Concrete Technology Sheet 18
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1) Question.
Assertion A: Workability of fresh concrete increases with time.
Reason R: There is a loss of moisture in concrete with time.
Select your answer based on the coding system given below.
Answer. -
2) Question.
Amount of gypsum required to be added to the clinker depends on the following contents of cement
i) tricalcium silicate
ii) dicalcium silicate
iii) tricalcium aluminate
iv) alkali
The correct answer is
Answer. -
3) Question.
The bond strength between steel reinforcement and concrete os affected by
i) steel properties
ii) concrete properties
iii) shrinkage of concrete
The correct answer is
Answer. -
4) Question.
In a ring beam subjected to uniformly distributed load
(i) shear force at mid span is zero
(ii) shear force at mid span is maximum
(iii) torsion at mid span is zero
(iv) torsion at mid span is maximum
The correct answer is
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5) Question.
The sum of percentages of all deleterious materials in the aggregate shall not exceed -
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6) Question.
A moist aggregate is one -
Answer. -
7) Question.
An aggregate having all the pores filled with water but having dry surface is called -
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8) Question.
An aggregate which may contain some moisture in the pores but having dry surface is known as -
Answer. -
9) Question.
The value of bulk density of the aggregate depends upon -
Answer. -
10) Question.
The apparebt specific gravity of an aggregate is defined as -
Answer. -
11) Question.
Bulk specific gravity of an aggregate is defined as -
Answer. -
12) Question.
If the aggregate completely passes through a 50 mm sieve and retained on 40 mm sieve, then the particular aggregate is said to be flaky if its least dimension is less than -
Answer. -
13) Question.
The aggregate is said to be flaky when -
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14) Question.
The aggregates of ....... shape have maximum voids. -
Answer. -
15) Question.
The aggregates of ..... shape have minimum voids. -
Answer. -
16) Question.
The minimum particle size of fine aggregate is -
Answer. -
17) Question.
The minimum particle size of coarse aggregate is -
Answer. -
18) Question.
The aggregate which pass through 4.75 mm IS sieve and entirely retain on 75 micron IS sieve is called -
Answer. -
19) Question.
The maximum particle size of fine aggregate is -
Answer. -
20) Question.
The maximum particle size of coarse aggregate is -
Answer.
