## Civil Engineering MCQs for Concrete Technology Part 2

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According to IS Specification, the compressive strength of ordinary portland cement after three days should not be less than ______

According to IS Specification, the compressive strength of ordinary portland cement after three days should not be less than 16 Mpa

A minimum grade of reinforced concrete for mild exposure condition as per Indian standard code of practices is _____

_{20}

The minimum grade of reinforced concrete for mild exposure conditions as per the Indian standard code of practices is M_{20}

In general, the proportion of fine aggregate to coarse aggregates in the nominal concrete mix are _____

In general, the proportion of fine aggregate to coarse aggregates in the nominal concrete mix is 1:2

The minimum number of longitudinal bars in a circular column as per Indian standard is _____

The minimum number of longitudinal bars in a circular column as per Indian standard is 6

What would be the exit gradient for a permeable foundation in absence of the downstream pile?

Under which of the following conditions, maximum cross-drainage work is expected?

The characteristic strength of concrete is defined as that compressive strength below which is not more than

ANSWER = [B] 5% of results fail

The characteristic strength of concrete is

ANSWER = [B] lower than the average cube strength

The characteristic strength of M20 concrete is 20 MPa. What is the number of cubes having 28 days’ compressive strength greater than 20 MPa out of 100 cubes made with this concrete?

ANSWER = [B] 95

The characteristic strength of concrete mass is that value of strength below which not more than x percent of test results are expected to fall where x is equal to

ANSWER = [A] 5

What is the M25 concrete mix ratio?

ANSWER = [A] 1:1:2

What is the M20 concrete mix ratio?

ANSWER = [B] 1:1.5:3

What is the M15 concrete mix ratio?

ANSWER = [C] 1:2:4

What is the M10 concrete mix ratio?

ANSWER = [D] 1:3:6

Sheet piles are generally made of

ANSWER = [D] All the above

Correct answer for Sheet piles are generally made of is All the above