Portland cement			32.5		32.5R
Items		Units	National	Internal	National	Internal
Sample size		Kg	/	5.0	/	5.3
SO3		%	≤3.5	2.4	≤3.5	2.5
MgO		%	≤6.0	1.1	≤6.0	1.4
Cl		%	≤0.06	0.01	≤0.06	0.01
Fineness (residue on sieve, 80µm)		%	≤10.0	0.2	≤10.0	0.2
Time	Initial	H:Min	≥0:45	4:50	≥45	228
	Final	H:Min	≤10:00	5:45	≤600	368
Soundness pat test			/	past	/	past
Bending strength	3d	MPa	≥2.5	4.8	≥3.5	4.8
	28d	MPa	≥5.5	7.3	≥5.5	7.5
Compressive strength	3d	MPa	≥10.0	25.4	≥15.0	22.8
	28d	MPa	≥32.5	42.2	≥32.5	43.6