GGI crew with the 3D printer and mixer-pump on the roof slab at School 08

Robots and printers
on site

Electric robots lift, carry and set AAC wall panels while a crew of two guides them from a tablet. Mobile printers unfold in thirty minutes and print walls in concrete. GGI crews run both on our sites.

Two kinds
of machine

GGI uses two kinds of machine on site. Panel robots lift and set AAC wall panels, one every six minutes, with a crew of two. Mobile printers print walls in concrete without formwork.

2People per crew,
robot or printer

6 minPick, carry and set
one AAC panel

100+ m²Of wall per
robot crew per day

30 minFrom arrival
to printing

Installation by
our robot crews

Our own installation crews set the AAC wall panels. A crew of two works with each robot and guides it from a tablet. Every panel is stood, plumbed and pushed home, then glue goes on the edge of the next one. The three images below are illustrations.

Two installers in yellow coveralls beside the robot; one checks a tablet while the other holds a spirit level against the panel

The robot gripping a panel edge and pushing it against the wall beside a propped panel, an installer watching with a tablet

The robot standing a tall panel at the end of a wall with a door and a window opening, two installers beside it

Partitions, cladding
and load-bearing walls

Any reinforced AAC panel: partitions between RC columns, cladding fixed to steel or concrete frames, load-bearing walls in the full AAC system.

P
Partitions
75 to 300 mm panels, fire-rated to four hours, up to six metres high.
C
Cladding
6 m panels fixed vertically or horizontally outside steel or concrete frames.
A · B
Load-bearing walls
Full-storey panels in accommodation, villas, hotels and schools.

The AAC systems →

Panel robots standing tall AAC panels beside an office building

Mobile 3D concrete printer

The printer arrives on its own tracks, levels itself on deployable legs with no foundation, prints the walls, then folds up and drives to the next room. For upper floors it is craned onto the slab.

2,700 kgMachine weight,
craned to upper floors

13.8 mReach
diameter

6 mMaximum
print height

0.85 mFolded width:
drives through a door

Each printer works with one mixer-pump and a certified crew of two. Pre-blended dry mix in jumbo bags, water added at the pump, 15 m of hose along the arm, and a nozzle that lays 20 mm layers along the toolpath.

3D concrete printing →

The operator at the controls while the printer arm unfolds

The printer arm raised and ready to print

The operator checking the nozzle over fresh layers during a night print

Two GGI operators in blue overalls with a 3D printer in a workshop

Our crews

GGI's own crews run the robots and the printers, and are certified on these machines. The same people unfold the machine, print the walls and hand over.