Mechanical properties, durability performance and interlayer adhesion of 3DPC mixtures: A state-of-the-art review

摘要

In this study, the strength and durability performance of 3D printing concretemixtures (3DPC) were examined in terms of the materials used in their productionand printing process parameters (interlayer interval time, printingspeed, and nozzle shape). Due to the anisotropic nature of 3DPC, it was understoodthat the compressive strength depends on the loading direction. It wasemphasized that it is necessary to control the shrinkage behavior of 3DPC mixturesdue to the lack of formwork and the high dosage of binders. It wasreported that the interlayer adhesion of 3DPC is highly dependent on the interlayerinterval time and printing speed parameters. It was understood that nozzleshape and standoff distance affect the mechanical properties and surfaceroughness of 3DPC specimens, and this effect is more pronounced in mixtureswith high static yield stress values.