What is AAC?
Autoclaved aerated concrete is manufactured from water, cement, lime, silica sand and a small amount of aluminium powder as expanding agent. The production techniques impart many unique properties to AAC, making it both economically and environmentally better than other masonry building materials. It can be customised in blocks, wall, floor and roof panels with a range of sizes depending on specific applications, allowing for maximum efficiency and flexibility in construction.
How is AAC Made?
The raw materials are mixed into a slurry state and poured into a mould. The expanding agent (aluminium powder) instantly initiates a chemical reaction to create numerous tiny and finely-dispersed hydrogen air bubbles. This causes the mixture to expand to almost twice its original volume. Once the mixture is hard enough (semi-solid) to be wire cut into required panel sizes in a heated room, it will be transported to a cutting machine. Once sliced the semi-solid material will be cured with high-pressure steam in autoclaves for up to 12 hours. The high pressure steam accelerates the hydration of the concrete. The combination of the expanding chemical reaction and autoclave curing process gives AAC its unique properties that are beneficial to buildings.
NASAHI AAC Panel
For the highest standards in AAC Panels, Walsc has partnered with the leading brand in AAC Panel manufacturing. At the heart of every Walsc AAC Panel System is the NASAHI AAC Panel.
With world class manufacturing technologies imported from Japan and Sweden, NASAHI is one of the world-leaders in AAC panel manufacture and application technologies after years of self-research and re-innovation. The annual manufacturing capacity of their AAC products is about 700,000m3 , of which 30% - 40% are exported to Japan, Africa, Australia and New Zealand.
NASAHI has the largest scale of panel production, the most advanced technology, the most perfect detecting method and the greatest export volume in China.
Walsc has been working with NASAHI very closely since 1997. The long and solid foundation between Walsc and NASAHI guarantees the best quality. AAC Panels will be adopted in every single project.
Benefits
Walsc AAC Panel Systems are designed to provide a superior wall and floor solution. Its excellent airborne noise transmission properties result in a quieter, more comfortable home at a significantly reduced cost compared with concrete or brick.
Fire Resistance
AAC material has earned a reputation for its outstanding fire-resistant properties. It is non-combustible and offers the best fire-resistant performance among any building material currently on the market. In case of fire, it does not release toxic gases and smokes or drip burning materials and prevents spreading of fire.
Sound Insulation &
Noise Reduction
NASAHI AAC Panel is proven to be an extraordinary acoustic insulation material by building a defence against external noise pollution. Its sound insulation value is greater than other materials of the same weight.
Strong & Durable
NASAHI AAC Panel enhances the strength and security by combining with the corrosion protected steel, the durability is quite similar to concrete.
The AAC panel has a working density of 650kg/m3 making them highly resistant to chipping and damage during delivery and handling. Nasahi Panels are also thermally stable, providing long-term durability.
