Pozzolanic Property of Natural and Synthetic Pozzolans: A Comparative Study

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Title: Pozzolanic Property of Natural and Synthetic Pozzolans: A Comparative Study

Author(s): S. Chatterji, Mario Collepardi, and Giacomo Moriconi

Publication: Special Publication

Volume: 79

Issue:

Appears on pages(s): 221-234

Keywords: calcium hydroxides; chemical analysis; compressive strength; cracking (fracturing);; portland pozzolan -- cements; pozzolans; silica.

Date: 5/1/1983

Abstract:
Three natural pozzolans, a fly ash, and a sample of silica fume have been characterized by means of chemical analysis and nitrogen adsorption. lanic activity i.e. the The pozzo-lime consuming capacity of each of these pozzolans has been evaluated by making portland cement - pozzolan paste and determining free calcium I : hydroxide contents after different intervals of hydration. Mechanical strengths of the above portland cement -pozzolan mixtures have also been determined. The results indicate why previous workers in this area have obtained discordant results.