Physical requirement. 5.1 Fineness When tested for fineness by “Blains” air permeability analysis method (IS:4031,Part-2-1988) the specific surface of cement shall not be less than 2250 cm2/g(225m2/kg). For determination of fineness the fineness, by dry sieving (as per IS: 4031-Part-I 1988), the residue should not exceed 10%.
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Samples: Agreement, www.mpwrd.gov.in, Agreement