Concrete Technology, Question Paper of Civil Engineering 4th Semester, Download Question Paper 11

S .B. Roll no _____

CONCRETE TECHNOLOGY

4^th Exam / civil / 5107/ May’10

Duration 3 hrs

Section – A

1.     Fill in the blanks

a.     The process of carrying the concrete mix form place of its mixing to final position of deposition is called_____

b.     The leveling operation that removes pumps and hollow and give a uniform concrete surface is called ________

c.      Any operation of concreting done at a temperature below ____ is known as cold weather concreting.

d.     Workability in the combination of homogeneity and _____

e.      A concrete which has a tendency to segregate will be ______

f.       The concrete mix which does not give smooth surface with a certain amount of water is called as ____

g.     Compressive s right in the resistance of concrete to _______

h.     The art of combining two or more size of    aggregates to get specified grading in known as

i.       Standard consistency can be measured by using ________

j.       The mortar fills the void in coarse aggregate to form ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­_______

Section –B

Note : Attempt any ten questions

2.     Give the uses of concrete in comparison to other building materials.

3.     What are the deleterious materials in aggregate?

4.     What is bulk density? Give its type

5.     Why aggregates are the important factors affectivity the workability ?

6.     Why does workability decrease with time?

7.     Explain the causes of segregation.

8.     Give the factors affecting durability

9.     Give the definition of

a.     Admixture

b.     Plasticizer

10.                        What are the application of fibre reinforced concrete ?

11.                        Explain the methods used for under water concreting

12.                        Why excessive compaction is not good for concrete ?

13.                        What are the methods of repairing cracks and holes?

14.                        What do you mean by honey combing

Section –C

Note : Attempt any three questions

1.       

a.     What is ready mixed concrete ?

b.     What is meant by grading of aggregates? What is the effect of grading on the quality of concrete ?

2.       

a.     What is water cement ratio? What is its importance in concrete strength ?

b.     What is the  purposes of using admixtures in concrete?

3.     Describe in detail Vee-Bee consist meter test to determine workability of concrete .

4.      

a.     What is cold weather concreting?

b.     What are he effects of storage on strength

5.     How will you cure the repaired work?

6.     What is the necessity of providing joints in concrete.