Civil Engineering - Building Materials - Discussion

44. 

Cement is said to be of good quality if

[A]. its colour is not greenish grey
[B]. one feels cool by thrusting one's hand in the cement bag
[C]. it is not smooth when rubbed in between fingers
[D]. a handful of cement thrown into a bucket of water does not float
[E]. none of these.

Answer: Option E

Explanation:

No answer description available for this question.

Ghanendra Singh said: (Aug 13, 2014)  
I think B option is correct because it is a physical property of cement when we check the quality of cement in field.

Ravi Mehta said: (Feb 1, 2015)  
I am agree with @Mr. Singh.

At Site:

Open the bag and take a good look at the cement. There should not be any visible lumps. The colour of the cement should normally in greenish grey. Thrust your hand into the cement bag. It must be giving you a cool feeling. There should not be any lump inside.

Take a pinch of cement and feel-between the fingers. It should give a smooth and not a gritty feeling. Take a handful of cement and throw it on a bucket full of water, the particle should float for some time before they sink.

Vikas said: (Feb 10, 2015)  
Yes option B is the correct answer, because only the option B shows the quality of cement as asked in the question.

I agree with both @Singh and @Ravi.

Prakash said: (Oct 16, 2015)  
@Ghanendra Singh said true answer please follow it.

Paramjeet Saini said: (Nov 17, 2015)  
I agree all of you.

Israr Ahmed said: (Jan 25, 2016)  
I am also agree on option B because it is the quality of cement that it must give a cool feeling.

Mukesh Maurya said: (Jul 7, 2016)  
I agree with you @Ravi Mehta.

Shubham Jaiswal said: (Jul 24, 2016)  
I agree with Ghanendra .

The right answer is B.

Ganesh Suthar said: (Aug 17, 2016)  
I think the option D is also correct.

Saunak Bhandari said: (Sep 1, 2016)  
Both A, B, C are right (field test). D is wrong it should not float but sink immediately.

Manoj said: (Sep 2, 2016)  
Option B is the only right answer for this question.

Sohan Jangra said: (Sep 29, 2016)  
Yeah, option B is the correct answer.

Praveen said: (Oct 11, 2016)  
Field test says that option B is correct answer.

Rahul said: (Oct 26, 2016)  
The correct answer is option B.

Baloch said: (Oct 27, 2016)  
Yes, I too agree that B is correct.

Vishal Sahu said: (Nov 3, 2016)  
B is the correct answer.

Ravindra Bhalerao said: (Nov 12, 2016)  
You are all correct, B is the right answer.

Sid said: (Nov 19, 2016)  
Option B is the correct answer.

Sumit said: (Dec 11, 2016)  
It is both B & D.

Sagar said: (Dec 27, 2016)  
All answers are correct except option E.

Md Nezamaddin said: (Dec 31, 2016)  
B is the right answer of this question.

Surendar said: (Jan 22, 2017)  
The correct answer should be B.

Abhishek Anand said: (Feb 10, 2017)  
Thrusting is the key word. Which means pushing hand suddenly or abruptly or violently. And sudden pull out. (root word -thrust).

Abhay said: (Feb 12, 2017)  
B is right answer.

Swathi Omkaram said: (Feb 19, 2017)  
I agree @Sumith.

Both (B & D) are correct. A good quality cement should settle down when dropped in water & it should not float on surface.

Krishna Chaitanya said: (Mar 10, 2017)  
Which put in a hand the cement should feel cool. Why because cement chemical reaction started it get hard. In this process gives a lot of heat due to chemical action.

Om Tambolkar said: (Mar 14, 2017)  
Yes, my opinion is also option B.

Wasim Sajjad said: (Mar 15, 2017)  
I think, option B is correct one.

Jitendra Kumar said: (Apr 11, 2017)  
B & C are the right answer.

I too agree with this.

Roy said: (Jul 28, 2017)  
According to me, B and D both are right.

Deepak said: (Aug 5, 2017)  
@Roy.

The cement should float for a while before it sinks to be a good cement.

Angel said: (Aug 6, 2017)  
B and D are right.

Jibin Tm said: (Aug 19, 2017)  
According to me, B is correct.

Pratik said: (Oct 10, 2017)  
According to me, B is the correct option.

Rachana said: (Nov 2, 2017)  
B is the correct option. Same mistake is done in Agor's book also.

Tanu said: (Dec 16, 2017)  
During field test,the cement is said to be good quality if;

(a) The color of cement is uniformly greenish grey.
(b) A handful of cement, thrown into a bucket of water should float for some time before it sinks.
(c) Rubbed in between fingers it feels smooth.
(d) Hand is thrust into a bag of cement it feels cool.

So here the answer will be option (b).

Varinder said: (Feb 3, 2018)  
I think Option B is correct.

Pritam Mane said: (Feb 10, 2018)  
Answer B is the correct one.

Manan said: (Mar 14, 2018)  
According to physical properties of cement bath option (B and D) are correct.

Shailendra Singh said: (Mar 29, 2018)  
Both (B and D) option are correct. But D option is more accurate as compare to option B. According to R. Agor.

Pavan said: (Apr 1, 2018)  
Option B & D are Correct according to me.

Shovon said: (May 8, 2018)  
I think B is the correct answer.

Parmanand Prasad said: (May 17, 2018)  
Only B is the right answer.

Suraj Ingole said: (May 20, 2018)  
Yes, option B is correct. As it is one of the field test of cement.

Abrar Ahmad said: (May 21, 2018)  
Option B is the correct information.

Dpk said: (May 28, 2018)  
B & D are correct I think.

Ray said: (May 30, 2018)  
How could be none of these?

Option B is correct answer.

Mukesh Khadse said: (Jun 11, 2018)  
Option B is the correct answer because it's a basic property of cement.

Ajay said: (Jun 23, 2018)  
The correct answer must be "B". Because cement should feel cool when the hand is thrust in the bag.

Manish Thakur said: (Aug 1, 2018)  
Option B is Correct.

Vishant Goyal said: (Aug 13, 2018)  
B and D is the right answer.

Aniruddh said: (Sep 6, 2018)  
B & D both correct, D says it should not float which is true.

Nil Kamal said: (Oct 7, 2018)  
The answer should be all of these because A,B,C, & D all are field test on cement.

1. DATE OF PACKING:
Date of manufacture should be seen on the bag. It is important because the strength of cement reduces with age.

2. COLOUR:
The cement should be uniform in colour. In general the colour of cement is grey with a light greenish shade. The colour of cement gives an indication of excess lime or clay and the degree of burning.

3. RUBBING:
Take a pinch of cement between fingers and rub it. It should feel smooth while rubbing. If it is rough, that means adulteration with sand.

4. HAND INSERTION:
Thrust your hand into the cement bag and it should give cool feeling. It indicates that no hydration reaction is taking place in the bag.

5. FLOAT TEST:
Throw a small quantity of cement in a bucket of water. It should sink and should not float on the surface.

6. SMELL TEST:
Take a pinch of cement and smell it. If the cement contains too much of pounded clay and silt as an adulterant, the paste will give an earthy smell.

7. PRESENCE OF LUMPS:
Open the bag and see that lumps should not be present in the bag. It will ensure that no setting has taken place.

8. SHAPE TEST:
Take 100g of cement and make a stiff paste. Prepare a cake with sharp edges and put on the glass plate. Immerse this plate in water. Observe that the shape shouldn't get disturbed while settling. It should be able to set and attain strength. Cement is capable of setting under water also and that is why it is also called 'Hydraulic Cement'.

Deepak Shukla said: (Oct 17, 2018)  
As per my knowledge, both B & D is correct.

Tulsi Jeena said: (Nov 25, 2018)  
According to me, both option B&D is correct.

Ram said: (Jun 4, 2019)  
I too agree it's both B and D.

Rana said: (Jun 18, 2019)  
Option E is correct, because feels hot by thrusting hand in cement bag.

Dinesh Suthar said: (Jul 15, 2019)  
Option B is the right answer.

Er Asad Khan said: (Sep 3, 2019)  
I think B is the correct answer.

Majeed said: (Feb 29, 2020)  
(a) The color of cement is uniformly greenish-grey.

(b) A handful of cement, thrown into a bucket of water should float for some time before it sinks.

(c) Rubbed in between fingers it feels smooth.

(d) A hand is thrust into a bag of cement it feels cool.

Gaurav said: (Mar 20, 2020)  
B is correct in a million answers.

Pawan Pandey said: (Apr 20, 2020)  
B is the correct answer.

Manav Sumara said: (Sep 1, 2020)  
Good explanation, Thanks @Nil Kamal.

Noorsaba said: (Jan 21, 2021)  
Only option B is correct because it's a physical property of OPC.

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