A
Accommodation
Complete AAC accommodation buildings up to G+4: wall panels, floor and roof slabs, no RC columns or beams.
Load-bearing
AAC system
The full load-bearing AAC system from the autoclave to the site: wall panels, floor and roof slabs and lintels that combine into a complete precast structure. The system needs no RC columns or RC beams and is finished with coating and paint.
Complete buildings
in AAC
Vertical wall panels, floor and roof slabs and lintels combine into a complete precast, load-bearing structure on an RC raft or grid-beam foundation, and can contribute up to 20 LEED points.
25+Years supplying
and installing AAC
and installing AAC
6 mMaximum slab
and panel span
and panel span
G+4Storeys in
load-bearing AAC
load-bearing AAC
4 hrFire rating
at 100 mm
at 100 mm
No RC columns
or beams
Three reinforced AAC components on an RC ring beam and foundation cast by the main contractor.
- 01
Wall panels
Full storey height, up to 6 m long and 600 mm wide, 100 to 300 mm thick. Load-bearing external and internal walls.
- 02
Floor and roof slabs
Reinforced slabs up to 6 m, simply supported on the AAC walls or on concrete or steel beams.
- 03
Lintels
Over doors and windows, cut to the opening, same material as the wall.
- 04
RC ring beam and foundation
Cast by the main contractor to our coordination drawings. A raft 20 to 45 cm or grid beams under the walls is usually enough.
Why AAC
Density 650 kg/m³, minimum compressive strength 4.0 MPa, thermal conductivity 0.12 W/m·K, 40 dB STC at 100 mm and 48 dB at 200 mm. The full technical data sheet is in the catalogue.
- 01
No stiffeners, RC columns or RC beams
- 02
Lightweight: 650 kg/m³
- 03
Acoustic insulation from 40 to 80 STC
- 04
Fire resistance: 4 hours at 100 mm
- 05
Low thermal conductivity
- 06
Finished with a polymer coating
- 07
Easy to cut, chase and open
- 08
Variety of forms and sizes
- 09
Environmentally friendly
- 10
Cost-effective options
- 11
Approved by Qatar Civil Defence
Six sub-systems
The system is sold and installed as six sub-systems. Each has its own brochure with details, drawings and projects, sent on request.
B
Buildings
Villas, compounds, hotels, schools and mosques built in AAC walls alone or in the full walls-and-slabs system.
E
Extensions
Extra floors and extensions on existing buildings: light AAC walls and slabs that the old structure can carry.
G
Garages & parking
Garages and car parks in AAC walls and roof slabs: light, fire-rated and quick to install.
H
Hollow-core & AAC walls
Prestressed hollow-core slabs on AAC wall panels: longer rooms, the same light, fire-rated, insulated walls.
R
Roof systems
Reinforced AAC roof slabs on any wall: 6 m spans, direct-paint ceilings, insulation built in.
How AAC
is made
Quartz sand, cement, lime and a trace of aluminium, steam-cured into a cellular silicate with millions of air pores. Complies with DIN EN 12602 for prefabricated reinforced AAC components.
- 01
Raw materials
Quartz sand, cement, lime, gypsum and water, dosed by weight.
- 02
Reinforcement
Welded steel mesh, anti-corrosion coated, set in the mould for each panel.
- 03
Mixing and casting
Aluminium paste is added and the slurry cast around the cages.
- 04
Rising
Millions of pores form; the cake rises and sets in a few hours.
- 05
Cutting
The green cake is wire-cut to length, width and thickness.
- 06
Autoclaving
Steam-cured under pressure into a calcium silicate structure.
- 07
Packing
Panels inspected, banded on pallets and loaded for site.
Step by step
Nine steps from the pallet to the finished wall, by our own crews with crane or robot. Shop drawings, method statements and typical details are issued for each project.
- 01
Lifting and shifting
Panels lifted off the pallet and moved to each wall location by crane or robot.
- 02
Survey of points
Wall lines and panel positions set out on the slab from the approved shop drawings.
- 03
Bed of glue
A bed of AAC glue is laid along the marked wall line.
- 04
Erecting the panels
Each panel is stood, plumbed and pushed home.
- 05
Vertical joints
The tongue-and-groove joint is glued; the panel is braced until the row is complete.
- 06
Continuing the erection
Wall erection continues panel by panel as per the layout.
- 07
Lintels and slabs
Lintels go over the openings; floor and roof slabs are set by crane on the finished walls.
- 08
Hidden fixings
All mechanical fixings are hidden: no visible screws, dowels or bolts.
- 09
Finishing
Polymer putty and coating, paint, tiles, cladding or any other finish.
Full-system
buildings
Ask for the
catalogue
The AAC System catalogue carries the technical data, design rules, installation method and typical details. Tell us about the project and it comes with the reply.
Head office Doha, Qatar +974 4435 3643