# Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 1 (Q.No. 46)
46.
Internal friction between the ingredients of concrete, is decreased by using
less water
fine aggregates
rich mix
more water and coarse aggregates
none of these.
Explanation:
No answer description is available. Let's discuss.
Discussion:
16 comments Page 1 of 2.

How can we assume that by increasing coarse aggregates can result in decrease in internal friction?

But if we increase fine aggregates we can.

ABBASUDDIN MALLICK said:   1 decade ago
I'm also agree with hassan. How can we assume that by increasing coarse aggregates can result in decrease in internal friction?

But if we increase fine aggregates we can.

Abhi said:   9 years ago
I think it is C. Rich mix may reduce friction.

Rajendran.p said:   9 years ago
If we adding coarse aggregate, the surface area will less so we can reduce the friction.

Sivaraja said:   9 years ago
Lubrication system will reduced the friction adding fine aggregate and rich mix will reduced the friction.

Dimpi said:   9 years ago
If we increase water bleeding will happen. If we increase CA Honeycomb will occur because infront of that FA will decrease. The main moto of using the homogeneous (Coarse void should be filled by fine aggregate & fine aggregate void filled be Cement paste) mix proper proportion of aggregate.

So he answer is rich mix, which covers the surface of aggregate & reduce the internal friction.

Apcivilian said:   8 years ago

If we use C. A and more water then surface area will decrease and less interlocking between particles!

The Same condition occur when we use more water content, due to lubrication internal friction will reduce!

Ankit Jaiswal said:   7 years ago
How, if we increase water so there will be less work ability and slump value. This is not a way to reduce internal friction we must use some special ingredients.

Lok Bdr Rokaya said:   7 years ago
Answer is Right. It is based on surface area.

Laxmannaik said:   7 years ago
Option C is correct.

Rich mix will reduce friction.