Type III/A 42,5 N LH - Type III/A 42,5 N LH - Buzzi Unicem Italia

Type III/A 42,5 N LH

The percentages indicated do not include additions of calcium sulfate and additives.
Known for its controlled early strength development and controlled development of the heat of hydration (additional LH designation), this 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	<2,8%	<=4,0%
Chlorides (Cl - )	EN 196/2	<0,08%	<=0,10%
Loss on ignition	EN 196/2	<=4,0%	<5,0%
Insoluble residue	EN 196/2	<=2,0%	<5,0%
Heat of hydration	EN 196/8	< 250 j/g	< 270 j/g
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 area

EN 196/6

3500-4500 cm2/g

Initial setting time

EN 196/3

>160 min

>=60 min

Volume stability

EN 196/3

<=10 mm

Compressive strength after curing for

EN 196/1

2 days

>18,0 MPa

>=10,0 MPa

28 days

>50,0 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 high final strength
Concrete for foundations and works in aggressive environments
Concrete in contact with seawater
Concrete for massive pours requiring the controlled development of the heat of hydration
Concrete for road and rail works, including paving
Wet-process sprayed concrete for tunnel linings
Sewage works