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For the following questions answer them individually
How many types of chemical admixture are there?
2
3
4
5
Which component of concrete gives it desired compressive strength?
Water
Cement
Aggregates
Admixture
What is the maximum height through which concrete can be poured?
0.1 to 0.6 m
0.8 to 1 m
0.5 m
2 m
Which is the best method for curing of concrete flat surfaces?
Spraying water
Placing wet gunny bags
Stagnating water
None of these
The accumulation of water on outer surface of concrete is:
Transpiration
Bleeding
Guttation
Ponding
Which admixture is used to improve workability of concrete?
Plasticizers
Metakaolin
Reducers
Accelerators
Higher the cement content,
Higher aggregates
Lower workability
Higher strength
Lower strength
Compaction factor for heavily reinforced section with vibration is:
< 0.75
0.75 - 0.85
0.85 - 0.92
> 0.92
If cylinder specimen is used to test compressive strength of concrete, equivalent cubes strength can be found using:
$$\frac{3}{4}^{th}$$ strength of cylinder
$$\frac{5}{4}^{th}$$ strength of cylinder
$$\frac{5}{6}^{th}$$ strength of cylinder
$$\frac{1}{4}^{th}$$ strength of cylinder
Which of the below is not a plaster type based on material?
Gypsum
Pozzolana
Lime
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