Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 7 (Q.No. 16)
16.
The percentage of alumina and silica in good fire clay vary respectively is
Discussion:
12 comments Page 1 of 2.
Vicky said:
7 years ago
For low duty fireclay 22% to 27% Alumina and 67% to 71% silica.
For intermediate duty fireclay 24% Alumina to 70% Silica.
For high duty fireclay 33% to 40% Alumina and 55% to 63% Silica content.
So, option C gives good bricks than other options. So I think 'C' is the correct option.
For intermediate duty fireclay 24% Alumina to 70% Silica.
For high duty fireclay 33% to 40% Alumina and 55% to 63% Silica content.
So, option C gives good bricks than other options. So I think 'C' is the correct option.
(1)
Viki said:
6 years ago
Fire clay is used to make fire bricks and is generally found under the coal seams. Fire clay contains two major constituents- silica and alumina, of which, the silica percentage varies from 60 to 70% and alumina varies from 25 to 35%.
(1)
Azeem said:
7 years ago
The answer is Option D.
20-30% alumina and 55-75% silica.
Ref : SK Duggal Article 2.20.
20-30% alumina and 55-75% silica.
Ref : SK Duggal Article 2.20.
Sai prasanna kumar reddy said:
9 years ago
I think C is the right answer A is wrong because of alumina: 20-30 & silica: 50-60.
Shahrukh said:
8 years ago
18 to 44%--alumina 50 to 80%---silica option D is correct.
Garry said:
8 years ago
Options C is the right answer for this question.
Lakahan singh said:
8 years ago
The Answer is D.
Ref: Article 2.2 SK Duggal.
Ref: Article 2.2 SK Duggal.
(1)
Prameshwar tharu said:
7 years ago
It's really helpful for us, thank you all.
Pushap said:
7 years ago
25 75 is used for refactory brick.
(1)
Soumalya Dey said:
8 years ago
Yes, C is the right answer.
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