The Land Transport Authority of Singapore is advancing an infrastructure project that employs additive manufacturing. This is the country's first pedestrian bridge made with 3D-printed concrete. This approach, recently announced, marks a step in the adoption of alternative construction methods for public works, seeking efficiency and new design possibilities.
Technique and Advantages of 3D Printing with Concrete 🏗️
The technique consists of depositing layers of special concrete in a controlled manner by a robotic arm, following a digital model. This process allows for the creation of complex geometric shapes that would be costly or unfeasible with traditional formwork. A reduction in material waste and a potential saving of time on-site are noted, by minimizing manual and assembly processes.
A Bridge That Isn't Printed in Five Minutes ☕
Although it sounds like future technology, don't expect to see a giant printer spitting out the complete bridge in an afternoon. The process is still meticulous and requires concrete with a very specific formulation so it doesn't collapse layer by layer. It's an advancement, but the workers probably still prefer their traditional coffee, and not a 3D-printed one, to get through the workday.