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.
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.
|BITUMINOUS ASPHALT||draining asphalt antiskid|
|0 – 4 mm||Granella 0 – 4|
|4 – 8 mm DDL||Granella 4 – 8 DDL|
|8 – 14 mm HD||Granella 8 – 14 HD|
|8 – 16 mm||Granella 8 – 16|
|CONCRETE CONGLOMERATES||concrete mixtures|
special heavy concrete
|0 – 4 mm CC||Granella 0 – 4 CC|
|4 – 8 mm CC||Granella 4 – 8 CC|
|8 – 14 mm CC||Granella 8 – 14 CC|
|CEMENTED GRAVE||cemented grave||0 – 4 mm MC||Granella 0 – 4 MC|
|Inert size||Shape index||Flatness index||Los Angeles||P.S.V.|
|4 – 8 mm|
|1.5 – 4.0|
14 – 17
|8 – 14 mm||2.5 – 3.0|