Geopolymers for 3D Print (2023-08)¶

3D print of building materials has increasing popularity in the construction industry all around the world. However, geopolymer material, which stands out for its high temperature resistance and low CO2 emissions compared to concrete, is very rarely used for 3D printing. This work is focused on a composite material based on a geopolymer binder, which is suitable for 3D printing of building elements. The properties of the developed geopolymer composite and the parameters that influence them are described in detail. One of the most important properties of the geopolymer composite for 3D print is setting time and its influence possibilities. The optimal setting time of the developed geopolymer material was 50 minutes. This composite reached up to 70 MPa at room temperature and 35 MPa after exposure to temperature of 800°C.