Researchers at the University of Nevada in Reno are pioneering a project to 3D print modular concrete blocks designed for use in military applications, such as building bridges in combat zones. This initiative aims to create structures on-demand, utilizing a building method that resembles assembling Lego blocks.
Launched in early 2024, the project involves creating 3-foot-long blocks that can be easily assembled into bridges. Traditional experiments with 3D printing often rely on trial and error, but this research incorporates advanced numerical simulations alongside physical testing to ensure the reliability of the structures. This method allows the team to preemptively analyze how the bridges will perform under various conditions.
The research, led by Assistant Professor Floriana Petrone, seeks to offer the Army a robust framework for constructing necessary infrastructure in areas where conventional building materials may not be accessible. The modular design of the blocks means that they can be printed and assembled on-site, which is crucial during emergencies or military operations. Each piece connects with cables rather than requiring specialized equipment, allowing for easy setup and disassembly as needed.
In tests, the researchers successfully supported loads of up to 7,000 pounds using segments connected by tensioned cables. Their innovative approach, combining 3D printing with numerical modeling and segmental construction, is expected to advance the efficiency and adaptability of field-deployed infrastructure.
Collaboration with the U.S. Army Engineer Research and Development Center has been essential to this initiative, which is funded through June 2025. The researchers aim to create structures that not only function well in demanding environments but also meet stringent safety and durability standards.