• AAC Plant Engineering
• Autoclaved Aerated Concrete
• Green Building in Hawaii
• Passive House Zero Energy
• MHE-POR - Super Lightweight AAC
• Solar Systems - Renewable Energy
• Windows & Doors
• Construction Services
• Landscaping Services
• Design & Engineering
• German Glass Enclosures
• Michael Hofmann Engineering Consultancy
The superior solution in the world of building materials and construction systems today . Thousands of architects, engineers, builders, owners, developers and other professionals, around the world validate the better properties of AAC in their own work and own valuable property and investment because of its proven advantages for more than 80 years. AAC is a unique building concept, which offers innumerable building advantages. The technology of producing building blocks from the natural raw materials quartz sand and lime has been around since the end, of last century. Around 1900, the process was improved by adding steam curing. This was the starting point for a completely new material. Autoclaved Aerated Concrete (AAC) embodies so many positive properties, that they could only be equaled by using a combination of different materials. AAC ranks as an incombustible building material.
Autoclaved Aerated Concrete (AAC) is made from silica sand, lime, cement and water, to which an expanding agent is added. The AAC manufacturing process starts when the sand is ground to the required fineness in a ball mill. Raw materials are then automatically weighed and measured in the mixer along with water and an aluminum paste (the expanding agent). After mixing, the slurry is poured into metal molds in which the expanding agent reacts with the other elements. The mixing results in a chemical reaction that expands the mixture to form small, finely‐dispersed air spaces. The molds are sent to a pre‐curing room for several hours. Then the semi ‐solid material is transported to the cutting machine. The cutting machine cuts the molds, using steel wires, into the size required for the building elements. The products homogeneity combined with our high precision cutting technology, results in pieces with dimensional tolerances of 1/16”.The final phase in the production process is steam pressure curing in autoclaves for up to 12 hours. Block, panels and other AAC elements are removed from the autoclave, packaged and sent to the finished product storage. AAC reinforced elements, such as floor panels, wall panels, and lintels contain steel reinforcement mesh that is treated for corrosion with a water based acrylic, then placed in the mold before the slurry is added. The manufacturing process is then the same as described above for un reinforced elements.
Why is AAC considered a green and environmental building material?