Concrete Technology Mock Test 4

10%

Question 1 of 10

1. Silica fume is ______________

Neutral

Absent in concrete

More reactive

Less reactive

Question 1 of 10

Question 2 of 10

2. Which one is not part of chemical and mineral admixtures?

Metakaoline

Curing compounds

GGBFS

Pumicites

Question 2 of 10

Question 3 of 10

3. Concrete placed in cold weather will take ____________ time to gain strength.

Less

Equal to hot weather

Question 3 of 10

Question 4 of 10

4. How to improve the workability of concrete.

Increase the w/c ratio

Decrease the size of aggregates

Decrease the w/c ratio

Don’t mix it for longer time

Question 4 of 10

Question 5 of 10

5. Workability can be resolved __________

With not using of both plasticizers and super plasticizers

With use of plasticizers

With not using of plasticizers

With the use of both plasticizers and super plasticizers

Question 5 of 10

Question 6 of 10

6. What is accelerator?

Which delays the initial set of concrete

Which speed up the final set of concrete

Which delays the final set of concrete

Which speed up the initial set of concrete

Question 6 of 10

Question 7 of 10

7. If compaction factor of concrete is .90, then workability is ____________

High

Medium

Very low

Low

Question 7 of 10

Question 8 of 10

8. What is the moisture content in slurry for wet process?

35-50%

100%

40-45%

12%

Question 8 of 10

Question 9 of 10

9. Air entrainment in concrete increases ___________

Strength

Workability

The unit weight

The effect of temp variations

Question 9 of 10

Question 10 of 10

10. This image has _________

High w/c ratio

Low w/c ratio

High Strength

Low porosity

Question 10 of 10