Effects of prining parameters on 3D printed concrete

• Main Author: Koh, Alvin Ngiap Hui
• Other Authors: Tan Ming Jen
• Format: Final Year Project
• Language: English
• Published: 2019
• Subjects: DRNTU::Engineering::Mechanical engineering
• Online Access: http://hdl.handle.net/10356/77516
• Institution: Nanyang Technological University

Functionally graded material usually comprises of two or more-phase material in a pre-determined profile. The varying physical property in the functionally graded material is tailored to perform its specific requirements. It enables the material to meet its functional requirements while using material resources effectively. Since 3D creates complex structure in an additive manner, using topological optimisation and proper coordination of the printing parameters, different material physical property can be deposited at different region to achieve functionally graded concrete material. The physical property of the material after extrusion is closely related to the extrusion flow rate and the travel speed of the nozzle. More materials can be deposited when high strength is required in a specific region of the structure and likewise, lesser material can be deposited when lesser strength is required. In this study, the effect of the printing parameter on the printed filament material property will be investigated. Material properties such as green strength and mechanical strength can be affected by varying the printing parameter such as flow rate and travel speed. The objective is to investigate the feasibility of printing topological optimised function graded concrete material.