In this study, focusing on the quality control and the inspection for 3D printing used in construction, the extrudability and the buildability of cementitious printing materials were investigated. In particular, the unique test methods to evaluate these two qualities were invented and tested out, and the extrusion test and the lamination test by a real 3D printer were also performed concurrently. As the result, it turned out that the extrudability and the buildability of 3D printing materials can be generally evaluated by the test methods invented by authors.
