Investigation of Geopolymer as a Sustainable Alternative Binder for 3D Concrete Printing

3D concrete printing (3DCP) is an emerging additive construction process to fabricate complex concrete structures without expensive formworks. There are two main challenges including (1) high ordinary Portland cement content in the typical printable concretes and (2) incorporation of conventional steel reinforcement into the 3D printing process. To address the sustainability and the structural applications of 3DCP, this doctoral research aims to develop a sustainable 3D printable geopolymer concrete for printing large-scale structural members. In addition, this study focuses to reinforce the printed geopolymer concretes by fibre reinforcement.