Comparison between Fly ash bricks and Clay bricks

In our previous article Fly ash bricks, we discussed about the characteristics of fly ash bricks and its advantages. Recently one of our readers asked about the differences between fly ash bricks and clay bricks. Here we have compared both the bricks on the basis of their characteristics.

Fly ash bricks	Clay bricks
The color of fly ash brick is same as the manufacturing is carried out using machinery in controlled condition.	Not in uniform color as the color of brick depends upon type of soil and quality control during production.
Uniform in shape and smooth in finish as the manufacturing is carried out using machinery.	Clay bricks are uneven in shape as mostly clay bricks are made manually.
As the surface is even and joints are thinner, no plastering required in normal cases.	As the surface finish is not even, plastering is necessary.
Fly ash bricks are lighter as the main composition is fly ash.	Clay bricks are heavier as compared to fly ash bricks.
Fly ash bricks are less porous.	Clay bricks are more porous.
The cost of fly ash brick is approximate 30% lower than clay brick.	The cost of clay brick is higher than fly ash brick.
This is made by using by-product of Thermal Power Plant, which save environment from being polluted.	Continuing use of clay bricks in construction industry will lead to extensive loss of fertile top soil. This could be a devastating environmental hazard.