Design of Concrete Structures-Data Intensity 1 Multiple Questions and Answers.
Exercise Questions ::
Design of Concrete Structures
6. | As compared to ordinary portland cement, use of pozzuolanic cement? |
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| A. | reduces workability |
| B. | increases bleeding |
| C. | increases shrinkage |
| D. | increases strength |
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Published by:Michael Daani
7. | According to IS : 456 -1978, the modulus of elasticity of concrete Ec (in N/mm2) can be taken as? |
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| A. | Ec = = 5700 |
| B. | Ec = = 570 |
| C. | Ec = = 5700fck |
| D. | Ec = where fck N/mm2 = 700 is the characteristic strength in |
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Published by:Michael Daani
8. | The most commonly used admixture which prolongs the setting and hardening time is_______? |
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| A. | gypsum |
| B. | calcium chloride |
| C. | sodium silicate |
| D. | all of the above |
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Published by:Michael Daani
9. | The strength of concrete after one year as compared to 28 days strength is about____? |
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| A. | 10 to 15% more |
| B. | 15 to 20% more |
| C. | 20 to 25% more |
| D. | 25 to 50% more |
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Published by:Michael Daani
10. | Admixtures which cause early setting, and hardening of concrete are called______? |
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| A. | workability admixtures |
| B. | accelerators |
| C. | retarders |
| D. | air entraining agents |
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Published by:Michael Daani
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