Aerated Autoclaved Concrete (AAC) is a technology that has been in use for over 80 years in more than 110 countries worldwide. Using this technology over 50 lakh structures including, residential units, flats, hospitals, industrial and commercial projects have been built globally.
In India too research has been going on in order to further improve the sustainable features of the technology. Around 70% flyash content is added , which makes the technology even more environment-friendly, as well as helps in reduction of cost. This new technology can potentially transform the way buildings are constructed in the country. The technology can help people build sound structures, which are also economical, when it comes to the cost.
A lot of research has been going on around the world for developing light weight concrete. AAC produced , using fly ash is not only environment-friendly, but also a cost effective building solution. The concrete can be used for the construction of an entire structure or for the construction of different components of a building such as walls or roof.
In conditions where the soil quality is not upto the mark or when more number of floors need to be built, this technology can play a key role, with its light weight, as well being an economical solution, cost wise. Lightweight building material is also required in seismically active zones. The key ingredients that go into the making of AAC include – cement, water , fly ash or bajri Quick Lime, Gypsum and Aluminium Powder. What this means is that production is easy even in places where bajri is not easily available. AAC is ideally suited for the construction of multistoried buildings, partitions and other structures, where there is a requirement for a lightweight building material. An added advantage with AAC is that its use also brings down the consumption of steel required in a building’s construction, leading to further cost savings.AAC is also ideally suited for construction in hilly terrain. The production process of AAC does not result in any harmful emission or by-product. The material also offers protection from heat and fire. The use of the material also helps to increase the speed of construction.
The world-over the use of clay bricks for building construction has been going on for centuries together now. However, the use of clay bricks also has its fair share of disadvantages. One of the major disadvantages is the fact that thousands of acres of fertile top soil is lost. The use of AAC blocks can help save this huge loss of fertile soil, which otherwise can be used for agriculture. The smaller size and dimensions of clay bricks mean that there is more wastage of material and labour whenever construction takes place using them. With the use of AAC blocks this wastage can be avoided. Another disadvantage with clay bricks is that their production is seasonal. What this means is that they may not be available at certain times of the year. This is not the case with AAC blocks which are available throughout the year. Moreover, the quality and dimensions of clay bricks is not always uniform. This is not the case with AAC blocks. With so many advantages, it is not surprising that AAC blocks are getting more popular by the day.For further details:
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