IT IS BASICALLY AN INDEX NUMBER THAT GIVES A GOOD IDEA
REGADING THE FINENESS OF SAND.IT IS ON THE BASIS OF FINESS
MODULUS THAT SAND HAS BEEN DIVIDED INTO Zones.THE F.M OF
SAND RANGES FROM 2.0-2.75(APP.)
Kindly furnish the relation between 7 days strength & 28
days compressive strength of Cement Concrete cubes. Can you
clarify whether the relation gets altered due to various
WATER-CEMENT ratios and type of cements?