Preprint Article Version 1 This version is not peer-reviewed

Material Design and Performance Evaluation of Foam Concrete for Digital Fabrication

Version 1 : Received: 26 June 2019 / Approved: 28 June 2019 / Online: 28 June 2019 (07:28:09 CEST)

A peer-reviewed article of this Preprint also exists.

Markin, V.; Nerella, V.N.; Schröfl, C.; Guseynova, G.; Mechtcherine, V. Material Design and Performance Evaluation of Foam Concrete for Digital Fabrication. Materials 2019, 12, 2433. Markin, V.; Nerella, V.N.; Schröfl, C.; Guseynova, G.; Mechtcherine, V. Material Design and Performance Evaluation of Foam Concrete for Digital Fabrication. Materials 2019, 12, 2433.

Journal reference: Materials 2019, 12, 2433
DOI: 10.3390/ma12152433

Abstract

3D-printing with foam concrete, which is known for its distinct physical and mechanical properties, has not yet been purposefully investigated. The article at hand presents a methodological approach for the mixture design of 3D-printable foam concretes and a systematic investigation of the potential application of this type of material in digital construction. Three different foam concrete compositions with water-to-binder ratios between 0.33 and 0.36 and having densities of 1100 to 1580 kg/m³ in the fresh state were produced with a pre-foaming technique using a protein-based foaming agent. Based on the fresh-state tests, including 3D-printing as such, an optimum composition was identified and its compressive and flexural strengths were characterised. The printable foam concrete showed compressive strength above 10 MPa and low thermal conductivity, which make it suitable for 3D-printing applications, while fulfilling both load-carrying and insulating functions.

Subject Areas

digital fabrication; 3D printing; foam concrete; mixture design; material testing

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