Question
Download Solution PDFWhich of the following statements is INCORRECT regarding the fineness of cement?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Fineness of Cement
The rate of hydration & the heat evolved increases with the fineness of cement, but the total amount of heat liberated is unaffected by fineness.
Other properties of fine cement over coarse cement:
- Fineness cement leads to a stronger reaction with alkali reaction aggregate and is more liable to suffer from shrinkage cracking than coarse cement.
- Fine cement will show a faster rate of hardening than coarse cement.
- The unit of the fineness of cement is cm2/gram
- Fine cement shows the same setting time as coarse cement.
- An increase in the fineness of cement increases the drying shrinkage of concrete.
- Fine cement bleeds less than coarse cement.
- The fineness of cement can be tested by determining the specific surface of cement using an air permeability apparatus.
- The fineness of grinding is important to the workability of concrete mixes.
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