Title: A Thermogravimetric Study of the Pozzolanic Reactions in Mixtures Containing Fluidized Catalytic Cracking Catalyst, Fly Ash, Cement and Water

Author(s): J. Paya, J. Monzo, M. V. Borrachero, M. Bonilla, and S. Velazquez

Publication: Symposium Paper

Volume: 221

Issue:

Appears on pages(s): 911-924

Keywords: cement paste; fly ash; pozzolan; pozzolanic activity; scanning electron microscopy; spent fluid cracking catalyst; thermogravimetry; waste material

DOI: 10.14359/13298

Date: 5/1/2004

Abstract:
Different proportions of fluidized catalytic cracking residue (FOR) and Fly Ash were mixed with cement and their pozzolanic activities were monitored by Thermogravimetric Analysis, as a function of time. Fixed lime contents were calculated to determine the relative pozzolani activities. While FOR reacts with lime at very early ages of hydration, Fly Ash reacts only at longer times. Thermal peaks due to the presence of calcium aluminate hydrate (CAH) and calcium aluminosilicate hydrate (CASH) occurred in many samples.