MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Concrete Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When the concrete in fresh stage is exposed to freeze before certain pre-hardening period, compressive strength may get __________ |
| A. | Increased to 50% |
| B. | Decreased to 50% |
| C. | Increased to 25% |
| D. | Decreased to 25% |
| Answer» C. Increased to 25% | |
| 2. |
Large temperature differentials within the concrete member may promote __________ |
| A. | Elastic shrinkage |
| B. | Cracking |
| C. | High workability |
| D. | Good strength |
| Answer» C. High workability | |
| 3. |
If concrete is exposed to repeated freezing and thawing after the final set, the final qualities of the concrete may also be __________ |
| A. | Impair |
| B. | Aid |
| C. | Improve |
| D. | Extend |
| Answer» B. Aid | |
| 4. |
Why the time period for removal of form work has to be increased. |
| A. | The development of strength of concrete is retarded compared with development at normal temperature |
| B. | The development of strength of concrete is accelerate compared with development at normal temperature |
| C. | The development of strength of concrete is advanced compared with development at normal temperature |
| D. | The development of strength of concrete is precocious compared with development at normal temperature |
| Answer» B. The development of strength of concrete is accelerate compared with development at normal temperature | |
| 5. |
IS: 7861 part-2 deals with __________ |
| A. | Hot weathering concrete |
| B. | Cold weathering concrete |
| C. | Air entertained concrete |
| D. | OPC |
| Answer» C. Air entertained concrete | |
| 6. |
Concrete is not recommended to be placed at a temperature below __________oC. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 7. |
The addition of glass fibers are in the range of __________ |
| A. | 0-6% |
| B. | 10% |
| C. | 15-20% |
| D. | 20%-25% |
| Answer» B. 10% | |
| 8. |
Steel fibers helps in the enhancement of its properties. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Higher resin dosage is recommended when using ________ |
| A. | Coarse aggregate |
| B. | Fine aggregates |
| C. | All in one aggregates |
| D. | More cement |
| Answer» C. All in one aggregates | |
| 10. |
Which one is not the polymeric resin? |
| A. | Polyester resin |
| B. | Epoxy resin |
| C. | Vinyl ester resin |
| D. | Sulphates |
| Answer» E. | |
| 11. |
The moisture content of the aggregate shall not exceed from ____________ |
| A. | .1% .5% |
| B. | 1% 55 |
| C. | 10% 50% |
| D. | 15% |
| Answer» B. 1% 55 | |