MCQOPTIONS
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MCQOPTIONS
This section includes 5 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. |
The exposure of conventional mixing in open bowl is about ___________ ppm in the breathing zone. |
| A. | 20 |
| B. | 40 |
| C. | 50 |
| D. | 10 |
| Answer» E. | |
| 2. |
Vacuum mixing systems reduce the exposure by _________ %. |
| A. | 20 |
| B. | 40 |
| C. | 50 |
| D. | 10 |
| Answer» D. 10 | |
| 3. |
After vacuum mixing, the volumetric shrinkage can be raised from 3 5% to __________ % in different cements. |
| A. | 1-2 |
| B. | 3-5 |
| C. | 5-7 |
| D. | 6-8 |
| Answer» D. 6-8 | |
| 4. |
Cement has ________ % volumetric shrinkage after curing. |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» B. 6 | |
| 5. |
Concrete is not recommended to be placed at a temperature above _________oC. |
| A. | 20 |
| B. | 30 |
| C. | 40 |
| D. | 50 |
| Answer» D. 50 | |