Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 4 (Q.No. 2)
2.
If aggregates completely pass through a sieve of size 75 mm and are retained on a sieve of size 60 mm, the particular aggregate will be flaky if its minimum dimension is less than
20.5 mm
30.5 mm
40.5 mm
50.5 mm
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 2 of 2.

G.V.S. Bhargav said:   1 decade ago
Flaky aggregate is a aggregate having a size less than 60% of average size of the two aggregate.

So now (75+60)/2 = 67.5.

Now 60% of 67.5 is,

That is 67.5*(60/100) = 40.5.

Yasir said:   7 years ago
Flakiness means 60%(3/5) of avg size of particles.

Abbas khan said:   4 years ago
If an aggregate is rounded or angular then what value will be use about dimension? Please explain.

Agha Bilal said:   5 months ago
Thanks for the correct explanation. @Lalit

Flaky aggregate = 3/5 of the mean dimension.
= (3/5) *{(75+60) /2}.
= (3/5) *(67.5).
= 40.5mm.


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