44-2025-Dhidamana Balam


Week No. / Year of Manufacturing: /	Date:

S.No	Parameter	Unit	Requirement as per IS 1489 (Part-I)
1	Chemical requirements
	Loss on ignition	%	5.0 (max)
	Magnesia (MgO)	%	6.0 (max)
	Sulphuric anhydride (SO₃)	%	3.5 (max)
	Chloride content (Cl)	%	0.1 (max)
	Insoluble residue (IR)	%	X + [4(100 – X) / 100] (max) X * 0.6 (min) (X = Fly ash addition %)
2	Physical requirements
	Normal Consistency (NC)	%	–
	Fineness (Blaines)	m²/kg	300 (min)
	Le-Chatelier expansion	mm	10 (max)
	Autoclave expansion	%	0.8 (max)
	Setting time – Initial	minutes	30 (min)
	Setting time – Final	minutes	600 (max)
	Compression strength (3 days)	MPa	16 (min)
	Compression strength (7 days)	MPa	22 (min)
	Compression strength (28 days)	MPa	33 (min)
	Drying shrinkage	%	0.15 (max)
3	Fly ash addition	%	15 – 35
Notes: X = declared percentage of fly ash in the Portland Pozzolana Cement (fly ash based). The above cement complies with requirements of IS : 1489 (Part 1): 2015 for Portland Pozzolana Cement. RA = Result Awaited. Temperature (°C) and relative humidity (%) during testing shall be maintained as 27±2°C & ≥ 65% respectively.