Concrete Technology 4th Sem Civil 0512 May 2016 Diploma Paper

Concrete Technology CT 4th Sem Civil/0512/May 2016 Paper

                                                SECTION-A

Q1. Do as directed.     

1. Cement is used as Binder in cement.

2. The Portland cement was invented by Joseph Aspdin.

3. Water cement ratio is directly proportional to compressive strength of  strength of concrete.

4. Increase in water increase the workability.

5. To avoid segregation, height of drop of concrete should not exceed 5m

6. As per IS: 456-2000, minimum grade of concrete required for RCC work is M20

7. Cement is always batched by weight

8. Admixtures increase the durability of concrete.

9. The concreting which takes place in water is called underwater concreting

10. The weight of one bag of cement is 50kg

b) State true or false.

1. Strength of concrete increases with Time. (True)

2. Fineness of cement is determined with IS sieve 9. (True)

3. The water cement ratio increases with increase in quantity of Cement.(True)

4. In hardened concrete, cover to reinforcement can be measured with non-destructive Testing.(True)    

5. Concrete is strong in compression (True)