Filament winding fabrication of FRP reinforcement cages

Saverio Spadea, John Orr, Timothy Ibell, Antonio Nanni

Research output: Contribution to specialist publicationArticle


This project has made progress towards the development of a novel alternative reinforcement technique for concrete structures with complex geometries, which are difficult to reinforce with conventional steel. Fibre-reinforced polymers (FRP) are woven into geometrically appropriate reinforcement cages to provide the required strength exactly where it is needed. Automated fabrication of the reinforcement utilises a modification of the filament winding technique. Being extremely lightweight, the resulting wound-FRP (W-FRP) cages are well suited to automation of the construction process, as they can be delivered ready for casting in optimized concrete elements. This is a key advance in research progress towards achieving minimum embodied energy, optimised, concrete structures. Experimental tests conducted on full-size W-FRP reinforced concrete beams demonstrate the reliability of the solution proposed, showing a new frontier for sustainable and durable reinforced concrete structures.
Original languageEnglish
Pages40 - 47
Number of pages6
Specialist publicationConcrete Plant International
Publication statusPublished - 5 Oct 2017


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