Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 1 (Q.No. 23)
23.
The following proportion of the ingredients of concrete mix, is not in conformation to arbitrary method of proportioning
1 : 1 : 2
1 : 2 : 4
1 : 3 : 6
1 : 2 : 8
1 : 4 : 10
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
24 comments Page 2 of 3.

Rohit said:   8 years ago
I think both D and E are correct.

Varsha deshmukh said:   8 years ago
Both D and E is correct.

Arun.varada said:   1 decade ago
Because we did not seen any where 1:4:10 in our code books.

Samm said:   9 years ago
1:2:8 is the wrong answer because the ratio of fine aggregate to coarse aggregate, in this case, 1 : 4 but usual range of fine aggregate to coarse aggregate should be within 1 : 1.5 to 1 : 2.5.

Md samsuzzaman said:   9 years ago
1 : 2 : 8 & 1 : 4 : 10 these are wrong because does not satisfy the general relation 1 : n : 2n.

Bamlaku said:   10 years ago
Thank you very much for the explanation, but what about ACI METHOD?

Rajkumar Nayak said:   1 decade ago
For this, methods of proportioning is applicable and given by 1:n:2n.

Santosh said:   1 decade ago
Answer is both D & E because according to arbitrary method of proportioning. The proportioning should be 1:n:2n.

Jayesh said:   1 decade ago
@S.Raghuraman Sir.

Can you please give details as on how we should not encourage 1:2:8 & 1:4:10 mixes in the field and how they would develop honey comb and instability in strength.

Sarang said:   1 decade ago
Because it not satisfying the 1:n:2n. For arbitrary method.


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