LUYTEN 3D is an Australian construction technology company based in Melbourne that specializes in large-scale robotic 3D printing for concrete structures. Instead of traditional building methods, the company develops automated systems that “print” buildings and infrastructure layer by layer using specially formulated concrete. Their focus is on improving efficiency, reducing labor, and enabling construction in environments that are difficult or costly to access using conventional techniques.

In 2026, LUYTEN 3D, in collaboration with the University of Wollongong, introduced what is described as the first underwater 3D concrete printing system in Oceania. This system allows concrete structures to be printed directly underwater, rather than requiring dry conditions or temporary enclosures. It operates similarly to land-based 3D printing but is engineered to function in submerged environments such as ocean floors, ports, and offshore construction sites.

A key part of this innovation is the development of a new type of concrete that can be printed underwater without the need for chemical accelerators. Traditionally, underwater concrete requires additives to help it set quickly and prevent it from dispersing in water. LUYTEN 3D’s material is designed to remain stable and cohesive while being deposited underwater, allowing it to harden effectively without those additional chemicals. This is often highlighted as a world-first advancement in construction materials.

The system has practical implications across several industries. It can be used to build or repair marine infrastructure such as bridge foundations, harbor structures, offshore energy installations, and coastal protection systems. By eliminating the need for draining water or relying heavily on divers and complex equipment, the technology can reduce costs, improve safety, and speed up project timelines.

According to the Internet