Shimizu Presents a 3D Spray Printing System for Concrete Structures
The Japanese firm Shimizu Corporation has unveiled an innovative technology for manufacturing large-scale structural elements. This system uses 3D printing based on spray deposition, which accelerates the process and provides unprecedented geometric freedom compared to traditional formwork methods. 🏗️
A Robotic Arm Directs the Manufacturing Process
The core of this technology is a six-axis robotic arm that precisely handles the print head. This head projects a special concrete mixture, allowing movement in multiple directions to create shapes that were previously unfeasible. The thickness of each layer and the material density can be adjusted on the fly.
Key Advantages of the Robotic System:- Ability to produce curved and complex geometries with high precision.
- Multidirectional movement that overcomes the limitations of fixed formworks.
- Real-time control over parameters such as thickness and material compaction.
This technique optimizes the use of raw materials and significantly reduces waste generated on site.
Material Formulation is Key
Success does not depend solely on the robot, but on the concrete mixture developed specifically for it. It must maintain a viscosity that allows it to flow through the nozzle while setting quickly enough to support the weight of subsequent layers. Shimizu is actively researching to improve the mechanical properties of the final result.
Characteristics of the Special Mixture:- Controlled viscosity to ensure uniform deposition via spray.
- Fast setting time to ensure structural stability during printing.
- Focus on meeting the mandatory strength standards in civil engineering.
Current Status and Future Prospects
Although this system promises to transform how beams and columns are manufactured, it is not yet ready to build a complete house in a few hours. The process requires the concrete to cure and reach full strength, a stage that still takes time. Nevertheless, it marks a crucial advance toward more agile and sustainable construction methods. 🔄