Civil Engineering - Building Materials - Discussion


The main ingredient of a good quality brick earth, is

[A]. magnesia
[B]. lime
[C]. silica
[D]. alumina.

Answer: Option D


No answer description available for this question.

Aayush Panthi said: (Sep 27, 2015)  
Silica is contained 50 to 60 percent in brick. So it should be main constituent.

Bittoo Singh said: (Oct 6, 2015)  
Silica may be the answer.

Karan said: (Nov 23, 2015)  
Silica: 50% to 60%.

Alumina: 20% - 30%.

Aditya Singhwal said: (Dec 15, 2015)  
Silica is the major constituent of brick beside of others.

Nirupam Sinha said: (Mar 11, 2016)  
Silica may be higher in percentage. But alumina gives bond strength so it is consider main constituent.

Nimmy said: (Aug 4, 2016)  
Thanks for the solution.

Saunti said: (Oct 26, 2016)  
It should be silica.

Pramay said: (Nov 3, 2016)  
Yes, Silica is the right answer.

Ravindra Bhalerao said: (Nov 12, 2016)  
It should be silica.

Karan said: (Jan 9, 2017)  
Obviously, Silica is the major constituent of Brick so 'C" is the best answer.

Rajesh Thakur said: (Jan 11, 2017)  
The major role in bricks composition is done by aluminium because it provides plasticity none of the other compounds can do so.

Rajan Yadav said: (Jan 14, 2017)  
Silica is the right answer.

Gajan Rana said: (Jan 21, 2017)  
Major constituent is Alumina not silica. No matter what is percentage is. Alumina provides plasticity to bricks.

Sndip said: (Feb 17, 2017)  
Silica is the right answer.

Dileepan said: (Feb 17, 2017)  
Alumina 20-30 percentage is correct because its absorb water and imparts plasticity to the clay and makes brick hard.

Ravi said: (Mar 3, 2017)  
The right answer is Silica.

Deep Kwatra said: (Mar 11, 2017)  
Yes silica has more percent (50-60) and alumina has (20-30) but the main ingredient for its good quality is Alumina. So, the answer must be D.

Arindam Roy said: (Mar 14, 2017)  
Silica is the right answer.

Vinay said: (Apr 2, 2017)  
Silica provides the strength to the brick and major constituent 50-60%. So C is correct answer.

Yashi Agarwal said: (Apr 15, 2017)  
Silica is the correct answer.

Satish Singh said: (May 2, 2017)  
I know that alumina = 20-30% & silica=50-60% but alumina considered main constituent of brick work.

Apan Majumder said: (May 4, 2017)  
Alumina because it impart plasticity.

Ravi said: (Jun 18, 2017)  
Silica is the right answer.

Raisa said: (Jul 11, 2017)  
20% to 30% Alumina. 50% to 60% silica.

Vijay Vikram said: (Aug 3, 2017)  
Silica is the right answer.

Deepakrawat said: (Aug 5, 2017)  
Silica may b the major constituent of the brick earth but a principal constituent of the brick earth is ALUMINA. So it's right.

Nagaraj Naik L G said: (Sep 9, 2017)  
Alumina is the right answer.

Kunnu said: (Nov 22, 2017)  
Alumina is the main constituents in brick it provides clay plasticity.

Karan Garach said: (Dec 5, 2017)  
Silica contains 50 to 60%. So that right answer is C.

Ronak Halani said: (Dec 11, 2017)  
Silica is the right Answer.

Abhishek Kumar said: (Dec 23, 2017)  
Main ingredients=Alumina.

Major ingredients= silica.

Himanshu said: (Jan 8, 2018)  
Silica should be answer.

Priya said: (Jan 20, 2018)  
Silica is the correct answer.

Sir said: (Feb 21, 2018)  
Alumina is the right answer. Because it impart plasticity. It not asking about higher % its asking about main.

Hemant Kumar said: (Mar 11, 2018)  
Silica is the correct answer.

Devender Berwal said: (Apr 11, 2018)  
The Right answer is Alumina.

Aashutosh Anand said: (Jul 14, 2018)  
Yes, alumina is the right answer because it absorbs the water and imparts the strength of bricks.

Rahul said: (Aug 9, 2018)  
Alumina is correct. I agree.

Vivek Raj said: (Sep 29, 2018)  
Silica is the correct Answer.

Arvind Mourya said: (Oct 8, 2018)  
Alumina is primary necessary ingredients for brick provided plasticity to tha brick and moulded in proper shape.

Viru Kapoor said: (Nov 1, 2018)  
It is alumina.

Alumina gives plasticity and shape to Bricks.

Neelkanth said: (Dec 1, 2018)  
Alumina is the correct answer because its impart the plasticity.

Hariram Meena said: (Jan 4, 2019)  
Alumina is the correct answer.

Krrish said: (Jan 12, 2019)  
Alumina is correct. I agree with the given answer.

Talib said: (Jun 20, 2019)  
It is the main ingredient, not the major one so the answer is correct.

Sajjad Khan said: (Sep 25, 2019)  
The most important ingredient in the brick earth is SILICA. The amount of silica present in brick earth is 50-60% and it prevents cracking and warping of raw bricks.

Chetan C said: (Nov 14, 2019)  
Alumina is the principal constituent of every kind of brick earth. It imparts plasticity to the brick earth which is essential for proper molding of bricks. Clay in brick earth shrinks and cracks on drying. It also wraps and becomes very hard on burning unless mixed with sand.

Anand said: (Dec 2, 2019)  
Alumina is the right answer. It provides the plasticity to the brick, not the percentage of composition that makes silica the main ingredient.

Jei said: (Aug 21, 2020)  

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

Gaurav said: (Aug 25, 2020)  
Silica is the right answer.

Timti said: (Nov 7, 2020)  
Alumina is the right answer.

Puski said: (Dec 2, 2020)  
Silica is the right answer.

Gaurav Gawande said: (Dec 8, 2020)  
I agree @Abhishek Kumar.

Bisy said: (Dec 28, 2020)  
Alumina main constituent, silica major constituent.

Nehra said: (Jan 23, 2021)  
Silica is the correct answer because strength is main function of brick.

Dorna said: (Dec 30, 2021)  
Alumina is the main constituent of clay. It acts as a cementing material in raw brick. Brick clay is plastic due to the presence of alumina. This plasticity ensures that bricks can be molded. An excess amount of alumina in clay may cause the bricks to shrink, warp or crack on drying and burning as any other cementing material.

Sreemonta Saikia said: (Feb 7, 2022)  
Silica is the correct answer.

Emran said: (Mar 3, 2022)  
Yes, Alumina is correct. Agree with the given answer.

Skr said: (Mar 13, 2022)  
In case of ingredient, it is alumina and in the case of a constituent, it is Silica.

Vinod Sharma said: (Mar 24, 2022)  
Silica is the main constituent of brick.

Niraj said: (Mar 29, 2022)  
The Percentage content of brick does not make the brick as the main constituent. The only thing that matters is function or role similarly. Alumina plays a major role in brick as mentioned by most of the guys above. So, alumina is the best answer.

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