Type I 52,5 R

This cement contains at least 95% clinker and up to 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) UNI EN 196/2 <3,7% <=4,0%
Chlorides (Cl - ) UNI EN 196/2 <0,08% <=0,10%
Loss on ignition UNI EN 196/2 <5,0% <=5,0%
Insoluble residue UNI EN 196/2 <1,0% <=5,0%
Water-soluble chromium VI UNI EN 196/10 <=2 ppm <=2 ppm

Physical/mechanical properties

Parameter Test method Indicative values (1) Specified characteristic limits
Blaine specific surface area EN 196/6 4000-5500 cm2/g  
Initial setting time EN 196/3 >90 min >=45 min
Volume stability EN 196/3 <=10 mm <=10 mm
Flow test UNI 7044 >70%  
Compressive strength after curing for EN 196/1    
2 days   >35,0 MPa >=30,0 MPa
28 days   >56,0 MPa >=52,5 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 strength
  • Concrete for prefabricated and/or prestressed structures, including with pre-tensioned tendons
  • Concrete for works requiring formwork removal shortly after pouring
  • Concrete for precast elements with or without accelerated curing


Production and distribution structure

Bulk Bulk
Bag Bag
Big Bag Big Bag
Available in bag Available in bag [produced in other factory]
Export Export
Environmental certification ISO 14001 Environmental certification ISO 14001