Type III/B 42,5 N LH/SR - Tipo III/B 42,5 N LH/SR - Buzzi Unicem Italia

Type III/B 42,5 N LH/SR

The percentages indicated do not include additions of calcium sulfate and additives.
Known for its controlled early strength development, and thanks to the aluminate content in the clinker, this cement offers high/very high resistance to sulfates and a controlled development of the heat of hydration (additional LH designation). This cement conforms to the harmonized European standard EN 197/1 and displays the EC marking as required by European regulation 305/2011 (CPR).

The SR designation – sulfate resistance – refers to the additional property of the product based on the composition and performance requirements established in tables 2 and 5 of EN 197/1.

CGreen

Product with a lower environmental impact formulated to uphold the principles of sustainability and offer construction solutions that meet the latest environmental standards. The criteria used to define the CGreen line are based on the GWP (Global Warming Potential) indicator, which is included in the Environmental Product Declaration (EPD) to quantify the Carbon Footprint of cement and the entire supply and production chain.
The percentage of recycled content has also been identified for each cement to define the circularity indicator by cement type.

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	<=2,0%	<5,0%
Insoluble residue	EN 196/2	<=1,0%	<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

4000-5000 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

>12,0 MPa

>=10,0 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

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