Optimization of additively manufactured graphene-enhanced geopolymer concrete

Sinha, Priyanshu; Soe, Shwe; Nounu, Ghassan; Jorgensen, Tavs; Qureshi, Tanvir; Ball, Richard

Abstract

This project will develop high-performance graphene-enhanced geopolymer concrete optimized for additive manufacturing applications. Mix designs employing the additives GGBS, Fly ash, and Metakaolin will be combined with a graphene nano additive to enhance the strength and electrical properties. The activation process will be carried out using sodium hydroxide with a concentration of 10 Molarity, and components of each geopolymer formulation will be combined using a Hobart mixer. Test specimens will be manufactured via an extrusion-based additive manufacturing process utilizing a Universal Robots UR10e Collaborative Robot Arm attached to the duct of the auger concrete pump. Key challenges will involve the optimization of a suitable desired open time, fresh state properties, buildability, and shape retention. Mechanical properties of the printed components including compressive and flexural strength will be measured, and in addition, the electrical properties (bulk resistance, conductivity, dielectric permittivity) will be evaluated using impedance spectroscopy to evaluate the 3D-printed geopolymer concrete.

• Presentation Conference Type: Poster
• Conference Name: ICT 52nd Convention
• Start Date: Apr 11, 2024
• End Date: Apr 11, 2024
• Deposit Date: Apr 12, 2024
• Publicly Available Date: Apr 12, 2024
• Keywords: 3D concrete, Geo-polymerization, Sustainability, Additive Manufacturing, Graphene
• Public URL: https://uwe-repository.worktribe.com/output/11891065