Project 2.04: Thermoplastic Composites by 3D Printing and Automated Manufacturing to Extend the Life


Large-scale railroad bridge ballast retainer formwork at American Concrete Ind. plant in Veazie, Maine.

Large-scale railroad bridge ballast retainer formwork at American Concrete Ind. plant in Veazie, Maine.

3D printed form of at the Unistress Corp. precast concrete plant in Pittsfield, MA.

3D printed form of at the Unistress Corp. precast concrete plant in Pittsfield, MA.

3D printing of Railroad Ballast Retainer formwork

Concrete placement in 3D printed formwork

Worker prepares 3D printed latticework for concrete mixture placement

On-Site Installment

Workers in reflective vests and hard hats signal for the railroad ballast retainer to be lifted off of a train car
The railroad ballast retainer is set in place at the end of a railroad bridge
Worker used for scale inside the tub like shape of the railroad ballast retainers, the peak reaches the worker's shoulders

Completed Installation

An arial view of the completed railroad bridge with ballast retainer now covered in gravel and railroad track