Journal
MATERIALS
Volume 11, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/ma11081375
Keywords
digital concrete construction; 3D-concrete-printing; SHCC; ECC; fiber-reinforced concrete
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Funding
- Shimizu Corporation (Tokyo, Japan)
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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.
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