S. No

Type of fuel

Compressive strength (MPa)

Decrease in compressive strength (%) of bricks compared with those fired with coal

Water absorption

Density (kg/m³)

1

Rapeseed husk (Type I)

12.5

11

20

1533

2

Sugarcane-bagasse, rice husk and used clothes (Type II)

13

7

18

1565

3

Coal (Type III)

14

0

17

1578