AAC Aerated Autoclaved Concrete (lightweight construction blocks)
Leichtbric is an Aerated Autoclaved Concrete also known as AAC. Leichtbric AAC is proven to be very durable material. The material is lightweight and it offers many benefits such as: high thermal insulation, fire and mold resistance, acoustic insulation, accurate sizes that can be easily cut with ordinary carpentry tools for simplified construction. The superiority of Leichtbric AAC has been tested and we are proud to say that our Leichtbric AAC conforms to fire rating standards of BS 476 and AS 1530.4 of over 240 minutes. Leichtbric AAC is of very high quality and versatile product that can be used for other purposes as well. Size of brick is 600 mm x 200 mm x 75, 100, 125, 150, 175, 200. Leichtbric AAC blocks are done with German technology - Wehrhahn Technologies (Germany)
BENEFITS
DURABILITY
Durability and its environmental impact is an important factor when considering the use of a building material. Autoclaved Aerated Concrete is proven to be a very durable material. LeichtBric AAC will not rot, warp, rust, corrode, or otherwise decompose. LeichtBric AAC provides a very low maintenance, cost & time, saving solution for your building consideration.
HIGH THERMAL INSULATION LeichtBric AAC has exceptional thermal insulating qualities. Buildings constructed with LeichtBric AAC tend to be cooler in summer and at the same time you can enjoy energy & cost savings on electricity.
FIRE RESISTANCE LeichtBric AAC is an inorganic material that does not burn. The melting point of Autoclaved Aerated Concrete is over 1593ºC, more than twice the typical temperature in a building fire of 649ºC. LeichtBric AAC conform to BS 476 (British Standards) and AS 1530.4 (Australian Standards) to a 240 minutes fire rating test.
ACOUSTIC INSULATION
A commonly overlooked environmental problem is noise pollution. The solid wall construction of a building made of LeichtBric AAC provides exceptional acoustic insulation. Its porous structure & high surface mass, coupled with its ability to dampen mechanical vibration energy, greatly reduces outside environmental noise pollution & the indoor echo effect in empty room thus providing a quieter and more comfortable interior for the occupants.
PEST & MOLD RESISTANCE LeichtBric AAC is an inorganic, insect resistance, solid wall contruction material. It is impossible for insects & rodents to inhabit in them. LeichtBric AAC is also Mold resistance. The typical nutrient source for mold is moisture damaged building masterials. LeichtBric AAC is breathtable, concrete product made with clean, inorganic materials, does not offer the nutrients for mold growth.
IMPROVED INDOOR AIR QUALITY LeichtBric AAC is an inorganic material that contains no toxic substances & does not decompose or release gas. Since Autoclaved Aerated Concrete is a structural and insulation material, it allows the elimination of other materials that may contribute to poor indoor air quality.
WORKABILITY
LeichtBric AAC blocks are quickly & accurately cut with a band saw to the desired dimensions, and into accurate angles and other shapes. LeichtBric AAC can also be drilled, nailed, grooved, routed, shaped, sculpted, carved, coated, floated, screwed into and milled with common tools & finish with paint, tile, drywall or veneer. Window trim, chases for plumbing, wiring & outlets and decorative features like keystones, window sills and column can easily be created on the job site.
SIMPLIFIED CONSTRUCTION LeichtBric AAC simplifies construction by minimizing the number of different building products involved. Building ownes may see a significant reduction of maintenance and energy costs as well as an increase in overall comfort and safety.
LeichtBric video installation
Raw materials
Quartz sand, lime and/or cement as binding agent. Aluminum powder in 5%–8% by volume (depending on the pre-specified density) and water. When mixed and cast in forms, several chemical reactions take place that give AAC its light weight and thermal properties. Aluminium powder reacts with calcium hydroxide and water to form hydrogen. The hydrogen gas foams the raw mix to double the volume (with gas bubbles up to 1/8 inch in diameter). At the end of the foaming process the hydrogen escapes to the atmosphere and is replaced by air. When the forms are removed from the material, it is solid but still soft. It is then cut into either blocks or panels, and placed in an autoclave chamber for 12 hours. During this steam pressure hardening process, when the temperature reaches 374° Fahrenheit and the pressure reaches 12 bars, quartz sand reacts with calcium hydroxide to form calciumsilicahydrate, which accounts for the material's high strength and other unique properties. After the autoclaving process the material is ready for immediate use on the construction site. Depending on its density, up to 80% of the volume of the mass is air. Density also accounts for the low structural compression strength of AAC material, which can carry loads up to 1,200 PSI, approximately 1/6th of stronger concrete
