Architectural

Development of Stay-in-Place Formwork Using GFRP Reinforced UHPC Elements

---

Abstract

In this study, stay-in-place (SIP) formwork for structural elements subjected to aggressive environment, such as bridge columns and columns in parking structures subjected to deicing salt are developed by using prefabricated ultra-high performance concrete (UHPC) elements reinforced with embedded glass fiber reinforced polymers (GFRP) grids. Mechanical properties of UHPC and GFRP grids were determined experimentally. Novel designs of SIP formwork systems were presented and evaluated by numerical simulation in terms of strain and stress distributions and lateral deformation under gravity load and internal pressure due to concrete casting. Concrete damage plasticity model is incorporated to consider the post-cracking behavior in using the finite element analysis software ABAQUS. The proposed FRP-UHPC composite is shown to be promising for the development of lightweight, high performance, and cost-effective SIP formwork system for column elements.

Keywords: accelerated construction, ultra-high performance concrete (UHPC), glass fiber reinforced polymer (GFRP) grids, stay-in-place (SIP) formwork, column

How to Cite:

Meng, W. & Khayat, K. H., (2016) “Development of Stay-in-Place Formwork Using GFRP Reinforced UHPC Elements”, International Interactive Symposium on Ultra-High Performance Concrete 1(1). doi: https://doi.org/10.21838/uhpc.2016.28