Dynamic characterization of the layer-interface properties of 3D-printed concrete elements

In this study, we used a Modified Hopkinson bar and a hydro-pneumatic machine to characterize the behaviour of 3D-printed concrete elements under different stress rates, focusing on the interface behaviour between consecutive layers under different loading conditions and in various significant, dyna...

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Autores principales:	Rosanna Napolitano, Daniele Forni, Costantino Menna, Domenico Asprone, Ezio Cadoni
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	3D-printed concrete Mechanical properties Weak interfaces Dynamic behaviour Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/ff52fb9d0bd54f618256c420e2ca2a54
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id	oai:doaj.org-article:ff52fb9d0bd54f618256c420e2ca2a54
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spelling	oai:doaj.org-article:ff52fb9d0bd54f618256c420e2ca2a542021-11-20T05:06:25ZDynamic characterization of the layer-interface properties of 3D-printed concrete elements2214-509510.1016/j.cscm.2021.e00780https://doaj.org/article/ff52fb9d0bd54f618256c420e2ca2a542021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521002953https://doaj.org/toc/2214-5095In this study, we used a Modified Hopkinson bar and a hydro-pneumatic machine to characterize the behaviour of 3D-printed concrete elements under different stress rates, focusing on the interface behaviour between consecutive layers under different loading conditions and in various significant, dynamic regimes. The paper includes the results of dynamic tensile tests and dynamic shear-tests at different stress rates (10−4 – 200 GPa/s) on 3D-printed cementitious elements for waiting times of 0.30 min, 10 min and 30 min in comparison with cast concrete elements. Dynamic increase factors (DIFs) versus stress rate curves for tensile and shear strength are also discussed. The shear-strength DIFs rise with the stress rate by up to 1.57 times compared to the quasi-static conditions at a waiting time of 30 min. Meanwhile, tensile tests reveal appreciable stress rate-sensitive behaviour, with an increase in the tensile-strength DIF of up to 7.6 for a high stress rate and at a waiting time of 30 min.Rosanna NapolitanoDaniele ForniCostantino MennaDomenico AsproneEzio CadoniElsevierarticle3D-printed concreteMechanical propertiesWeak interfacesDynamic behaviourMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 15, Iss , Pp e00780- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	3D-printed concrete Mechanical properties Weak interfaces Dynamic behaviour Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	3D-printed concrete Mechanical properties Weak interfaces Dynamic behaviour Materials of engineering and construction. Mechanics of materials TA401-492 Rosanna Napolitano Daniele Forni Costantino Menna Domenico Asprone Ezio Cadoni Dynamic characterization of the layer-interface properties of 3D-printed concrete elements
description	In this study, we used a Modified Hopkinson bar and a hydro-pneumatic machine to characterize the behaviour of 3D-printed concrete elements under different stress rates, focusing on the interface behaviour between consecutive layers under different loading conditions and in various significant, dynamic regimes. The paper includes the results of dynamic tensile tests and dynamic shear-tests at different stress rates (10−4 – 200 GPa/s) on 3D-printed cementitious elements for waiting times of 0.30 min, 10 min and 30 min in comparison with cast concrete elements. Dynamic increase factors (DIFs) versus stress rate curves for tensile and shear strength are also discussed. The shear-strength DIFs rise with the stress rate by up to 1.57 times compared to the quasi-static conditions at a waiting time of 30 min. Meanwhile, tensile tests reveal appreciable stress rate-sensitive behaviour, with an increase in the tensile-strength DIF of up to 7.6 for a high stress rate and at a waiting time of 30 min.
format	article
author	Rosanna Napolitano Daniele Forni Costantino Menna Domenico Asprone Ezio Cadoni
author_facet	Rosanna Napolitano Daniele Forni Costantino Menna Domenico Asprone Ezio Cadoni
author_sort	Rosanna Napolitano
title	Dynamic characterization of the layer-interface properties of 3D-printed concrete elements
title_short	Dynamic characterization of the layer-interface properties of 3D-printed concrete elements
title_full	Dynamic characterization of the layer-interface properties of 3D-printed concrete elements
title_fullStr	Dynamic characterization of the layer-interface properties of 3D-printed concrete elements
title_full_unstemmed	Dynamic characterization of the layer-interface properties of 3D-printed concrete elements
title_sort	dynamic characterization of the layer-interface properties of 3d-printed concrete elements
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ff52fb9d0bd54f618256c420e2ca2a54
work_keys_str_mv	AT rosannanapolitano dynamiccharacterizationofthelayerinterfacepropertiesof3dprintedconcreteelements AT danieleforni dynamiccharacterizationofthelayerinterfacepropertiesof3dprintedconcreteelements AT costantinomenna dynamiccharacterizationofthelayerinterfacepropertiesof3dprintedconcreteelements AT domenicoasprone dynamiccharacterizationofthelayerinterfacepropertiesof3dprintedconcreteelements AT eziocadoni dynamiccharacterizationofthelayerinterfacepropertiesof3dprintedconcreteelements
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Dynamic characterization of the layer-interface properties of 3D-printed concrete elements

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