AE-JE Foundation CE: Building Materials Quiz 3 for AE & JE Exams Exams

Question 1

Which of the following statements is/are not correct as per the requirements specified by I.S.: 383-1970 for an ideal aggregate used for manufacturing concrete?

a. It should be hard, strong and durable

b. It should contain flaky and elongated pieces.

c. It should be dense, clear and free from any coating

d. It should consist of natural stones, gravels and sand.

Question 2

Which of the following statements describe(s) limitations(s) of concrete technology?

a. Availability of concrete ingredients easily.

b. Due to low tensile strength. Concrete is required to be reinforced to avoid cracks.

c. Monolithic character gives between appearance.

d. The property of concrete possess high compressive strength.

Question 3

.........is used in concrete to provide economy in the cost of material. It is used as filler only and do not react with cement and water.

Question 4

............is an engineering material that contains cement, polymers, and glass fibres.

Question 5

Statement (I): Coarser the particles, less is optimum moisture content

Statement (II): The specific surface area of coarser particle is less.

Question 6

On which of the following is the working principle of concrete hammer for non-destructive test based?

Question 7

Consider the following statements about the air entraining admixture in concrete:
1) Improve workability
2) Improve durability
3) Reduce segregation during placing
4) Decrease concrete density
Which of these statements are correct?

Question 8

Consider the following statements regarding cement concrete:
1) Bleeding indicates deficiency of coarser materials in the mix.
2) Segregation generally indicates poor aggregate grading.
Which of these statements is/are correct?

Question 9

Consider following statements about ‘Guniting’

1) It is method of repairing concrete work

2) Gunite is a mixture of cement: sand in proportion 1:3

3) Cement sand mixture is deposited on the existing concrete surface under a pressure of 10-12 kg/cm²

Correct statement(s)/are:

Question 10

Consider the following statements concerning
‘elasticity of concrete’.
1) Stress-strain behaviour of concrete is a straight line up to 10% of ultimate stress.
2) Strain determination is obtained from tangent modulus.
3) Modulus of elasticity of concrete is also called as secant modulus.
Which of the above statements are correct?