Type I 42,5 R

This cement contains at least 95% clinker and up to a maximum of 5% minor constituents, not including the addition of calcium sulfate and additives.

Known for its rapid early strength development, the cement conforms to the harmonized European standard EN 197/1 and displays the CE marking as required by European regulation 305/2011 (CPR).

Chemical properties

Parameter Test method Indicative values (1) Specified characteristic limits
Sulfates (SO3) EN 196/2 <3,7% <=4,0%
Chlorides (Cl - ) EN 196/2 <0,05% <=0,10%
Loss on ignition EN 196/2 <5,0% <=5,0%
Insoluble residue EN 196/2 <1,5% <=5,0%
Water-soluble chromium VI EN 196/10 <=2 ppm <=2 ppm

Physical/mechanical properties

Parameter Test method Indicative values (1) Specified characteristic limits
Blaine specific surface EN 196/6 3000-4200 cm2/g  
Initial setting time EN 196/3 >110 min >=60 min
Volume stability EN 196/3 <=10 mm <=10 mm
Flow test UNI 7044 >80%  
Compressive strength after EN 196/1    
2 days   >26,0 MPa >=20,0 MPa
28 days   >48,0 MPa >=42,5 MPa

(1) The values represent the level above (or below) the reasonably expected median values for the parameters indicated of BUZZI UNICEM cements belonging to the type and class named in the headers. These values are calculated on a yearly basis and take into account internal self-inspection data.

Current applications

  • Standard and non-standard reinforced concrete for works requiring high early and final strengths
  • Concrete for prefabricated and/or prestressed structures
  • Concrete for works requiring formwork removal shortly after pouring
  • Concrete for pouring architectural facades
  • Concrete with good pumpability and workability, also in case of absence of fine particles in the aggregate
  • Concrete poured at a low ambient temperature (5-10°C)


Struttura produttiva e distributiva

Contrada di Megara Giannalena
96011 Augusta (SR)
tel. 800 889005


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