SMART FORMWORK AND FABRICATION

Abstract

This comparative experimental study evaluates the efficiency of using 3D printed formwork for concrete by conducting pull out tests. The study utilizes three types of 3D printed polymer bars - Horizontally printed, Vertically printed, and Vertically printed with a 5 degrees inclination. The research investigates the effectiveness of using release agents such as oil and Vaseline, as well as a control, to ease the removal of formwork. The study aims to determine the most efficient printing orientation for 3D printed formwork and to compare the use of different release agents. Pull out tests were conducted to evaluate the bond strength between the concrete and the 3D printed formwork. It was determined that oil and vaseline agents helped to reduce the tensile strength and frictional force greatly when compared to the control. The Inclined printed polymer bar was found to have the smoothest rate of pullout without any residual forces acting on it. The findings of the study will be useful for the construction industry to understand the feasibility and efficiency of using 3D printed formwork for concrete, so as to adopt this method of construction in the future.