Why Fly Ash Bricks?
FLY ASH BRICKS - A step towards Sustainability
Where many of our attempts are moving towards employing eco friendly materials as well as mode of operation, the development of fly ash bricks is one such endeavour in the field of construction. The use of red bricks which were traditionally prepared out of kiln firing had its own benefits. Clay bricks are usually made up of clay which is collected from the topsoil of land. They are porous, are fire resistant and cause sufficient reduction in sounds by absorbing them. With the increase in demand, there arose not one but several problems with the use of red bricks. A gist of the troubles round the corner include:
- The growing demand of bricks for construction requires ready availability of raw materials. Continuing use of clay bricks to fulfill the demand will lead to extensive loss of fertile topsoil, which has a devastating effect on our environment.
- Without any alternative, the rising demand would result in price hike of the clay bricks. To keep the ultimate cost of building materials within affordable range, finding an alternative to clay bricks like fly ash bricks and hollow or solid blocks becomes quintessential.
- Use of alternatives like flyash bricks or other alternative building materials would also help slow down the rate of deforestation. Year by year, a huge amount of top fertile layer of soil is destroyed for brick manufacturing.
- Burnt clay bricks are devoid of any quality testing procedures as they are produced using old and traditional methods.
- They are often inferior in quality with low compressive strength.
- Modern Fly ash bricks are manufactured using high end pre-programmed hydraulic machines. Bricks from these machines are tested for its quality and durability.
With time the drawbacks of red bricks were overcome with the initiation of fly ash bricks. The concern of strength, sustainability and a few others could be taken care of with the advent of fly ash bricks in construction. These are some of the points of difference that were overt and noticeable:
- In the process of generating electricity through coal based thermal power plants, a large amount of fly ash is generated as residue. Such amount of fly ash residue which would otherwise have been a threat to environment, is now transformed into useful construction material.
- Compressive strength of a material lies in its ability to withstand pressure. Taking compressive strength as a factor, the fly ash bricks have much more compressive strength.
- The fly ash bricks are highly water resistant which makes them favourable for construction activities.
- These bricks have uniform size and are available in greater variety of style, colour and texture than regular bricks.
- Fly ash bricks are comparatively lighter in weight and more economical.
- Discharge of pollutants from fly ash bricks caused due to rain or bad weather is negligible.
- Non-hazardous for land-filling or disposal.
- Makes concrete structure stronger
- They absorb carbon from atmosphere which results in their long term strength.
- Light weight
- High fire Insulation
- Seepage of water through fly ash bricks is comparatively lower.