Structural built-up of cement-based materials used for 3D-printing extrusion techniques

By A. Perrot, Damien Rangeard, A. Pierre. 2016

823 citations recorded by the source corpus.

Abstract Additive manufacturing and digital fabrication bring new horizons to concrete and cement-based material construction. 3D printing inspired construction techniques that have recently been developed at laboratory scale for cement-based materials. This study aims to investigate the role of the structural build-up properties of cement-based materials in such a layer by layer construction technique. As construction progresses, the cement-based materials become harder with time. The mechanical strength of the cement-based materials must be sufficient to sustain the weight of the layers subsequently deposited. It follows that the comparison of the mechanical strength, which evolves with time (i.e. structural build-up), with the loading due to layers subsequently deposited, can be expected to provide the optimal rate of layer by layer construction. A theoretical framework has been developed to propose a method of optimization of the building rate, which is experimentally validated in a layer-wise built column.

Subfields: Automotive Engineering, Biomedical Engineering, Building and Construction

View Paper: https://www.semanticscholar.org/paper/8f26c646d455dabcc13393e9bf17168a368d3ecc

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Citations in the corpus

3D printing using concrete extrusion: A roadmap for research (2018, background): “celerators injected prior to extrusion to speed up the hardening of lower layers such that they are capable of maintaining the progressively increasing load [12,26].”
Additive manufacturing in construction: A review on processes, applications, and digital planning methods (2019, background): “The failure of a concrete structure during printing cannot necessarily be predicted analytically as described in [23,37] since a possible loss of stability is not taken into account.”