Evaluation of the Mechanical and Photocatalytic Properties of Tio2-Reinforced Cement-Based Material in Binder Jet 3d Printing

Abstract

The development of modern 3D printing technologies has created new avenues for more customized digital designs within the construction industry. In this context, the incorporation of nano- and micro-scale additives can have a significant impact on the performance of cement-based materials in 3D printing method. In particular, the use of TiO2 particles as reinforcing additives in cement-based materials has become more widespread. Therefore, this paper investigates the potential application of cement-based material containing TiO2 particles in binder jet 3D printing and the effect of differently sized TiO2 particles on the performance of printed specimens. It is found that TiO2 particles have an excellent filling effect that increases the density of the printed specimens and promotes the hydration process, thus improving the compressive strength of the specimens. In addition, larger TiO2 particles have a stronger filling and photocatalytic effect on the resulting specimens.

Keywords: Binder jet 3D printing, Cement-based material, TiO2 particle, Filling effect, compressive strength, Photocatalytic effect