Pan American Materials Congress: Materials for Infrastructure: Poster Session
Sponsored by: Third Pan American Materials Congress Organizing Committee
Program Organizers: Henry Colorado, Universidad de Antioquia; Oliverio Rodriguez, Centro de Investigacion en Química Aplicada
Tuesday 5:30 PM
February 28, 2017
Room: Poster Area
Location: Marriott Marquis Hotel
PAN-25: Calcium Aluminate Cements Under High Temperature Oxidation Environment: John Zapata1; Henry Colorado1; Maryory Gómez1; 1Universidad de Antioquia
In this research different formulations of calcium aluminate cements (CAC) have been exposed to high temperature oxidation environments. Cement paste samples were made at 0.3, 0.4 and 0.5 water to cement (W/C) ratios. Both the raw cement powders and their corresponding samples after hydration were characterized in their microstructure by scanning electron microscopy, X-ray diffraction, granulometry, x-ray fluorescence, density, and compression tests. Samples were exposed to 500 and 1000˚C in a furnace open to air.
PAN-26: Carbonation Study in Calcium Aluminate Cement Pastes: Jose Vanegas1; Henry Colorado1; John Zapata2; 1CCComposites Lab, Universidad de Antioquia (UdeA); 2GISI. Institución Universitaria de Envigado (IUE)
Carbonation reduces durability and stability of cements and concrete. Particularly in calcium aluminate cement absorption can be more acetated than in traditional cements and therefore this is a technical and open problem in this materials. On the other hand, carbonation can be used as a way to reduce the CO2 levels from the atmosphere by the absorption in solid materials. In this research different formulations of calcium aluminate cements (CAC) have been exposed to CO2 gas. Samples of cement paste were made at 0.3, 0.4 and 0.5 water to cement (W/C) ratios. Carbonation was carried out on samples in controlled environment under CO2 gas. All samples were characterized in their microstructure by scanning electron microscopy, X-ray diffraction, granulometry, density, and compression tests.