Title Permanent Formwork of PLA Filament utilizing 3D Printing Technology
Authors Jeong, Junhyeong ; Hyun, Jihun ; Jeong, Heesang ; Go, Huijae ; Lee, Juhee ; Ahn, Joseph
DOI https://dx.doi.org/10.6106/KJCEM.2021.22.1.081
Page pp.81-89
ISSN 2005-6095
Keywords 3D Printer; Permanent Formwork; PLA Filament; Compressive Strength
Abstract In recent years, the design of buildings is changing from formal to creative and freeform. Accordingly, the scale of construction technology is changing to architectural design and construction of irregular buildings. Using the FDM method, which is one of the 3D printing technologies, it is possible to manufacture various forms of irregular formwork inexpensively and quickly coMPared to the existing formwork, and it seems to be able to solve the manpower problem. Using a 3D printer, the PLA filament formwork is produced in the form of a cylinder and a rectangular cuboid, and the usability of the PLA filament formwork is confirmed by examining the compression strength test and the degree of deformation and reusability over 28 days of age. Different sizes of additional specimens are also conducted according to the size. As a result of the experiment, it was confirmed that the filament formwork itself has about 3~4MPa strength. As a result of reviewing data through existing linear studies and experiments, it is appropriate to use more than 60% infill, and it is advantageous in terms of strength. As a result of cutting and dismantling the filament formwork, the surface is very clean and there is no damage, so it can be reused.