As compared to ordinary portland cement, use of pozzuolanic cement_______________?

Related Mcqs:

1. As compared to ordinary portland cement, high alumina cement has______________?

   A. higher initial setting time but lower final setting time
   B. lower initial setting time but higher final setting time
   C. higher initial and final setting times
   D. lower initial and final setting times

2. The percentage of voids in cement is approximately_______________?

   A. 25%
   B. 40%
   C. 60%
   D. 80%

3. Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is_______________?

   A. 28 liters
   B. 30 liters
   C. 32 liters
   D. 34 liters

4. In case of hand mixing of concrete, the extra cement to be added is__________________?

   A. 5%
   B. 10%
   C. 15%
   D. 20%

5. The compressive strength of 100 mm cube as compared to 150 mm cube is always_______________?

   A. less
   B. more
   C. equal
   D. none of the above

6. The strength of concrete after one year as compared to 28 days strength is about_______________?

   A. 10 to 15% more
   B. 15 to 20% more
   C. 20 to 25% more
   D. 25 to 50% more

7. The load carrying capacity of a helically reinforced column as compared to that of a tied column is about________________?

   A. 5% less
   B. 10% less
   C. 5% more
   D. 10% more

8. Increase in the moisture content in concrete_________________?

   A. reduces the strength
   B. increases the strength
   C. does not change the strength
   D. all of the above

9. The diameter of ties in a column should be_______________?

   A. more than or equal to one fourth of diameter of main bar
   B. more than or equal to 5 mm
   C. more than 5 mm but less than one-fourth of diameter of main bar
   D. more than 5 mm and also more than one-fourth of diameter of main bar

10. In prestressed concrete______________?

    A. forces of tension and compression change but lever arm remains unchanged
    B. forces of tension and compressions remain unchanged but lever arm changes with the moment
    C. both forces of tension and compres-sion as well as lever arm change
    D. both forces of tension and compres-sion as well as lever arm remain unchanged