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The objective of this study was evaluated the effect of heat treatment parameters on the pozzolanic activity of natural kaolin clays. The experimental design included three factors: kaolin type, temperature and time. Five types of Colombian kaolin clays were thermally treated from 400 to 1000 °C by 1, 2, and 3 hours. The raw materials and the products obtained were characterized by X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Differential Thermal / Thermo gravimetric Analysis (DTAJ TGA). The pozzolanic activity of thermally treated samples according to chemical and mechanical tests was investigated.

Análisis del proceso térmico de producción de una puzolana