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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/561

Title: Influence of size fraction of ponded ash on its pozzolanic activity
Authors: Ranganath, R V
Bhattacharjee, B
Krishnamoorthy, S
Keywords: ponded ash
lime-reactivity strength
Issue Date: 1998
Citation: Cement and Concrete Research, 28(5), 749–761
Abstract: The paper examines the role of different size fractions of ponded ash, characterised in terms of their physical nature and chemical composition, on the lime-reactivity strength of ash-lime-sand mortars. The paper also presents SEM and MIP characterisation of different size fractions. The results of the investigation show the strong influence of the fine particles on their physical properties and lime-reactivity strength of mortars. Ponded ash contains both reactive, small particles and non-reactive or poorly reactive large particles,due to which it loses its overall pozzolanicity. Its use as a pozzolan in cement concrete will only be possible if the non-reactive large sized particles are separated from it. The paper concludes that the practice of wet disposal of fly ash adopted mostly in India is detrimental to the pozzolanic activity of the ash.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/561
Appears in Collections:Civil Engineering

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