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Materials 2018, 11(8), 1375; https://doi.org/10.3390/ma11081375

Developing and Testing of Strain-Hardening Cement-Based Composites (SHCC) in the Context of 3D-Printing

1
Institute of Technology, Shimizu Corporation, Tokyo 135-8530, Japan
2
Institute of Construction Materials, Technische Universität Dresden, 01602 Dresden, Germany
*
Author to whom correspondence should be addressed.
Received: 4 July 2018 / Revised: 26 July 2018 / Accepted: 1 August 2018 / Published: 7 August 2018
(This article belongs to the Section Advanced Composites)
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Abstract

Incorporating reinforcement into the practice of digital concrete construction, often called 3D-concrete-printing, is a prerequisite for wide-ranging, structural applications of this new technology. Strain-Hardening Cement-based Composites (SHCC) offer one possible solution to this challenge. In this work, printable SHCC were developed and tested. The composites could be extruded through a nozzle of a 3D-printer so that continuous filaments could be deposited, one upon the other, to build lab-scaled wall specimens without noticeable deformation of the bottom layers. The specimens extracted from the printed walls exhibited multiple fine cracks and pronounced strain-hardening characteristics under uniaxial tensile loading, even for fiber volume fractions as low as 1.0%. In fact, the strain-hardening characteristics of printed specimens were superior to those of mold-cast SHCC specimens. View Full-Text
Keywords: digital concrete construction; 3D-concrete-printing; SHCC; ECC; fiber-reinforced concrete digital concrete construction; 3D-concrete-printing; SHCC; ECC; fiber-reinforced concrete
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Ogura, H.; Nerella, V.N.; Mechtcherine, V. Developing and Testing of Strain-Hardening Cement-Based Composites (SHCC) in the Context of 3D-Printing. Materials 2018, 11, 1375.

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