Type II/B-M (S-LL) 42,5 R - Tipo II/B-M (S-LL) 42,5 R - Buzzi Unicem Italia

Type II/B-M (S-LL) 42,5 R

This cement may contain between 65-79% clinker and between 21-35% limestone and slag mixed. 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).

Chemical characteristics

Parameter	Test method	Indicative values ⁽¹⁾	Specified characteristic limits
Sulfates (SO ₃ )	EN 196/2	<3,7%	<=4,0%
Chlorides (Cl -)	EN 196/2	<0,08%	<=0,10%
Water-soluble chromium VI	EN 196/10	<=2 ppm	<=2 ppm

Physical/mechanical characteristics

Parameter	Test method	Indicative values ⁽¹⁾	Specified characteristic limits
Blaine specific surface	EN 196/6	3100-4500 cm2/g
Initial setting time	EN 196/3	>130 min	>=60 min
Volume stability	EN 196/3	<=10 mm	<=10 mm
Flow test	UNI 7044	>80%
Compressive strength after curing for	EN 196/1
2 days		>25,0 MPa	>=20,0 MPa
28 days		>47,0 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 significant early and final strengths
Concrete for prefabricated and/or prestressed structures requiring formwork removal shortly after pouring
Concrete for pouring structural 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).