
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 (
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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 calcium silica hydrate, 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


| Types of Products |
Wehrhahn Technologies (
Agent for
email address: velteninfo@gmail.com
Other products available:
1. AAC Lightweight Block Hand saw
3. AAC Lightweight Block Steel Tie (Fishtail).
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