The property of the ingredients to separate from each other while placing the concrete is called____________?

Related Mcqs:

1. The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called________________?

   A. segregation
   B. bleeding
   C. bulking
   D. creep

2. Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is_____________?

   A. M15
   B. M20
   C. M 10
   D. M25

3. Approximate value of shrinkage strain in concrete, is________________?

   A. 0.003
   B. 0.0003
   C. 0.00003
   D. 0.03

4. Workability of concrete is directly proportional to________________?

   A. aggregate cement ratio
   B. time of transit
   C. grading of the aggregate
   D. all of above

5. Air entrainment in the concrete increases________________?

   A. workability
   B. strength
   C. the effects of temperature variations
   D. the unit weight

6. Workability of concrete is inversely pro¬portional to______________?

   A. time of transit
   B. ‘vater-cement ratio
   C. the air in the mix
   D. size of aggregate

7. 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

8. For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be________________?

   A. 0.75-0.80
   B. 0.80-0.85
   C. 0.85 – 0.92
   D. above 0.92

9. If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to__________________?

   A. xv
   B. xc
   C. xv – TC
   D. Tv + Tc

10. Shrinkage of concrete depends upon_____________?

    1. humidity of atmosphere
    2. passage of time
    3. stress
    The correct answer is?

    A. (1) and (2)
    B. (2)and (3)
    C. only (3)
    D. All (1), (2)and (3)