Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 4 (Q.No. 17)
17.
A flaky aggregate is said to be elongated if its length is
equal to the mean size
twice the mean size
thrice the mean size
four times the mean size
five times the mean size.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
33 comments Page 2 of 4.

Roy said:   8 years ago
Given answer is right according to SSC JE 2008 answer key. And the reason behind it according to me, the flaky aggregate is considered to their MEAN dimension and elongated aggregate is considered to their GREATER dimension.

Pradip oli said:   4 years ago
Flaky aggregate least dimension = 3/5 of the mean dimension.
= 0.6times
so flaky aggregate elongated to = 0.6 * 3 =1.8.

(so answer is thrice the mean size).

Kanemozhe said:   8 years ago
Option B is correct because for flaky aggregates the size is considered for the width, not the length. Only when it comes to elongated aggregates, length is taken into account. And the question is regarding the length.

Viru kapoor said:   7 years ago
Option C is absolutely correct.

Flaky aggregates 3/5 = 0.6.
Elongated aggregates 9/5 = 1.8.
Any Flaky aggregate is said to be elongated if (0.6*3 = 1.8)
Which Means thrice.

Darshan h a said:   9 years ago
Aggregate is said to be flaky if its size is more than 9/5 of their mean size. i.e 1.8 times of their mean size which is approximately taken as 2 times in this problem.

Sandeep Suthar Hisar said:   7 years ago
Twice is the Correct answer because mean size is not 0.6 it is the length but we have calculated with respect to mean size so 9/5 is the correct answer.

Gaurav said:   5 years ago
Flaky aggregate .6 times mean dimensions.
Elongated aggregate 1.8 times mean dimensions.
So, Flaky aggregate is 3 times of elongated aggregate.

RUPESH said:   1 decade ago
Flaky = 3/5*mean, i.e mean = 5/3*flaky.

Elongated = 9/5*mean.

= (9/5)*(5/3)*flaky = 3*flaky.

Hence, answer is thrice.

Santosh said:   4 years ago
Mean of flaky aggregate is (3+5) /2=4.
Ellongated agg. 5/8.
So elongated length 8 but mean of flaky 4.

Then 2 times.

Narayan ch. Saha said:   6 years ago
Given answer is correct. Because there is no relation b/w flaky and elongation.

So 1.8~2 times.


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