Breadcrumbs

Type IV/A (V) 42,5 R-SR

This cement contains: 65-89% clinker with a low calcium aluminate content, 11-35% fly ash. A maximum of 5% minor constituents is permitted. The percentages indicated do not include additions 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).

"SR" means that the cement is sulfate-resistant, an additional property of the product in accordance with the composition and performance requirements specified in tables 2 and 5 of EN 197/1.

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 <0,08% <=0,10%
Pozzolanic activity test (8 days) EN 196/5 positive positive
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 4000-5500 cm2/g  
Initial setting time EN 196/3 >100 min >=60 min
Volume stability EN 196/3 <=10 mm <=10 mm
ompressive strength after curing for EN 196/1    
2 days   >24,0 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

  • Reinforced concrete for in-ground and above-ground works requiring good early and final strengths
  • Concrete for foundations and any works in aggressive environments
  • Wet-process sprayed concrete for lining tunnels
  • Concrete in contact with seawater
  • Sewage works
  • Concrete for road and rail works

Documents

Production and distribution structure

Fanna
Via Pradis, 2
33092 Fanna (PN)
phone 800 2252756

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Environmental certification ISO 14001 Environmental certification ISO 14001