| 1. | Low percentage of tricalcium silicate and high percentage of dicalcium silicate in cement salts in ? | |
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rapid hardening
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high early strength
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high heat generation
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none of these
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Report Question| 2. | In designing a ware-house, it is assumed that ? | |
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each bag contains 50 kg of cement
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floor area occupied by one bag of cement is 0.3 m²
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height of each cement bag containing 35 litres of cement is 0.18 m
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all of the above
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| 3. | The chemical ingredient of cement which provides quick setting property to the cement is ? | |
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lime
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silica
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alumina
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iron oxide
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| 4. | According to Indian standard specifications for the compressive strength test of cement, the cement and standard sand mortar in the ratio of.................. is used ? | |
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1:1
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1:2
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1:3
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1:4
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| 5. | For continuous transportation of concrete, the method used is ? | |
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transport of concrete by pans
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transport of concrete by wheel barrows
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transport of concrete by belt concrete conveyors
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transport of concrete by pumps
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| 6. | The function of aggregates in concrete is to serve as ? | |
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binding material
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filler
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catalyst
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all of these
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| 7. | The sound absorption coefficient of light weight concrete is nearly ........... than that of ordinary concrete ? | |
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twice
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three times
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four times
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six times
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| 8. | The number of bags of cement required per cubic metre of 1:2:4 concrete will be approximately ? | |
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2 to 3
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3 to 4
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4 to 5
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5 to 6
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| 9. | The breaking up of cohesion in a mass of concrete is called ? | |
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workability
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bleeding
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segregation
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creep
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| 10. | The removal of excess air after placing concrete helps in increasing the strength of concrete by ? | |
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15 to 20%
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20 to 30%
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30 to 50%
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50 to 70%
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