Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 5 (Q.No. 23)
23.
The minimum percentage of chemical ingredient of cement is that of
magnesium oxide
iron oxide
alumina
lime
silica.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.

Sam said:   1 decade ago
FeO is least 0.5-0.6%.

Vinay said:   1 decade ago
Ingredient percentage in cement:

Lime 60-65.
Silica 17-25.
Alumina 3-8.
Magnesia 1-3.
Iron oxide 0.5-6.
Calcium Sulphate 0.1-0.5.
Sulphur Trioxide 1-3.
Alkaline 0-1.

Adnan said:   9 years ago
I agree, the given option A is the right answer.

Pushpak agarwal said:   8 years ago
The iron oxide is right.

It is given in SSC answer key.

Alok kumar said:   8 years ago
Iron oxide is right.

Bipin joshi said:   8 years ago
Iron oxide is right.

Ajak said:   8 years ago
Magnesium oxide (MgO) is right.

Vivek Thakur said:   8 years ago
Lime- 62%.
Silica- 22%.
Alumina- 5%.
Calcium Sulphate- 4%.
Iron Oxide- 3%.
Magnesia- 2%.
Sulphur- 1%.
Alkalies- 1%.
(2)

Sharmi said:   8 years ago
Magnesium oxide is correct. I agree with the given answer.

Amit Kumar said:   8 years ago
Magnesium oxide is correct I agree with this answer.


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