Sulfate-resisting
cement

Cement CEM III/B 32,5N-SR usage


Quality
The quality of cements is su-
pervised by the TSÚS (Build-
ing Testing and Research
Institute), Bratislava.
CEMMAC is a holder of an
ISO 9001: 2008 quality
management certificate
and an ISO 14001: 2004 en-
vironmental management
certificate.
Reduced emmisions CO2
Sulfate-resisting

CEM III/B 32,5 N-SR
Sulfate-resisting cement

Sulfate-resistant cement with a longer workability period, designed for concreting in sulfur-aggressive environments, also suitable for the production of all types of conventional concretes.
It is used particularly for concreting in warm weather and for earth-contact structures.


Characteristics

CEM III/B 32,5 N is characterized by a quite slow increase in early strengths, with 7-day-strengths ranging from 17 to 23 MPa and standard strengths after 28 days ranging from 42 to 50 MPa.


Use

  • deep foundation of constructions (buildings) in contact with aggressive environments
  • foundations and structures in contact with the soil
  • plain concrete and reinforced concrete of low and middle strength classes
  • stabilization layers of roads and motorways
  • concrete filler into permanent shuttering


Advantages

  • its resistance to sulfate aggression predetermines it to concreting in contact with the soil
  • the high fineness of the cement improves the plasticity and pumpability of concrete, facilitates the smoothing of screeds and simplifies the placing of concretes
  • suitable for concreting in warm weather
  • the standard increase in early strengths minimizes the risk of cracks in the structure
  • the longer workability period simplifies the placing of concretes

Essential Properties Harmonized
Standard EN 197-1
CEMMAC
CEM III/B 32,5 N-SR
2-day compressive strength (MPa) 5 – 10
7-day compressive strength (MPa) =>16 17 – 23
28-day compressive strength (MPa) => 32,5 =< 52,5 42 – 50
Initial setting time (min) => 75 250 +- 50
Volume stability Le-Chatelier (mm) =< 10 0,0 – 1,5
SO3 sulphate content (%) =< 4 2,7 +- 0,2
Chloride content (%) =< 0,10 0,05 – 0,03
The content of tricalcium aluminate in this cement is less than 5%.


Increase in strengths CEM III/B 32,5 N-SRCement CEM III/B 32,5NS-R graph