# 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

Discussion:

22 comments Page 1 of 3.
Lokesh said:
2 years ago

1:2:8 is also the wrong proportion.

(1)

Shahzeb said:
2 years ago

1:2:8 is also incorrect. Am I right? Anyone explain about it.

(1)

OPSC AEE said:
3 years ago

@Vijayan.

7days - 60%.

14days - 90%.

28das - 99%.

7days - 60%.

14days - 90%.

28das - 99%.

Vijayan said:
4 years ago

Anyone tell about the strength % of concrete attain @28 days.

(1)

Bhavin Vaghani said:
4 years ago

Fine aggregate:cource aggregate = n : 2n.

This relation not satisfied by 1 : 4 : 10.

This relation not satisfied by 1 : 4 : 10.

SumanT said:
4 years ago

Arbitrary Method of proportioning of concrete:.

The general expression for the proportions of cement, sand and coarse aggregate is 1 : n : 2n by volume. So, option C and D both are wrong.

The general expression for the proportions of cement, sand and coarse aggregate is 1 : n : 2n by volume. So, option C and D both are wrong.

Nash said:
4 years ago

The option F is correct None of these.

1:1:2 - M25.

1:2:4 - M15.

1:3:6 - M10.

1:2:8 - Wrong proportion, it should be 1:4:8 for M7.5.

1:4:10 - Wrong Proportion, it should be 1:5:10 for M5.

1:1:2 - M25.

1:2:4 - M15.

1:3:6 - M10.

1:2:8 - Wrong proportion, it should be 1:4:8 for M7.5.

1:4:10 - Wrong Proportion, it should be 1:5:10 for M5.

(1)

Rohit said:
5 years ago

I think both D and E are correct.

Varsha deshmukh said:
5 years ago

Both D and E is correct.

Ashar Jami said:
5 years ago

I think both D & E are correct answer because according to arbitrary method of proportioning. The proportioning should be 1:n:2n.

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