Interface Behavior and Interface Tensile Strength of a Hardened Concrete Mixture with a Coarse Aggregate for Additive Manufacturing

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dc.contributor.authorVespalec, Arnoštcs
dc.contributor.authorNOVÁK, JOSEFcs
dc.contributor.authorKohoutková, Alenacs
dc.contributor.authorVosynek, Petrcs
dc.contributor.authorPodroužek, Jancs
dc.contributor.authorŠkaroupka, Davidcs
dc.contributor.authorZikmund, Tomášcs
dc.contributor.authorKaiser, Jozefcs
dc.contributor.authorPaloušek, Davidcs
dc.coverage.issue22cs
dc.coverage.volume13cs
dc.date.issued2020-11-15cs
dc.description.abstract3D concrete printing technology (3DCP) is a relatively new technology that was first established in the 1990s. The main weakness of the technology is the interface strength between the extruded layers, which are deposited at different time intervals. Consequently, the interface strength is assumed to vary in relation to the time of concrete casting. The proposed experimental study investigated the behavior of a hardened concrete mixture containing coarse aggregates that were up to 8 mm in size, which is rather unusual for 3DCP technology. The resulting direct tensile strength at the layer interface was investigated for various time intervals of deposition from the initial mixing of concrete components. To better understand the material behavior at the layer interface area, computed tomography (CT) scanning was conducted, where the volumetric and area analysis enabled validation of the pore size and count distribution in accordance with the layer deposition process. The analyzed CT data related the macroscopic anisotropy and the resulting crack pattern to the temporal and spatial variability that is inherent to the additive manufacturing process at construction scales while providing additional insights into the porosity formation during the extrusion of the cementitious composite. The observed results contribute to previous investigations in this field by demonstrating the causal relationships, namely, how the interface strength development is determined by time, deposition process, and pore size distribution. Moreover, in regard to the printability of the proposed coarse aggregate mixture, the specific time interval is presented and its interplay with interface roughness and porosity is discussed.en
dc.formattextcs
dc.format.extent1-20cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2020, vol. 13, issue 22, p. 1-20.en
dc.identifier.doi10.3390/ma13225147cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0001-8415-4346cs
dc.identifier.orcid0000-0003-3873-650Xcs
dc.identifier.orcid0000-0003-0493-5922cs
dc.identifier.orcid0000-0001-7398-5080cs
dc.identifier.orcid0000-0003-2948-5198cs
dc.identifier.orcid0000-0002-7397-125Xcs
dc.identifier.orcid0000-0003-4668-8763cs
dc.identifier.other166165cs
dc.identifier.researcheridY-8758-2019cs
dc.identifier.researcheridG-3419-2012cs
dc.identifier.researcheridG-9491-2014cs
dc.identifier.researcheridD-6800-2012cs
dc.identifier.researcheridE-9044-2012cs
dc.identifier.scopus36609352200cs
dc.identifier.scopus25121877100cs
dc.identifier.scopus7402184758cs
dc.identifier.scopus37089205700cs
dc.identifier.urihttp://hdl.handle.net/11012/195748
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/13/22/5147/htmcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subject3DCPen
dc.subjectcementitious compositeen
dc.subjectconcrete testingen
dc.subjectconcrete depositionen
dc.subjectinterface behavioren
dc.subjectdigital concreteen
dc.subjectextrusion manufacturingen
dc.subjectcomputed tomographyen
dc.subjectconstruction-scale 3D printingen
dc.subjectlarge-scale additive manufacturingen
dc.subjectPortland cement concreteen
dc.subjectextrusion-based concrete printen
dc.titleInterface Behavior and Interface Tensile Strength of a Hardened Concrete Mixture with a Coarse Aggregate for Additive Manufacturingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-166165en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:44:13en
sync.item.modts2025.01.17 15:12:28en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav automatizace inženýrských úloh a informatikycs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. ÚK-odbor reverzního inženýrství a aditivních technologiícs
thesis.grantorVysoké učení technické v Brně. . Fakulta stavebnícs
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