Concrete Technology Practice Test 6

1. From the below figure, what does B signify?

2. The philosophy of prescribing low ____________ cement to improve resistance to sulphate attack.

3. Strength of concrete increase with _________

4. The rate of creep generally _________ with the _________ of the size of aggregates.

5. The addition of a pozzolanic admixture such as fly ash reduces the ____________

6. Coefficient of thermal expansion of concrete is ________ coefficient of thermal expansion in aggregates.

7. However, fall of temperature and carbonation may also cause shrinkage.

8. For concrete exposed to a very aggressive environment the w/c should be lower than __________

9. Approximate ratio of the strength of the cement conc of 7 days to that of 28 days (2/3)?

10. The _________ the modulus of elasticity the _________ is the creep.