Features of AAC Products
Most notable features of AAC products are listed below:
One of the key features of AAC products is lower weight compared to clay bricks or concrete blocks (CMU). AAC products have a cellular structure created during manufacturing process. Millions of tiny air cells impart AAC products a very light weight structure. Density of these light weight AAC blocks usually ranges between 400 – 800 kg/m3. Yes, AAC blocks are lighter than water and literally float on water.
Ease of Use
AAC products are very easy to work with. AAC blocks can be cut or drilled using normal tools used with wood. Since AAC is cured using steam, it is ready to be used as soon as it comes out of autoclave.
AAC products can be used to make any design, be it carving or irregular shapes. Moreover it can be manufactured in various shapes and sizes to suit intended purpose.
AAC does not rot or deteriorate over time. Structures built with AAC products have a long life and retain good finish even after decades. Although actual life of AAC products depends on various factors, as per various standards institutes, lifespan of AAC may go up to 100 years or more.
Ash disposal is a major concern for any thermal power plant using coal. Fly ash or pond ash generated by such power plants can be put to constructive use for AAC manufacturing. Moreover AAC manufacturing process requires less energy, has very low emission and does not generate any waste products.
Buildings constructed using AAC products have lower ’embodied energy’. Using AAC blocks and panels is highly recommended for any ‘Green Building’ project.
Due to cellular structure, AAC products offer excellent thermal insulation. Usage of AAC products leads to energy savings for HVAC (Heating Ventilation And Cooling) needs. Use of AAC products offer walling, insulation and fire protection solution eliminating need for different materials for different needs.
AAC products offer amazing fire resistance. 8” wall made from AAC blocks can resist fire for up to five hours.
Tiny air pockets created during AAC manufacturing process stop sound from propagating from one end of the wall to another. Sound insulation of a wall built using AAC is much higher than a wall of similar thickness built using other materials. Some AAC companies even offer special AAC products produced specifically for sound insulation.
AAC products do not decay, rust, deteriorate or burn. Building constructed using AAC products have better chance of surviving earthquakes due to reduced weight of entire building. It comes highly recommended for areas with high seismic activity. AAC structures are known to maintain structural integrity in heavy rains, extremely low temperature and salty air.
Primary raw material used to manufacture AAC blocks and panels is fly ash. Fly ash (or pond ash) is an inert material and does not allow termites or other pests to survive.
Over and above what is mentioned here, there are many other features of autoclaved aerated concrete products.