Speaker
Description
3D printing has emerged as a promising technique for the construction industry, in the context of Industry 4.0. Such a technique can enable the fabrication of complex concrete structures with improved efficiency and design freedom. Concrete mixtures for 3D printing exhibit unique rheological and mechanical properties. Several important properties, such as extrudability, printability, interlayer bonding, thixotropy, and buildability, play a key role in the quality, stability and construction speed of the printed structure. This study initially presents a comprehensive review of the reported concrete mix ratios and the effect of various mix constituents, based on published data on fresh and hardened properties. Subsequently, a series of concrete cubes and prisms are printed in house and tested for assessing their compressive and flexural strength. The ultimate loads are reported, and the effect of key parameters is evaluated through a sensitivity study.
| Topics | structural materials, structural engineering |
|---|---|
| Keywords | 3D printing, concrete, mechanical properties |
