Volume 23, Issue 3 (May 1995)

    Optimization of Lime Content for Fly Ash

    (Received 16 December 1993; accepted 10 October 1994)

    CODEN: JTEOAD

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    Abstract

    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.


    Author Information:

    Sivapullaiah, PV
    Senior scientific officer, research scholar, and professor, Indian Institute of Science, Bangalore,

    Prashanth, JP
    Senior scientific officer, research scholar, and professor, Indian Institute of Science, Bangalore,

    Sridharan, A
    Senior scientific officer, research scholar, and professor, Indian Institute of Science, Bangalore,


    Stock #: JTE10414J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10414J

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    Author
    Title Optimization of Lime Content for Fly Ash
    Symposium , 0000-00-00
    Committee C07