power plants situated all over the world. Many applications of fly ash depend upon its pozzolanic reactivity. This reactivity depends upon many factors, including lime content. Many fly ashes show marked improvement with the addition of lime. However, for every fly ash, there is an optimum lime content for its maximum reactivity. There is no well-established simple test to determine the optimum lime content. In this paper an attempt is made to use a simple physical and physico chemical test to determine the optimum lime content. The principle behind the use of a pH test, liquid limit test, and free swell index test to determine the optimum lime content has been explained. All the methods predict nearly the same optimum lime content and correlate well with that determined by the strength test.

Item Type:Article
Source:Copyright of this article belongs to ASTM International.
Keywords:Calcium Silicate Hydrate; Free Swell Index; Fly Ash; Liquid Limit; Optimization; Pozzolanic Reactivity; PH; Unconfined Compressive Strength
ID Code:84597
Deposited On:27 Feb 2012 03:50
Last Modified:27 Feb 2012 03:50

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