HYDRATION DEVELOPMENT EVALUATION OF NATURAL POZZOLAN – CALCIUM HYDROXIDE SYSTEMS (original) (raw)

Abstract

This research covers the characterization of four natural pozzolan materials with igneous origin. The pozzolanic activity index of natural pozzolan-calcium hydroxide systems was determined using the compressive strength of mortar cubes. The rate of the pozzolanic reaction was determined in pastes with the same mix design that was used to make the mortars, this was achieved measuring the changes in time in the Calcium Hydroxide concentration. This information can be used as a preliminary selection tool, to evaluate the pozzolanic potential of natural pozzolan quarries.

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