期刊
CEMENT & CONCRETE COMPOSITES
卷 79, 期 -, 页码 62-70出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2017.02.001
关键词
3D-printing; Fiber reinforcement; Portland cement paste; Flexural strength; Fiber alignment
First insights into a 3D-printed composite of Portland cement paste and reinforcing short fibers (carbon, glass and basalt fibers, 3-6 mm) are presented, resulting in novel materials that exhibit high flexural (up to 30 MPa) and compressive strength (up to 80 MPa). Alignment of the fibers, caused by the 3D-printing process is observed, opening up the possibility to use the print path direction as a means to control fiber orientation within the printed structures. Apart from completely dense cementitious bodies, hierarchically structured bodies, displaying precisely adjusted macroporosity, are presented, the latter exhibiting a unique combination of strength and materials efficiency. (C) 2017 Elsevier Ltd. All rights reserved.
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