Consider the following for durability of well-graded concrete: 1. The environment 2. Cover to embedded reinforcement 3. Shape and size of concrete member Which of these are correct

1.  1 and 2 only

2.  1 and 3 only

3.  2 and 3 only

4.  1, 2 and 3

View Answer  
4
Correct Answer :

1, 2 and 3


Explanation :
No Explanation available for this question

Consider the following statements as regards rheology of concrete: 1. It deals with strength of concrete. 2. It deals with deformation in concrete. 3. It is the study of deformation and flow of concrete. 4. It deals with rate of shear and shear stress in concrete. Which of these statements are correct

1.  1, 2, 3 and 4

2.  3 and 4 only

3.  2 and 3 only

4.  1 and 2 only

View Answer  
4
Correct Answer :

1, 2, 3 and 4


Explanation :
No Explanation available for this question

If one intends to obtain the best workability of concrete, the preferred shape of aggregate is:

1.  Round

2.  Annular

3.  Triangular

4.  Flinty

View Answer  
4
Correct Answer :

Round


Explanation :
No Explanation available for this question

Consider the following statements: In a typical compression test with a cylindrical concrete specimen, failure is initiated by 1. Crushing in compression 2. Inclined shear failure 3. Longitudinal tensile cracks Which of these statements is/are correct

1.  1 only

2.  2 only

3.  3 only

4.  1, 2 and 3

View Answer  
4
Correct Answer :

2 only


Explanation :
No Explanation available for this question

According to the Indian Standard Specifications, concrete should be cured under a humidity of:

1.  90%

2.  80%

3.  70%

4.  60%

View Answer  
4
Correct Answer :

90\%


Explanation :
No Explanation available for this question

Consider the following statements: 1. The compressive strength of concrete decreases with increase in water-cement ratio of the concrete mix. 2. Water is added to the concrete mix for hydration of cement and workability 3. Creep and shrinkage of concrete are independent of the water-cement ratio in the concrete mix. Which of these statements are correct

1.  1 and 2 only

2.  1 and 3 only

3.  2 and 3 only

4.  1, 2 and 3

View Answer  
4
Correct Answer :

1 and 2 only


Explanation :
No Explanation available for this question

Consider the following statements: Sand in cement mortar is used for 1. Increasing the strength 2. Reducing the shrinkage 3. Decreasing the surface area of the binding material 4. Decreasing the quantity of cement Which of these statements are correct

1.  1, 2 and 4

2.  1, 2 and 3

3.  1, 3 and 4

4.  2, 3 and 4

View Answer  
4
Correct Answer :

2, 3 and 4


Explanation :
No Explanation available for this question

The initial setting time of cement depends most on:

1.  Tricalcium aluminate

2.  Tricalcium silicate

3.  Tricalcium aluminoferrite

4.  Dicalcium silicate

View Answer  
4
Correct Answer :

Tricalcium silicate


Explanation :
No Explanation available for this question

Fineness of cement is measured in the units of

1.  Volume / mass

2.  Mass / volume

3.  Area / mass

4.  Mass / area

View Answer  
4
Correct Answer :

Area / mass


Explanation :
No Explanation available for this question

Consider the following statements: More than 6% magnesium oxide by weight in cement results in 1. High early strength and high heat generation 2. Less tendency towards the volume of change and formation of cracks Which of these statements is / are correct

1.  1 only

2.  2 only

3.  Neither 1 nor 2

4.  Both 1 and 2

View Answer  
4
Correct Answer :

Neither 1 nor 2


Explanation :
No Explanation available for this question
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