First Investigations on WAAM-Printed Adhesive Sockets for Reinforcement Connections

Lukas Ledderose; Harald Kloft

doi:10.52825/ocp.v7i.2788

Authors

Lukas Ledderose Technische Universität Braunschweig https://orcid.org/0000-0003-3243-0251
Harald Kloft Technische Universität Braunschweig

DOI:

https://doi.org/10.52825/ocp.v7i.2788

Keywords:

Additive Manufacturing Construction, WAAM, Concrete Components, Reinforcement, Injection Mortar

Abstract

Additive manufacturing (AM) is attracting increasing interest in the construction sector due to its potential for automation and its ability to produce complex components. The potential of AM, particularly in the free-form design of concrete components such as beams, columns and force flow-optimised nodes, depends largely on solutions for their reinforcement. As a suitable solution for reinforcement integration, robot-assisted additive wire and arc manufacturing (WAAM) combines a high degree of automation and geometric freedom with a high deposition rate and tensile strength.

In this study, the WAAM process is investigated using the example of welded connection elements for reinforcing bars, accompanied by centric tensile tests on representative WAAM specimens and pull-out tests on reinforcing bars bonded into different sockets with two different injection mortars. In comparison to this novel approach of connecting steel components with reinforcing bars by bonding sockets produced using WAAM, comparable connection methods such as bolting and welding of the reinforcing bars are investigated.

The possible applications of the connection technology presented range from steel inserts in connecting elements and brackets to the connection of segmented rebars in AM concrete components.

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First Investigations on WAAM-Printed Adhesive Sockets for Reinforcement Connections

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