The Role of Temperature on Hydration of Binary System of Metakaolin/Portland Cement

Publisher: Trans Tech Publications

E-ISSN: 1662-9752|2016|851|51-56

ISSN: 0255-5476

Source: Materials Science Forum, Vol.2016, Iss.851, 2016-05, pp. : 51-56

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Abstract

The role of temperature of metakaolin/Portland cement binary system was studied by isothermal calorimetry. Sample with 50 % of metakaolin replacement were monitored at 30 °C, 40 °C, 50 °C and 60 °C. Structural and chemical characterization of hardened pastes was obtained by scanning electron and Raman microscopy. Paper deals with kinetics of main exothermal reactions during early hydration of the system. Activation energies were calculated for processes related to each exothermic peak. The nature of hydration products at different temperatures was revealed by microstructural studies.