The Effect of Printing Path on the Shear Behavior of 3D Printed Concrete Panels Under Diagonal Compression Test

Digital fabrication with concrete has been developing rapidly in the construction industry because of its advantages of rapid construction, no formwork, easy-to-shape work and labor cost savings. The design and programming of the printing paths for the printed elements is still not regulated with standard shapes as well as its specific design-to-fabrication procedure, and other constraints. Moreover, there is a lack in the literature on proper experimental characterization of 3D printed concrete elements subjected to shear loads. The present paper deals with an experimental study on the effect of printing path on the shear behavior of 3D printed concrete panels. In this regard, an experimental campaign based on diagonal compression tests was carried out on two square panels with different print paths adopted as infill. The infill paths differentiated in terms of periodic infill wave. The results showed that both shear stiffness and strength are affected by the type of inner geometry.