Experimental investigation of basic concrete properties for 3D printing technology

Abstract

The aim of this paper is an experimental investigation of fresh concrete properties of the mixture designed for 3D printing. Different mixtures with and without chemical additions (superplasticizer and hydration controller) with variable water-binder factor were considered. Density, time setting and workability flow/slump tests were determined in the fresh state. Ultimate capacities for compressive and flexural strength were analysed on cube and prism specimens at different age. The effect of chemical additions on properties was shown in the conclusion of this paper. The mixture with the waterbinder ratio 0.45 and amount of 13.8% of hydration controller had obtained the optimal properties for 3D printing.