Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 5 (Q.No. 44)
44.
For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
80 : 13 : 7
70 : 20 : 10
60 : 35 : 5
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

RAJU said:   8 years ago
The raw materials for Fly Ash Bricks are:

Material ------ Mass
Fly ash ------ 60%
Sand/Stone dust ------ 30%
Ordinary Portland Cement/(Lime+Gypsum) ------10%
Total formula of material ------100%

The strength of fly ash brick manufactured with the above compositions is normally of the order of 7.5 N/mm2 to 10 N/mm2.

Fly ash bricks are lighter and stronger than clay bricks.
(1)

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