The mechanical properties of 3D-printed mortars are determined in terms of their compressive and direct tensile bond strengths. To determine such properties using existing methods, a preliminary experiment was conducted. The compressive strength of the printed mortar was compared to mold-casted specimens and it was found that the compressive strength decreased by ~30%. Among the fabrication variables, an increase in nozzle height negatively influenced the direct tensile bond strength. For the same conditions and age, the direct tensile strength decreased by as much as 16-29% when the number of layers increased from 2 to 6. When the specimens were fabricated using a specially designed stainless steel frame and core drill, followed by extraction and the application of physical impact, the 28 days compressive strength of the specimen decreased by ~50%.
|Publication status||Published - 2019 Dec 1|
Bibliographical noteFunding Information:
This research was supported by the Urban Architecture Research Program funded by Ministry of Land, Infrastructure and Transport of the Republic of Korea [grant no. 17AUDP-B121595-02]
Funding: This research was supported by the Urban Architecture Research Program funded by Ministry of Land, Infrastructure and Transport of the Republic of Korea [grant no. 17AUDP-B121595-02].
© 2019 by the authors.
All Science Journal Classification (ASJC) codes
- Materials Science(all)