Experimental study on time dependent behaviour of coarse aggregate concrete mixture for 3D construction printing

This experimental study analyses coarse aggregate-containing and coarse aggregate-free materials from the perspective of additive manufacturing. The primary objective is to identify, through a series of experiments, the fundamental equations that characterise material behaviour at early ages in order to formulate a digital material model. During the research, a previously unreported phenomenon, namely the contradictory development of Young's modulus and cohesion, was observed. In addition, the sensitivity of buildability to changes in material properties was discussed and demonstrated with a motivating example using a spatiotemporal simulation of 3Dprinted concrete.

Keywords

Buildability, 3D Construction Printing, Coarse aggregate concrete printing, Digital concrete, Early-age rheology, Large-scale additive manufacturing, Material model

Citation

Construction and building materials. 2023, vol. 376, issue 5, p. 1-12.
https://www.sciencedirect.com/science/article/pii/S0950061823007110?via%3Dihub

Document type

Peer-reviewed

Document version

Published version

Language of document

en

Document licence

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/