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Testing the Properties of Fiber-Reinforced Geopolymer 3D Printing Material

Testing the Properties of Fiber-Reinforced Geopolymer 3D Printing Material

Written by David

December 5, 2018

In a paper entitled “ Effect of Polypropylene Fibre Addition on Properties of Geopolymers Made by 3D Printing for Digital Construction ,” a group of researchers investigates the effect of polypropylene (PP) fibers on the fresh and hardened properties of 3D printed fiber-reinforced geopolymer mortars. One of the main limitations of extrusion-based concrete 3D printing techniques, the researchers point out, is the difficulty of incorporating conventional steel reinforcement. “As a possible solution, conventional steel bars might be partly or completely substituted by short-fibre reinforcement, thus minimizing or rendering unnecessary requirements for steel reinforcement with regard to mastering issues of cracking due to shrinkage or temperature changes and, in some cases, achieving particular load-bearing capacity and deformability,” they state. Another limitation is the limited range of printable concretes, they continue. Conventional OPC concrete is not suitable because of its setting characteristics, as well as its high energy consumption and emissions. […]

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