Comparison of Bricks with Concrete blocks

Differentiate between Burnt bricks and concrete blocks.

Ans :

BURNT BRICKS	CONCRETE BLOCKS
1) Clay bricks are made from sand,      clay, lime etc.	1) Concrete blocks are made from cement, sand and broken stones.
2) Relatively less compressive             strength (maximum 35Kg/sqcm)	2) Better compressive strength. (Around 150kg/sqcm.
3)Manufacture of bricks in conventional clamps is not possible in Rainy season.	3) Concrete block manufacture is possible in Rainy season under shelter.
4) Relatively less thermal & sound insulator.	4) Hollow blocks are good thermal & sound insulator.
5) Rate of production is low in conventional / normal clamps.	5) Rate of production is faster.
6) Needs more mortar since brick size is smaller.	6) Needs less mortar since block size is larger.
7) Ratio of space for production v/s rate of production is high.	7) Ratio of space for production v/s rate of production is less.
8) The shape, size & edge sharpness have limitations.	8) The shape, size & edge sharpness are controlled well.
9) These can get affected due to efflorescence.	9) No efflorescence effects.
10) Wall thickness increases with  the load carried. Hence carpet area gets reduced.	10) Better load carrying capacity & hence increased carpet area for higher loads.