Our rigidified arch tubes consist of several layers that are fused together with resin to form the final hardened arch tube. The primary layer is a braided carbon fiber fabric. Like woven materials, braided fibers are mechanically interlocked with one another. When functioning as a composite reinforcement, braid exhibits remarkable properties because it is highly efficient in distributing loads.
We combine the lightweight and flexible braided carbon fiber fabric with a protective bulk outer layer and additional proprietary layers, depending on structural requirements. The light, flexible compact assembly is then shipped to the construction site where the tubes are inflated, shaped to the required geometry and infused with resin.
After the resin sets, the hardened arches are placed in position on the bridge and filled with concrete.
The carbon fiber tubes provide several functions – they act as a form for the concrete, they act as reinforcement for the concrete and they protect the concrete from corrosion.
We facilitate a systematic approach to bridge construction that lowers the overall cost of bridge replacement by reducing construction time, the need for heavy equipment, transportation costs and labor costs. We are also half the carbon footprint of traditional bridge construction.