| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
O-37: Carbonation Behavior of Calcium Aluminate Cements with Additions of Silica |
| Author(s) |
John Zapata, Henry Colorado |
| On-Site Speaker (Planned) |
John Zapata |
| Abstract Scope |
In this research, different formulations of calcium aluminate cements (CAC) pastes with 51 and 71wt% Al2O3 were made at 0.4 water to cement ratio (W/C) with additions of 0, 10 and 20wt% silica. Both the raw cement powders and their corresponding samples after hydration were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), density and compression tests. Samples were exposed to 20°C in a furnace open to air, for 3, 4 and 7 days with a concentration of CO2 of 4% and relative humidity of 70%. The behavior of the constituent phases with the temperature was also studied through of thermal gravimetric analysis (TGA) and the corresponding derivative thermogravimetry (DTG). |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |