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The purpose of this study is to demonstrate the potential of three-dimensional printing technology for the remanufacturing of end-of-life (EoL) composites. This technology will enable the rapid fabrication of environmentally sustainable structures with complex shapes and good mechanical properties. These three-dimensional printed objects will have several application fields, such as street furniture and urban renewal, thus promoting a circular economy model.

For this purpose, a low-cost liquid deposition modeling technology was used to extrude photo-curable and thermally curable composite inks, composed of an acrylate-based resin loaded with different amounts of mechanically recycled glass fiber reinforced composites (GFRCs). Rheological properties of the extruded inks and their printability window and the conversion of cured composites after an ultraviolet light (UV) assisted extrusion were investigated. In addition, tensile properties of composites remanufactured by this UV-assisted technology were studied.

A printability window was found for the three-dimensional printable GFRCs inks. The formulation of the composite printable inks was optimized to obtain high quality printed objects with a high content of recycled GFRCs. Tensile tests also showed promising mechanical properties for printed GFRCs obtained with this approach.

The novelty of this paper consists in the remanufacturing of GFRCs by the three-dimensional printing technology to promote the implementation of a circular economy. This study shows the feasibility of this approach, using mechanically recycled EoL GFRCs, composed of a thermoset polymer matrix, which cannot be melted as in case of thermoplastic-based composites. Objects with complex shapes were three-dimensional printed and presented here as a proof-of-concept.

In accordance with Latour, this paper aims to respond to the call for a “down-to-earth” post-learning organization approach to sustainability, which is critical of Senge’s conception of learning organization (LO).

“Gaia storytelling” is used to define a LO that is “down-to-earth”.

Gaia is understood through the notion of a critical zone, which foregrounds the local and differentiated terrestrial conditions in which life on Earth is embedded.

Gaia storytelling implies perceiving LO as a network of storytelling practices enacted and told by unique creative citizens. Such an organization sustains and grows through several entangled storytelling cycles that allow Gaia to shape learning.

The article distinguishes five different storytelling cycles as a way to explore how the Gaia theater cycle connects to other cycles. The four other cycles are: Gaia thinking, explorative, creative and Gaia truth-telling.

A Gaian LO is a new beginning for LO.