. 2021 Jun 2;14(11):3025. doi: 10.3390/ma14113025

Table 1.

Properties of cements used in the study.

Characteristic	CEM I 52.5 R	CEM I 42.5 R	CEM III 42.5 N
Composition [%]
Portland clinker	95 $\div$ 100	95 $\div$ 100	35 $\div$ 64
Ground granulated blast furnace slag	-	-	36 $\div$ 65
Secondary components	0 $\div$ 5	0 $\div$ 5	0 $\div$ 5
Compressive strength [MPa]
2 days	36.2	29.0	14.8
28 days	63.6	56.9	58.3
Setting time (initial) [min]	170	184	201
Surface area (Blaine) [cm²/g]	4411	3717	4636
Chemical composition [%]
SO₃	2.93	2.93	2.70
Cl⁻	0.067	0.066	0.080
Loss on ignition	3.73	3.40	1.08
Insoluble residue	0.72	0.70	0.48
Heat of hydration (7 days) [J/g]	325 $\div$ 375	325 $\div$ 375	<270

The amount of gypsum in studied cements was <5% as required by European Standards.