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3D printing of cement composites

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Gibbons, Gregory John, 1970-, Williams, Reuben, Purnell, Phil and Farahi, Elham. (2010) 3D printing of cement composites. Advances in Applied Ceramics, Vol.109 (No.5). pp. 287-290. ISSN 1743-6761

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Official URL: http://dx.doi.org/10.1179/174367509X12472364600878

Abstract

The aims of this study were to investigate the feasibility of generating 3D structures directly in rapid-hardening Portland cement (RHPC) using 3D Printing (3DP) technology. 3DP is a Additive Layer Manufacturing (ALM) process that generates parts directly from CAD in a layer-wise manner. 3D structures were successfully printed using a polyvinylalcohol: RHPC ratio of 3:97 w/w, with print resolutions of better than 1mm. The test components demonstrated the manufacture of features, including off-axis holes, overhangs / undercuts etc that would not be manufacturable using simple mould tools. Samples hardened by 1 day post-build immersion in water at RT offered Modulus of Rupture (MOR) values of up to 0.8±0.1MPa, and, after 26 days immersion in water at RT, offered MOR values of 2.2±0.2MPa, similar to bassanite-based materials more typically used in 3DP (1-3 MPa). Post-curing by water immersion restructured the structure, removing the layering typical of ALM processes, and infilling porosity.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology T Technology > TS Manufactures
Divisions:	Faculty of Science > Engineering Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH):	Portland cement, Three-dimensional printing
Journal or Publication Title:	Advances in Applied Ceramics
Publisher:	Maney Publishing
ISSN:	1743-6761
Date:	May 2010
Volume:	Vol.109
Number:	No.5
Number of Pages:	4
Page Range:	pp. 287-290
Identification Number:	10.1179/174367509X12472364600878
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	GR/T01518/01 (EPSRC)
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URI:	http://wrap.warwick.ac.uk/id/eprint/4465