| 1. | Initial setting time of ordinary Portland cement is ? | |
|
15 min
|
||
|
30 min
|
||
|
60 min
|
||
|
10h
|
||
View Answer
Discuss in Forum
Report Question| 2. | The gypsum is added to the cement for ? | |
|
providing high strength to the cement
|
||
|
controlling the initial setting time of cement
|
||
|
lowering the clinkering temperature
|
||
|
all of the above
|
||
| 3. | A suitable admixture added at the time of preparing the concrete ? | |
|
water-proof
|
||
|
acid proof
|
||
|
highly strong
|
||
|
all of these
|
||
| 4. | The cement concrete prepared by mixing aluminium in it, is called ? | |
|
air-entrained concrete
|
||
|
cellular concrete
|
||
|
aerated concrete
|
||
|
any one of these
|
||
| 5. | The type of lime used in lime concrete is ? | |
|
fat lime
|
||
|
poor lime
|
||
|
slaked lime
|
||
|
hydraulic lime
|
||
| 6. | The aggregate is said to be flaky when ? | |
|
its least dimension is three-fifth of its mean dimension
|
||
|
its least dimension is equal to its mean dimension
|
||
|
its length is equal to its mean dimension
|
||
|
its length is equal to 1.8 times its mean dimension
|
||
| 7. | The knowledge of a standard consistency of a cement paste is essential to perform ? | |
|
setting time test
|
||
|
soundness test
|
||
|
compressive strength test
|
||
|
all of these
|
||
| 8. | The aggregate which pass through 75 mm IS sieve and entirely retain on 4.75 mm IS sieve is known as ? | |
|
cyclopean aggregate
|
||
|
coarse aggregate
|
||
|
fine aggregate
|
||
|
all-in-aggregate
|
||
| 9. | Which of the following statement is correct? ? | |
|
Sulphate resisting cement is particularly used for canal lining.
|
||
|
Low heat cement should not be used for thin concrete structures
|
||
|
Rapid hardening
|
||
|
all of the above
|
||
| 10. | Rapid hardening cement is used ? | |
|
where high early strength is desired
|
||
|
where form work is to be removed as early as possible
|
||
|
for constructing road pavements
|
||
|
all of the above
|
||