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Fibre Reinforced Polymer (FRP) Stay In Place (SIP) formwork for structural concrete elements

   Faculty of Engineering and Informatics

About the Project

The concept of using FRP composites for structurally integrated stay-in-place (SIP) formwork for structural concrete elements maximizes the advantages of both FRP and concrete; not only can the high strength of FRP be utilized effectively, but also FRP profiles can serve as permanent formwork.

This system combines the advantages of rapid construction with the inherent durability of FRP composites, enabling economical and safer installations, superior durability in particular to atmospheric degradation, leading to reduced maintenance cost. Furthermore, the bottom FSIP eliminates the need for the installation of primary bottom reinforcement. The installation of FSIP form systems is different from the construction of conventional reinforced concrete elements.

The proposed project will investigate the feasibility of using FRP-SIP form in structural concrete elements, for example slabs or beams. Key aspects to be studied are optimisation of the shape of FRP SIP, most appropriate method of achieving bond between concrete and FRP SIP as well as other elements in the structures, for example beams or columns.

Funding Notes

This is a self-funded PhD project; applicants will be expected to pay their own fees and living costs and / or seek separate funding from student finance, charities or trusts. A bench fee of £5000 per year also applies in addition to tuition fees.


1. Keller T., Schaumann E., Vallée T. (2007). ‘‘Flexural behavior of a hybrid FRP…concrete sandwich bridge deck’’, Compos. Part A-Appl. 38 (3) 879–889.
2. Zuo X., Feng, P., Wang J., Wu Y., Feng Y. (2018). “FRP-Stay in place form .. beams/decks,” Compos. Structr., 192, 489-499.

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