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:
23 comments Page 2 of 3.
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.
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.
Ashar Jami said:
8 years ago
I think both D & E are correct answer because according to arbitrary method of proportioning. The proportioning should be 1:n:2n.
Varsha deshmukh said:
8 years ago
Both D and E is correct.
Rohit said:
7 years ago
I think both D and E are correct.
Nash said:
7 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.
(6)
SumanT said:
7 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.
(2)
Bhavin Vaghani said:
6 years ago
Fine aggregate:cource aggregate = n : 2n.
This relation not satisfied by 1 : 4 : 10.
This relation not satisfied by 1 : 4 : 10.
(1)
Vijayan said:
6 years ago
Anyone tell about the strength % of concrete attain @28 days.
(2)
OPSC AEE said:
6 years ago
@Vijayan.
7days - 60%.
14days - 90%.
28das - 99%.
7days - 60%.
14days - 90%.
28das - 99%.
(2)
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