Effects of Aggregate Size and Nozzle Diameter on Printability and Mechanical Properties of 3D Printed Ferronickel Slag-GGBFS Concrete.

(3) As the aggregate size increases, the compressive and flexural strengths of the 3D printed ferronickel slag–GGBFS concrete show an increasing trend, indicating that larger aggregate size contributes to improved overall structural load-bearing capacity.

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As the average aggregate size increased, the flowability of the 3D printed ferronickel slag–GGBFS concrete exhibited a clear upward trend, while the slump showed a decreasing trend.

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