Type IV/B (V) 32,5 R LH/SR - Type IV/B (V) 32,5 R LH/SR - Buzzi Unicem Italia

Type IV/B (V) 32,5 R LH/SR

This cement contains: 45-64% clinker with a low calcium aluminate content, 36-55% 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 and controlled development of the heat of hydration (additional LH property), 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	<3,30%	<=3,5%
Chlorides (Cl - )	EN 196/2	<0,07%	<=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	>120 min	>=75 min
Heat of hydration after 41 hours	UNI EN 196/9	<270	<270
Volume stability	EN 196/3	<=10 mm	<=10 mm
Compressive strength after curing for	EN 196/1
2 days		>15,0 MPa	>=10,0 MPa
28 days		>39,0 MPa	>=32,5 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

Concrete for foundations and any works in moderately aggressive environments
Concrete for works requiring massive pours (dams, barriers, etc.) requiring a moderate increase in temperature
Concrete in contact with seawater
Sewage works
Soil reinforcement works, ranging from injections to jet-grouting systems