Which Blocks are best for construct a large building?

 

Introduction

 

Lightweight blocks are manufactured using AAC technology. where AAC means ( Autoclaved Aerated Blocks). Lightweight aac blocks are less expensive, cost-saving, durable, sound resistant, fire resistant etc. AAC blocks are produced by mixing fly ash, cement, gypsum, lime and a little bit of quantity of aluminium powder. These blocks mainly use in buildings and complexes because they are lightweight. In today's world, aac blocks are in high demand due to their high strength, load-bearing and thermal insulation properties.

 

Raw materials used in AAC Blocks

 

There are many raw materials that are used in the manufacturing of aac blocks. AAC comprises of mixing of fly ash, cement, gypsum, lime and a little bit quantity of aluminium powder. the water percent with flyash is 0.6 and with sand is 0.65%.

 

Specification Of AAC Blocks

 

·        Size

 

There are four different sizes of aac blocks available in the market. The price of each block is also different.

 

600mm x 200mm x 100mm

600mm x 200mm x 150mm

600mm x 200mm x 200mm

600mm x 200mm x 225mm

 

·        Structural Capability

 

The compressive quality of  Autoclaved aerated concrete  (AAC)  blocks is excellent.  The compressive quality of acc blocks is from 38 to 49 kg. the lightweight aac blocks is 3-4 times lighter than the traditional red bricks, it is very easy and cheaper to transport. it reduces a dead load of a building & allowing the construction of the taller building.

 

·        Thermal Insulation

 

It totally depends on the climate in which AAC Blocks are used. With the mixture of concrete and air pockets, the level of aac is moderate. The result is savings in heating and cooling costs.

 

·        Sound Insulation

 

Normally the material has more density it always reflects the sound back due to the high density of the material. Basically, sound travels as a wave. so, with closed air pockets, AAC can provide very good sound insulation. It has superior sound absorption qualities due to the porous structure of blocks.

 

·        Durability and moisture

 

Moisture can seriously damage a structure. The macro-pores inside the AAC block ensure less water absorption. Thus, they provide better moisture protection. AAC Blocks cannot be affected by the harsh climate conditions and does not degrade under normal atmospheric conditions.

 

Process of AAC Blocks

 

Lightweight AAC Blocks Raw Material Preparation includes fly ash, cement, gypsum, lime, water and a small quantity of aluminium powder, soluble oil, plastic squeeze. after that Batching plants which automated enables accurate dosing, weighing and mixing of all the raw materials. after that cutting process will be started. it is removed from the mould and cut with wires into blocks. after cutting the aac blocks are hardened by autoclaving in a saturated steam atmosphere at a temperature of approx. 180-190 degrees C. the last step of the process is to packed the blocks and ready for dispatch to the customers.

 

 

AAC block vs red brick

AAC block makers are sought after by construction companies in India, as this new age building material is more than conventional bricks due to several reasons. Firstly, bricks are heavy and their use in building construction adds to the cost and wastage. And also AAC blocks are lightweight blocks. AAC blocks weigh about 80% less than conventional red bricks and reduce the use of cement and steel, leading to cost savings. Also, being eco-friendly, AAC blocks ensure better durability and better sound and heat insulation than bricks.