A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of size fractions of ponded ash on its pozzolanic activity
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.
Influence of size fractions of ponded ash on its pozzolanic activity
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.
Influence of size fractions of ponded ash on its pozzolanic activity
Ranganath, R.V. (author) / Bhattacharjee, B. (author) / Krishnamoorthy, S. (author)
Cement and Concrete Research ; 28 ; 749-761
1998
13 Seiten, 20 Quellen
Article (Journal)
English
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