Dataset of "Mixing- and Dual-Nozzle Concepts for Shotcrete 3D-Printing – Investigations on Material and Strand Homogeneity"

This dataset includes the data of the paper "Mixing- and Dual-Nozzle Concepts for Shotcrete 3D-Printing – Investigations on Material and Strand Homogeneity". Each dataset contains the same sample designation (e.g. D_5050_100_90) for the manufacturing setup and consists of the following components: Parameter Category Code Description Setup D Dual nozzle M Mixing nozzle R Reference Mixing Ratio 5050 50% white : 50% black material 6040 60% white : 40% black material Mixing Intensity /Process Parameters 15 sec / 60 sec Mixing duration (Reference samples) 30 rpm / 70 rpm Rotational speed (Mixing nozzle) 0 / 100 Distance of jet intersection (Dual nozzle) 25 / 90 Nozzle angle α (Dual nozzle) The file 'Printing_process_Fotos.zip' contains photographic documentation of all experimental setups used for specimen production with printing. The images provide a visual record of each nozzle configuration, including geometric arrangement and material flow conditions during the printing process. The file 'Grayscale_Scans.zip' includes all cross-sectional scans of the specimens in both original and processed formats. The original scan data are provided as PNG files, while the processed images used for quantitative grayscale evaluation are provided as TIF files. The 'Grayscale_Values.zip' file contains processed grayscale analysis data obtained from cross-sectional scans of the specimens. For each specimen, the horizontal scan lines correspond to defined vertical positions within the sample. The mean grayscale value is reported for every scan line. The 'Local density distribution.csv' file contains detailed measurements related to spatial density distribution for all specimens. It includes the widths of the three individual columns within each specimen and their corresponding lateral positions relative to the specimen center. Additionally, the dataset provides the measurements required for density determination, including dry weight, saturated weight, and weight under water, from which bulk density was calculated. Derived parameters such as mean global density and relative density variation are also included.