Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 1 (Q.No. 22)
22.
The main constituent of fly-ash, is
aluminium oxide
silica
ferrous oxide
All of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 2 of 2.

Vinaych said:   1 decade ago
Chemical composition and classification

Component Bituminous Subbituminous Lignite
SiO2 (%) 20-60 40-60 15-45
Al2O3 (%) 5-35 20-30 20-25
Fe2O3 (%) 10-40 4-10 4-15
CaO (%) 1-12 5-30 15-40
LOI (%) 0-15 0-3 0-5

Saurabh singh said:   1 decade ago
How all four can be main constituents?


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