The property of cement that indicates particle size of cement and specific surface area is called fineness of cement. Rate of hydration greatly depend on fineness of cement and a for a rapid development of strength, high fineness is required.Here we can list the importance of cement fineness test:
1) It affect hydration rate of cement and it turns into strength. Increasing fineness increase the rate of hydration, high strength and high heat generation.
2) Bleeding can be reduced by increasing fineness.However increasing fineness demands more water for workability resulting a higher possibility of dry shrinkage.
3) The smaller the particle size the greater the surface area to volume ratio, thus the more area available for water -cement interaction per unit volume.
Importance of soundness test of cement
4) It also used to check the proper grinding of cement and measure the surface area of the cement particles per unit mass.
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| Cement fineness test |
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