Chapter:

Special-Concrete-and-Concreting-Methods

1. Harshness in concrete is due to excess of _________


2. Concentration of water-soluble sulphates in water _______ ppm for severe exposure.


3. Low w/c ratio helps to control suphate attack.


4. Strength of concrete increase with _____


5. Concentration of water-soluble sulphates in water _______ ppm for mild exposure.


6. Reinforced cement concrete is equally strong in taking ______


7. Durability of concrete is proportional to _____


8. Lowering of ________ might also help, since this would reduce amount of CH that forms.


9. Strength of concrete is proportional to __________


10. The separation of water or water-cement mixture from freshly mixed concrete is known as bleeding.