Granella

Home » Road Solutions » Products » Granella

The product

Granella® is an example of circular economy, whereby scrap is turned into a product.

The steel obtained from ferrous scrap melting in the electric furnace also generates a by-product – the so-called “slag” – whose chemical properties are similar to those of effusive rocks.

The materials obtained from this process have enhanced physical and mechanical characteristics compared to high grade aggregates from effusive origin such as basalt, diabase and porphyry, which are usually used to prepare high performance special bituminous concrete (highly adhering, sound-absorbing and drainage road surfacing).
The better combination of micro- and macro-roughness increases adherence values in road pavements, thus improving safety.

Furthermore, Granella® offers a two-fold advantage in terms of environmental protection: from the one side, it results from recycling and valorising an industrial by-product that otherwise would be considered as waste; on the other side, it is a valuable replacement to natural raw materials that, in this way, are no longer overexploited. This product is oriented toward an increasingly sustainable use of resources.

Download Products for road paving Catalogue

Certifications

Granella®, which is a product obtained from steel slag produced in the plants of Ferriere
Nord, is certified and bears the CE mark according to 89/106/EEC Directive and the following standards: UNI EN 13043 (aggregates for bituminous concrete), UNI EN 12620 (aggregates for cement concrete) and UNI EN 13042 (Concrete mixtures).

Ferriere Nord’s Granella® has been a registered product REACH N° 01-2119485979-09-0071 since 19/11/2018.

In compliance with the Construction Products Regulation 305/2011/EU, a Factory Production Control is present at Osoppo and Potenza’s plants, operating according to the 2+ system. Since 2004, Granella®’s FPC has been certified by the Slovenian ZAG for the following standards: EN 12620:2002+A1:2008, EN 13043:2002, EN13043:2002/AC:2004, EN 13242:2002+A1:2007. Since 2007, it has been certified also by the Italian body IGQ in compliance with the standard  UNI EN 13043:2002.

Certificate of conformity Granella ZAG – Osoppo
Certificate of conformity Granella ZAG – Potenza
Certificate of conformity Granella IGQ – Osoppo
Certificate of conformity Granella IGQ – Potenza

Voce di Capitolato

Range

ApplicationsTechnical sheets
BITUMINOUS ASPHALT
draining asphalt antiskid
asphaltmacro-roughness
asphaltmultipurpose
asphaltslurry-seal
0 – 4 mmGranella 0 – 4
4 – 8 mm DDLGranella 4 – 8 DDL
8 – 14 mm
Granella 8 – 14
8 – 16 mmGranella 8 – 16
CONCRETE CONGLOMERATESconcrete mixtures
commercial concrete
special heavy concrete
conglomerate
0 – 4 mm
Granella 0 – 4
4 – 8 mm
Granella 4 – 8
8 – 14 mm
Granella 8 – 14
CEMENTED GRAVE
cemented grave
0 – 4 mm
Granella 0 – 4
14 – 32 mm
Granella 14 – 32

Material Characteristics

Inert sizeShape indexFlatness indexLos AngelesP.S.V.
4 – 8 mm
0.29
1.5 – 4.0
14 – 17
> 0.50
8 – 14 mm2.5 – 3.0

Comparison with Natural Effusive Aggregates

MATERIALP.S.V.Los Angeles
Basalt0.42 – 0.4514 – 17
Andesite0.46 – 0.5018 – 20
Diabase0.45 – 0.4915 – 18
Porfyry0.45 – 0.4816 – 20
Granella®> 0.5014 – 17

Sales Organization

A continuous and reliable service is guaranteed by Pittini Group’s Sales Department.
Contact our designated representative: