Digital fabrication with cement-based materials requires that specific attention is paid to rheological and mechanical material properties in both the fresh and hardened states. For the layered extrusion process, the cement-based material needs to satisfy the “printability” requirement, which may involve fracture resistance at very early ages to multiaxial stress states. This paper presents a methodology to identify the mechanical response under direct tensile and shear stresses as a function of time to determine the printability of the mix, with reference not only to the quality of the finishing but also to the speed of the printing process.

A Methodology to Assess Early Age Fracture Performance of 3D Printable Cementitious Mixes

K. S. Kompella;F. Lo Monte;M. Cucchi;A. Marcucci;L. Ferrara
2021

Abstract

Digital fabrication with cement-based materials requires that specific attention is paid to rheological and mechanical material properties in both the fresh and hardened states. For the layered extrusion process, the cement-based material needs to satisfy the “printability” requirement, which may involve fracture resistance at very early ages to multiaxial stress states. This paper presents a methodology to identify the mechanical response under direct tensile and shear stresses as a function of time to determine the printability of the mix, with reference not only to the quality of the finishing but also to the speed of the printing process.
Standards Development for Cement and Concrete for Use in Additive Construction
9780803177192
3D-printable cementitious composites, very early age, tensile constitutive behavior, shear behavior, testing methods, rheology, yield stress
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1199142
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