Autoclaved aerated Concrete Block (AAC block/light weight block ) is the light and porous building material. It has light weight keeping temperature cant burn and other advantages.it can be made into many kinds of bricks(for example :600200100, 8080180, 24011553, 600200125), they could be used industry building and common building.they are more and more popular in the world.in the future, they will replace the clay brick completely.
2. aerated concrete common conception
Common concrete density is usually 1600-2400kg/m3,but aerated concrete are 500kg/m3, 600kg/m3,700kg/m3. It has not the big grain,main use silicon material (for example: coal ash, sand, stone dust and others),through making the material small for example sand, they can be used directly if has enough degree of small (for example coal ash.Mixing calcium material lime cement water to a special slop,then add the aluminum dust and the additive. Make the aluminum dust and the special slop have a Chemical reflect.then produce Hydrogen to make the concrete slop to expanding or swell, foam. Next, put them into the curing room to concreting cutting steaming curing,last,there will become the light brick,the porous rate is 70-80%.
3. AAC block Advantages
Light weight: Aerated concrete density is usually 400-700kg/m3, (according the market in produce ), same as 1/3 of clay brick and 1/5 common concrete. So use the Light brick can reduce the weight of the build more, and also reduce the beam of roof and pillar press best. then you can see, it can save the material and cost, it also fighting shaking.
Keeping temperature: It has many porous, the delivery hearting coefficient is 0.9-0.22W/(mk),the same as 1/4 or 1/5 of clay brick, so it is best materials now in the world. Also many kinds raw material, have lowest waste. Main Materials: coal ash sand waste mine material coal stone, stone dust and other silicon materials.
4. Raw materials
Sand, fly ash, cement, lime, gypsum, aluminum
From 20000 cubic meter to 400,000 cubic meters per year.