CEM I 42,5 N – SR 3

CEM I 42.5 N SR-3 is a high sulphate resistant Portland cement; it is the result of the grinding of a specially selected high sulphate resisting clinker.

CEM I 42.5 N SR-3 is certified in accordance with the UNE-EN 197-1 standard, with the certificate of consistent performance No. 0099/CPR/A33/1160 issued by AENOR and complies with the requirements of the Tunisian standard NT 47.01.


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Delivery
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Description

Cement Features

Typical values Specifications according to standard
Clinker (%)
95–97 >95
CHEMICAL
Loss on ignition 2.50 ≤3
Insoluble residue 0.6 ≤0.75 %
Chlorides 0.01 ≤0.10 %
Sulphate, SO3 (%) <2.5 – 2.8 ≤3 %
MgO 1.00 % ≤4.0 %
C3A 1-2 ≤ 3.0
C4AF + 2 C3A 18 – 20 ≤ 20%
PHYSICAL
Expansion (mm) <5 max. 10
Initial setting time (min.) 180–200 min. 60
MECHANICAL
2 days compressive strength (MPa) 20–22 min. 10.0
28 days compressive strength (MPa) 48 – 50 min. 42.5