Invention of Autoclaved Aerated Concrete (AAC) 

Autoclaved aerated concrete (AAC) blocks were first developed by a Swedish architect and inventor named Johan Axel Eriksson in the 1920s. Eriksson was looking for a building material that was lightweight, fireproof, and energy-efficient. He began experimenting with different mixtures of cement, lime, and sand and eventually discovered that by adding an expansion agent to the mixture and curing it in an autoclave, he could produce a material that met all of his criteria. Eriksson's invention was patented in 1924 and the first AAC factory was built in Sweden the following year. Since then, AAC has been used in many countries as a building material. Read more

Safety of Using AAC Blocks

Autoclaved aerated concrete (AAC) blocks are considered to be a safe building material for use in construction. They are made from natural materials, such as cement, sand, and water, and are produced under strict quality control standards. They have been widely used for many years in Europe and other parts of the world and have a track record of providing safe and durable buildings.

When used correctly and with proper design, installation and maintenance, AAC blocks are generally considered to be safe but it is always recommended to consult with a qualified building professional to ensure the safety of your building project.

Research on AAC During Earthquake

1. Germany

2. Japan

Features and Benefits of AAC Blocks

There are several advantages why autoclaved aerated concrete (AAC) blocks may be used in construction projects:

1. Lightweight: AAC blocks are significantly lighter than traditional hollow blocks, making them easier to handle and transport.
   

2. Thermal insulation: AAC blocks have a lower thermal conductivity, making them an effective insulation material. This can help to reduce energy costs associated with heating and cooling a building.
   

3. Fire resistance: AAC blocks have a higher fire resistance than traditional hollow blocks. It has a fire rating of 4 hours.
   

4. Durability: AAC blocks are resistant to weathering and decay, and have a long service life.
   

5. Sound insulation: AAC blocks have good sound insulation properties, which can help to reduce noise transmission between rooms or between the interior and exterior of a building.
   

6. Easy to cut and shape: AAC blocks can be cut and shaped using standard carbide saw, making them easy to work with during construction.
   

7. Environmentally friendly: AAC blocks and panels are made from natural materials and use less energy to produce than hollow blocks.
   

8. Cost effective: AAC blocks have lower labor cost than other materials like hollow blocks. No more plastering, no more long curing time, and faster installation methodology and lesser rebars and mortars.

9. Accuracy: The panels and blocks made of autoclaved aerated concrete are produced to the exact sizes needed before leaving the factory. There is less need for on-site trimming. Since the blocks and panels fit so well together, there is less use of finishing materials such as mortar.

10. Long lasting: The life of this material is extended because it is not affected by harsh climates or extreme weather changes. It will not degrade under normal climate changes.