| 1. | Proper curing of cement concrete, is good for its ? | |
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volume stability
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strength
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wear resistance
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all of these
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Report Question| 2. | When vibrators are used for compaction, the consistency of concrete depends upon the ? | |
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type of mix
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placing conditions
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efficiency of vibrator
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all of these
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| 3. | The process of consolidating concrete mix after placing it in position is termed as ? | |
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curing
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wetting
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compaction
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none of these
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| 4. | The ratio of the volume of moist sand to the volume of dry sand is known as ? | |
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crushing value
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impact value
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bulking factor
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none of these
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| 5. | Weight batching is done by ? | |
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spring dial scale
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platform weighing machine
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portable weigh batchers
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all of these
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| 6. | The material having particle size varying from 0.002 to 0.06 mm is termed as ? | |
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silt
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clay
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sand
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none of these
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| 7. | If the water cement ratio is more, then the ? | |
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strength of concrete will be less
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durability of concrete will be less
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capillary voids will be more in the physical structure of hydrated cement
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all of the above
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| 8. | Which of the following statement is wrong ? | |
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If the height of pile exceeds 1.44 m, the cement bags should be arranged in header and stretcher fashion
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The cement bags should be rolled on the floor when it is taken out for use
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The strength of cement decreases with the passage of time
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none of the above
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| 9. | The percentage of water for making a cement paste of normal consistency varies from ? | |
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15 to 25%
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25 to 35%
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35 to 50%
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50 to 60%
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| 10. | With the moisture content of 5 to 10% by weight, the bulking of sand is increased by ? | |
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20%
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30%
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40%
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50%
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