Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 4 (Q.No. 23)
23.
The main ingredient of a good quality brick earth, is
magnesia
lime
silica
alumina.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
68 comments Page 2 of 7.

Aleem khan nasar said:   2 years ago
Silica is 50 to 60% and more than alumina, but the main constituent is alumina because alumina gives the binding property.
(6)

Dileepan said:   9 years ago
Alumina 20-30 percentage is correct because its absorb water and imparts plasticity to the clay and makes brick hard.

Arvind mourya said:   7 years ago
Alumina is primary necessary ingredients for brick provided plasticity to tha brick and moulded in proper shape.

Gajan Rana said:   9 years ago
Major constituent is Alumina not silica. No matter what is percentage is. Alumina provides plasticity to bricks.

Sir said:   8 years ago
Alumina is the right answer. Because it impart plasticity. It not asking about higher % its asking about main.

Jei said:   5 years ago
@All.

They asked which is good quality brick earth, not a major ingredient. So alumina is a correct answer.

Nirupam Sinha said:   9 years ago
Silica may be higher in percentage. But alumina gives bond strength so it is consider main constituent.

Satish singh said:   8 years ago
I know that alumina = 20-30% & silica=50-60% but alumina considered main constituent of brick work.

Adnan khan said:   3 years ago
Alumina is the correct answer.

Because here gave plasticity while the answer is based on property.
(8)

Aashutosh anand said:   7 years ago
Yes, alumina is the right answer because it absorbs the water and imparts the strength of bricks.


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