| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Alternative Processes (Beyond the Beam)
|
| Presentation Title |
Portland 3D Printing of Portland Cement Pastes with Additions of Kaolin, Superplastificant, and Calcium Carbonate |
| Author(s) |
Luis A. Vergara, Henry A. Colorado |
| On-Site Speaker (Planned) |
Henry A. Colorado |
| Abstract Scope |
The main goal on this investigation is to develop inexpensive formulations of Portland cement pastes for additive manufacturing using the direct ink writing technique. Kaolin, superplastificant based on cellulose, and calcium carbonate additions were all used as additives and modifiiers of the printing quality. A total of 15 formulations were built, from which 3 were able to be used in the printing process when considering the shape stability and finishing of the printing parts. Cylindrical samples of 17mm in diameter and 26mm of height were built in order to be tested in compression tests. The microstructure was characterized with scanning electron microscopy and X-ray diffraction. Mass flow through the nozzle, density, and Weibull distribution graphs were also obtained. Results showed one formulation to be the best one, which was associated mainly to an optimal kaolin content as rheology regulator. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |