Calcium aluminate cements under high‐temperature compression tests

Abstract

This investigation is about the damage generated with high‐temperature compression tests in pure calcium aluminate cement pastes (CACP) with quartz. Two types of formulations of CACP were manufactured and later exposed to a compression of .3 MPa at 800°C for 16 h. Samples had a water to cement ratio (W/C) of .40. The formulations were characterized using laser granulometry, X‐ray fluorescence, X‐ray diffraction, thermogravimetric analysis, and scanning electron microscopy. The theta projection model parameters for creep were estimated using nonlinear regression fit methods. The activation energy, minimum time of creep, minimum creep rate, and other parameters were calculated. The creep micro‐mechanisms were established as well. The activation energy was obtained exclusively by creep for the formulations CACP 71–0 wt% and CACP 71–20 wt% of 2.98 kJ/mol and 7.04 kJ/mol, respectively.