MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Pavement Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For how long does the dormancy stage in the hydration of cement last? |
| A. | 2-4 hours |
| B. | Years |
| C. | 15 minutes |
| D. | 30 minutes |
| Answer» B. Years | |
| 2. |
Which of the below sieve designation and the percentage by weight passing the sieve pairs are matched incorrectly? |
| A. | 31.5 mm 100 |
| B. | 9.5 mm 30 to 55 |
| C. | 600 micron 8 to 30 |
| D. | 75 micron 0 to 5 |
| Answer» C. 600 micron 8 to 30 | |
| 3. |
Plastic shrinkage is also known as drying shrinkage. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
A concrete cube of 150 mm was subjected to a compression test. The load at failure was found to be 700 kN. What would be the tensile strength of concrete and can it be used for PQC? |
| A. | 3.9, yes |
| B. | 4.42, yes |
| C. | 3.9, no |
| D. | 4.42, no |
| Answer» D. 4.42, no | |
| 5. |
Which of the below mineral admixtures can be used up to 50% by weight of cement? |
| A. | Lime |
| B. | GBFS |
| C. | Silica fume |
| D. | Fly ash |
| Answer» C. Silica fume | |
| 6. |
Clay lumps up to 2% are allowed in fine aggregates used for the pavement concrete. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
The relationship between the strength gain, time and temperature of the concrete mix is called ______ |
| A. | Setting |
| B. | Maturity |
| C. | Creep |
| D. | Curing |
| Answer» C. Creep | |
| 8. |
______ admixture is used to help the pavement withstand the freezing and thawing cycle. |
| A. | Retarders |
| B. | Plasticisers |
| C. | Accelerators |
| D. | Air-entraining |
| Answer» E. | |
| 9. |
Concrete should be placed and finished during the ______ stage. |
| A. | Dormant |
| B. | Cooling |
| C. | Hydrating |
| D. | Mixing |
| Answer» B. Cooling | |
| 10. |
Which of the below methods is the best method to compute the modulus of elasticity? |
| A. | Initial tangent modulus |
| B. | Secant modulus |
| C. | Tangent modulus |
| D. | Initial secant modulus |
| Answer» C. Tangent modulus | |
| 11. |
What will be the tensile strength of a concrete specimen of grade M30? |
| A. | 3.83 N/mm<sup>2</sup> |
| B. | 38.33 N/mm<sup>2</sup> |
| C. | 0.38 N/mm<sup>2</sup> |
| D. | 0.038 N/mm<sup>2</sup> |
| Answer» B. 38.33 N/mm<sup>2</sup> | |